Kobayashi's sexual affairs

page views:1 Publication date:2023-06-11 10:14:52

In fact, children nowadays begin to understand "sex" at a much, much younger age than imagined. This is all thanks to the openness of sexual attitudes, the development of the internet, and the sharing of information by a vast number of netizens around the world. Whether right or wrong, "sex" has become colorful and almost unrestricted in the world, allowing people to use it almost without any restrictions.
Xiao Lin is seven years old and in the first grade of elementary school. This is the age when he first truly came into contact with "sexual concepts." Xiao Lin's parents and A Cai's parents are good friends and often visit each other. Because A Cai's house is close to the school, Xiao Lin usually goes to A Cai's house to play after school, and then his father or mother picks him up after work.
It was a Monday afternoon. School was in session for half a day, and on the way home from school, A Cai and Xiao Lin were chatting.
"I found a really fun game! Let's play it together when Mom's not around!"
"Why do we have to wait until Aunt Xiuxiu's not around? Can't we play in a little while?"
"No! My dad won't let me touch his computer. If Mom finds out, he'll definitely tell Dad!"
When the two returned to A-Cai's house, A-Cai's mother was just taking three-year-old Xiaomi (A-Cai's younger sister) to Huang's house to play cards. A-Cai's mother and her group of wealthy card-playing friends reportedly took turns playing to avoid one family dominating the game. That day, it was Huang's house's turn. A-Cai's mother was waiting for A-Cai to come home so she could leave!
"Ah Cai, you're back! Mommy's going to Aunt Huang's house for a bit, I'll be back this afternoon to cook dinner. You and Xiao Lin, be good and play at home, don't run around, okay?" After saying this, Cai's mom pinched and rubbed Xiao Lin's cheeks, adding, "Xiao Lin! You have to watch over Ah Cai for Auntie! Auntie will treat you to chocolate when I get back!" Cai's mom loved pinching and squeezing Xiao Lin's cheeks, doing it every time they met. Luckily, Cai's mom's hands were soft and her grip wasn't too strong, so Xiao Lin didn't dislike the contact. If he weren't still unaware of sexuality, he probably would have enjoyed admiring Cai's mom's fair and deep valley up close.
Hearing that Xiao Lin could have chocolate, Ah Cai naturally wouldn't hesitate .
"Mommy! I want chocolate too!"
"Ah Cai, be good, Mommy will buy you some too!" After saying this, Cai's mom waved goodbye to the two of them and left.
Ah Cai gestured for Xiao Lin to follow him, and Xiao Lin curiously followed Ah Cai into his father's study, watching Ah Cai turn on his father's computer. Xiao Lin watched Ah Cai skillfully open several windows, admiring and envying his movements. Being able to use a computer really felt cool. Ah Cai simply clicked on something on the screen, and a video popped up. The video showed a naked woman; upon closer inspection, it was Ah Cai's mother. Xiao Lin couldn't understand what was so fun about watching someone naked. His family always bathed together, and he saw his mother and sister naked every day, so it didn't interest him at all. He complained,
"What's so fun about watching Auntie naked? Let's go play video games!"
"Wait, the fun is coming up." Xiao Lin had to turn his attention back to the screen. The camera panned down as Ah Cai's mother squatted, revealing a man lying naked on the bed, his limp penis dangling from his lower abdomen. Judging from the scene, it seemed the man on the bed was filming. Xiaolin thought this must be Cai's father. Cai's father was lying on the bed, and Cai's mother was kneeling on his lap. Cai's father, with his dark skin and strong build, had a lot of body hair, which made Cai's mother's fair buttocks stand out even more. Cai's mother held his soft penis with one hand and slowly rubbed it up and down. At this moment, Cai interrupted,
"I've tried it! Playing with your penis like my mom does feels really good!" Whether he was afraid Xiaolin wouldn't believe him or he really liked this game, Cai had already taken off his pants and was playing with his penis like Cai's mother, and he kept encouraging Xiaolin to do it too. So Xiaolin also took off his pants, grabbed his penis, and started imitating Cai's mother's movements on the screen. With Cai's mother's movements, Cai's father's originally soft penis slowly grew bigger and harder! Because Xiaolin's own penis sometimes got hard, this didn't scare him. He just didn't expect it to grow so much bigger.
When Cai's father's penis was soft, it was only the size of an adult's thumb, completely disproportionate to his physique. Hidden in the thick pubic hair, it was not noticeable. Unexpectedly, after Cai's mother kneaded it, it gradually grew larger, eventually swelling to the point that when Cai's mother grasped it, the tip of her thumb and the other four fingers could hardly touch. Moreover, its length increased to more than four times its original size. When Cai's mother gripped it with both hands, like holding a baseball bat, half of the glans would sometimes be exposed! There were also obvious blue veins on the surface, making it as thick and robust as Cai's father's appearance! Because of the change in the size of the penis, Cai's mother's movements changed from kneading to pulling up and down. Xiao Lin saw that when Cai's mother pulled down, the foreskin was pulled back, revealing the purplish-red glans. The urethral opening on it was like a mouth, opening and closing with the movement of her hands, and clear liquid would occasionally flow out from it, making Cai's mother's palms and Cai's father's penis wet and shiny.
At this moment, Xiaolin noticed that his penis had also become hard. Looking down, he saw that it was even larger than usual when erect, with about a third of the glans exposed from the foreskin. Looking at Cai's father's glans on the screen, Xiaolin turned to look at Cai beside him and noticed that Cai's glans would also be exposed with the movement of his hand. Seeing this, Xiaolin also wanted his glans to be exposed, so he used more force when pulling down. Although it hurt a little, he persisted, gradually pulling lower and lower. With continuous up-and-down movements, Xiaolin's glans finally completely came out of the foreskin, and his penis became longer, allowing for a wider range of hand movements. Cai said that playing like this would be comfortable, and only now was Xiaolin slowly beginning to understand that feeling. Cai
also noticed that Xiaolin was starting to find enjoyment and said, "It feels good, doesn't it? I told you!"
Cai's mother's movements on the screen continued, when suddenly Cai's father's voice came from the computer.
"Wife, please suck my penis with your mouth!"
Cai Ma immediately adjusted her position and opened her mouth to take the glans in, starting to suck and swallow. For some reason, Xiao Lin suddenly felt hot all over, and really wanted Cai Ma to suck his penis too! Xiao Lin glanced at Cai and saw him sitting on the chair, bending over desperately, trying to get his head closer to his penis. He couldn't help but ask,
"Cai, what are you trying to do?"
"It feels so good to use my hand, of course I want to try if it feels even better to eat it!"
"Can you even eat it?"
"I've been practicing for a few days, and I can already eat a little bit!" After saying that, he lowered his head and tried again. Sure enough, he could lick his glans with his tongue, but he could only kiss the glans at most, and then take half of the glans in his mouth as his limit.
"Ah Cai, Auntie ate the whole thing, you only got half the head!"
"What 'head'? That's called the glans! That's what adults call it!" Ah Cai licked the glans and said, "Glans, a turtle's head? It looks quite like one!"
"I can't help it, I'm already bent all the way! That's all I can do." "
Or you can ask Auntie to play with you, let her eat it for you!"
"Ask my mom to eat it for me? She'll know I'm secretly playing on my dad's computer!"
"If my dad finds out I'm playing on his computer, I'm doomed!" Ah Cai spat out the glans in fright. "Do you know what game my parents are playing?"
Xiao Lin shook her head, and Ah Cai, as if he knew the most, explained to Xiao Lin.
"This is what adults call sex, and you can have a baby after you finish!"
"Eating a penis will make you have a baby? Will you have a baby if you eat it yourself?" Xiao Lin was a little surprised.
"Eating a penis is just warm-up exercises; you have to finish the whole game to have a baby!"
"And it only works when a boy and a girl play together!" Ah Cai explained with a hint of pride. "But even if you only get a little bit, it feels really good!" Ah Cai started sucking on himself again. Watching him lick and suck the glans while moving his penis with his hand, it was clear that he was quite skilled at this.
"How about it? Xiao Lin, do you want to try it too?" Ah Cai looked at Xiao Lin with a challenging gaze. Actually, Ah Cai encouraged Xiao Lin to play this game so that he would suck his penis. He really wanted to experience the feeling of being given oral sex like his father did. He had also thought about asking his mother to do it for him, since his mother loved him very much and might agree. However, he was afraid of being discovered messing with his father's computer, which his father strictly forbade! So he set his sights on Xiao Lin. Although it seemed strange for boys to play this kind of game together, Xiao Lin was a handsome young man, and Ah Cai felt that it was acceptable for him to suck his penis or for him to suck Xiao Lin's penis. That's why I shared this game with Xiaolin and suggested he try sucking his own penis. When he couldn't suck it anymore, I would take the initiative to suck his penis, and then ask him to suck it for me! That way he could experience the feeling of being given oral sex!
Xiaolin watched Cai Ma sucking Cai Ba's penis on the screen, and he also had the urge to be sucked. So Xiaolin sat on the edge of the bed, his right hand holding the base of his penis to control the direction, his left hand hooking his thigh, his eyes fixed on the red glans, and bent down. With almost no difficulty, Xiaolin kissed his own glans. He continued downwards, and his glans successfully pushed open his mouth and was swallowed by Xiaolin. Although it was scraped by his teeth, Xiaolin still felt an indescribable pleasure rush from his penis to his head, making him involuntarily swallow it down until it reached his throat.
Although Xiaolin was only seven years old and his penis wasn't very big, whether it was due to innate talent or stimulation from sight and touch, his erect penis was about the thickness of an adult's thumb and the length of a middle finger. Especially the glans, which was like an umbrella, pointed at the top and wide at the bottom—a perfect tool for inducing vomiting. While swallowing, he accidentally triggered a strong urge to gag, and Xiaolin quickly pulled out his penis and vomited into the trash can next to his desk. This sight shocked A-Cai, who was dumbfounded.
"Xiaolin, you're amazing! You actually swallowed the whole thing!" Even more disappointing was that he no longer had an excuse to ask Xiaolin to eat his penis.
After vomiting, Xiaolin looked at the screen and saw that A-Cai's mother had actually swallowed that huge penis whole. Remembering the pleasure of swallowing it, he unconsciously drifted into a daze, thinking that it would be great if A-Cai's mother could eat his penis. Of course, he wouldn't say it aloud.
Seeing Xiaolin's dazed expression, A-Cai couldn't help but ask, "Doesn't it feel good to have your whole penis in your mouth?"
Xiaolin grinned but didn't answer, and A-Cai also grinned foolishly at Xiaolin. At this moment, Cai's mother spat out Cai's father's penis, lay on the bed, and spread her legs.
"Husband! I want it! Hurry up and come in!"
The camera was focused on Cai's mother's lower body. A red fleshy slit could be vaguely seen through the thick pubic hair. The slit was slightly open, and clear vaginal fluid wet the surrounding pubic hair and made the vaginal flesh wet and shiny. Cai's father held the penis and scraped the glans back and forth in the wet slit, making sure the glans was covered with vaginal fluid. After adjusting the angle, the glans seemed to be sucked in and "whoosh" sank into the vaginal opening. Cai's father released his hand holding the penis and thrust his buttocks forward, and the whole penis went in! While Xiaolin was stunned, the big penis went in and out of the vagina again and again. Xiaolin looked at A-Cai questioningly, and A-Cai nodded.
"This is sex!"
"Putting your penis into a girl's hole and thrusting it in and out until it feels good, then you spray all that white stuff inside and she'll give birth!"
Cai Ma shouted, her face flushed. "Ah! Ah! Fuck! Fuck so well! Good husband! Fuck me harder!"
"My wife's hole is so wet and tight today! So good!"
The camera shook violently, sometimes focusing on Cai Ma's flushed face, sometimes on her swaying breasts, and sometimes back to the scene of a penis thrusting into her vagina. Cai Ba's left hand followed the camera, sometimes stroking Cai Ma's face, sometimes putting his fingers in her mouth for her to suck, sometimes kneading her full breasts, and sometimes rubbing her clitoris with his thumb. The positions changed several times: sometimes she was lying on her side with Cai Ba holding one of her legs and fucking her, sometimes she was lying on her stomach and being fucked from behind, and sometimes Cai Ba was lying down and Cai Ma was sitting on him and moving. Cai Ma seemed to like this position very much, shouting loudly and moving the most intensely.
Xiaolin and Acai watched the video while simultaneously stroking their penises. Later, they got excited and wanted to suck on the penises, but still wanted to see the screen. So they lay on the bed with their heads facing the screen upside down, flipping their legs upwards so their penises could slide into their mouths from above. Acai discovered that this position made it easier to suck on his penis; using gravity, he could actually swallow half of it. Xiaolin, who could already swallow the whole thing, didn't feel nauseous like before after mastering the technique, so it wasn't a big problem. However, Xiaolin discovered that he could kneel in front of his mouth in this position, and when he moved his hips like Acai's father did on the screen, his penis would thrust in and out of his mouth like it was penetrating Acai's mother's vagina. It felt really good! The downside was that it blocked the screen, but for that pleasurable feeling, it was worth it.
Acai saw this and copied Xiaolin, but he only thrust halfway in, not as deeply as Xiaolin, but judging from his expression, he was also enjoying it very much. On the screen, after a few violent thrusts, Cai's father pulled his penis out of her vagina. Cai's mother sat up and opened her mouth. Cai's father then rapidly pumped his penis in and out of her mouth, and soon streams of white semen spurted from his glans into her wide-open mouth. Some of the semen that missed its mark landed on the sides of her mouth. After ejaculating, Cai's father used the head of his penis to scrape the misfired semen into Cai's mother's mouth. She immediately took the head of his penis in and sucked hard, cleaning up the remaining semen. Then the video ended.
Meanwhile, Xiaolin and Cai continued to thrust their hips rapidly, pumping their mouths. Xiaolin felt as if something was about to explode, a feeling that urged him to thrust faster and harder. Xiaolin suddenly realized that this must be like Cai's father, his penis about to ejaculate. So Xiaolin thrust his mouth even faster and harder, even swallowing the head of his penis several times. Then Xiaolin felt himself about to ejaculate!
Xiao Lin thrust his hips forward, swallowing the glans and sucking hard. An explosive surge of pleasure erupted, as if he'd been climaxing for a long time. The feeling was incredibly pleasurable, as if all his efforts had been for this final moment.
Xiao Lin pulled out his penis and collapsed onto the bed. He could feel his penis had swelled slightly, but strangely, nothing had ejaculated in his mouth. Lying there to rest, he turned to look at A-Cai, who was already resting nearby. As if knowing Xiao Lin's question, A-Cai said, "Maybe it'll only ejaculate that white stuff when it's bigger?"
They exchanged opinions and agreed that using their hands, sucking, and thrusting the penis into a vagina were definitely the most pleasurable methods!
After that, whenever Xiao Lin had the chance while at A-Cai's house, he would go to his father's study with A-Cai to watch videos. After more than a month of effort, A-Cai was also able to swallow a whole penis, just like Xiao Lin. The pleasure was truly irresistible, so whenever he had time, Xiao Lin would play with his penis.
Thus, the concept of "sexuality" began to enter Xiaolin's mind for the first time.

After watching Cai Ma's videos, Xiaolin's perspective broadened considerably, and his viewpoint when bathing with his family changed. His gaze often drifted towards his family members' private parts. He even discovered that his father would sometimes insert his penis into his mother's vagina when he and his sister weren't paying attention, slowly thrusting in and out of the bathtub. Soon after, Xiaolin's mother would urge the two children to hurry up and finish bathing and leave.
Although this had happened occasionally before, Xiaolin only realized after his first exposure to the concept of "sexuality" that his parents were kicking them out because they wanted to have sex. Because his parents would avoid him when they had sex, he vaguely felt that "sexual matters" were a secret, and he no longer dared to act on his original thoughts of asking his family about it or trying sex.
Time passed quickly, and soon Xiaolin was in third grade. Third graders were reassigned to different classes, and unfortunately, Xiaolin and Acai weren't in the same class. However, this didn't affect their friendship; they still played together often, and Acai would share any new videos with Xiaolin immediately.
One night, Xiaolin was fast asleep in his room when he dreamt that he and Acai were playing a game where he would suck his penis while watching a video. Suddenly, Acai grabbed his penis and started sucking it, waking him up.
Surprisingly, he could still clearly feel the sensation of being sucked on in the dream, even hearing the "sizzling" sound. Looking up, although the light was dim, he could recognize his sister, Xiaotong, giving him oral sex.
Xiaotong was wearing an extra-long pink t-shirt pajama, and as she performed the act, her breasts swayed with her head movements through the drooping neckline. Xiaolin thought his sister looked incredibly beautiful, which excited him greatly.
He couldn't understand why he didn't feel anything special when his sister looked at his naked body every day while showering, but the sight of her exposed body covered by a t-shirt made him feel completely different.
Xiaotong noticed that Xiaolin had woken up, so she quickly spat out his penis and made a shushing gesture.
"Xiaolin, don't make a sound! I'll teach you a really comfortable game!"
"Sis, I know you're giving me oral sex. Cai's mom and dad do it like that too."
"Have you seen Cai's parents doing the same thing?"
"Cai showed me a video. He said that kind of game is called love."
"So, Xiaolin, do you want to have sex with your sister?"
"Of course I do! I've always wanted to know what it feels like to put my penis inside a girl!" Xiaotong climbed on top of Xiaolin, pressed her forehead against his, and shook her head.
"Turns out, my Xiaolin is a little pervert!" After Xiaotong climbed up, her breasts, exposed from her collar, were right in front of Xiaolin, giving him an urge to do something to them. So Xiaolin reached into his sister's collar and grasped one of her breasts, a strange sensation spreading through his palm.
His sister glanced at Xiaolin, smiled slightly, and reached out to grasp Xiaolin's erect penis. Xiaolin also began to knead his sister's breasts. Soon after, Xiaolin felt his sister's nipples harden and enlarge. He hadn't expected that a girl's nipples could enlarge like a boy's penis; it must be because of the pleasure, right?
Xiaotong then turned around, presenting her buttocks to Xiaolin's head, and began to suck on his glans. Only then did Xiaolin realize that his sister wasn't wearing underwear, only that nightgown. Looking at his sister's vulva so close to his eyes! Remembering the 69 position his father had mentioned, Xiaolin reached his hands under his sister's clothes and kneaded her breasts, then stuck out his tongue to lick the fleshy opening in front of him.
Sensing Xiaolin's movements, the older sister ate even more enthusiastically. Then, neither of them spoke, focusing solely on their own actions. Strangely, Xiaolin felt that he and his sister seemed to understand each other's needs through their movements. For example, he could sense from the angle, depth, and speed at which his sister was sucking his penis that she wanted him to insert his tongue into her vagina or lick and suck the clitoris. Similarly, his sister could sense from the way and force with which he licked and sucked that he wanted her to suck deeper, faster, or more forcefully on the glans.
About ten minutes later, Xiaolin ejaculated, but as usual, there was no discharge. Xiaolin asked his sister if he had ejaculated, and she nodded, saying he had come twice.
"And you? Why didn't you ejaculate?"
"Actually, I came once, but I'm not fully grown yet, so I can't ejaculate anything," Xiaolin said, somewhat dejectedly.
"Don't worry, our Xiaolin will grow up quickly!" Suddenly, the older sister sat on Xiaolin's lap, grasping his penis and rubbing it against his wet opening. "Ready to make love with your sister?" The head of his penis slid back and forth on her opening, making Xiaolin extremely excited.
"Yes, sister, I've been wanting it so much!"
The older sister moved her body, and the opening, unable to withstand the pressure, let out a "whoosh" as the head of his penis entered. The older sister shuddered but didn't stop, her hips moving back and forth until Xiaolin's penis was completely inside her. Only then did she stop.
Xiaolin felt his penis completely enveloped in a warm, moist environment. Besides the indescribable comfort, he felt overwhelmingly moved! His sister had inserted her penis into his body! This was real sex! It was indeed incredibly comfortable, causing Xiaolin to groan.
"Oh! Sister..."
The older sister held onto Xiaolin's shoulders and began to thrust her vagina into Xiaolin's penis. Xiaolin couldn't help but move in sync with her movements, his penis pumping in and out of her hot, tight vagina.
It felt so good. They kept moving, and the wooden bed creaked under the strain. As time passed, Xiaolin became more and more excited. He grabbed his sister, rolled over, and pinned her down, thrusting into her from above.
As he thrust, Xiaolin looked down to observe how his penis was inside her. His penis seemed to have grown a little. Xiaolin felt that his sister was helping him grow. He couldn't help but speed up his thrusts. His penis felt increasingly good. Xiaolin hugged his sister tightly, burying his face between her breasts. He felt a surge of heat in his lower abdomen, as if something was about to burst out of him. Xiaolin felt his penis was so swollen and full, as if something was really about to burst out from inside.
The older sister also sensed Xiaolin's change. She tightly embraced him, lifting her legs to hook around his waist. A suction force emanated from her vagina, trembling and igniting the heat within Xiaolin's lower abdomen!
Xiaolin forcefully thrust his penis into his sister, feeling spurts of hot fluid erupt from his glans into her vagina. He was surprised, delighted, and incredibly comfortable—it was unlike any he'd experienced before. Had he really ejaculated?
The older sister also felt Xiaolin's ejaculation. The hot fluid surged deep within her vagina, bringing her pleasure to its peak. Reaching her climax, she trembled and hugged Xiaolin even tighter. They held each other tightly, excitedly awaiting the end of their ejaculation.
A moment later, the older sister opened her eyes. Xiaolin, still holding her, sat up, both staring at their joined bodies. He slowly withdrew his still-erect penis. As the glans withdrew from the opening, a thick liquid gushed out.
Xiaolin ejaculated! Xiaolin really ejaculated! What Xiaolin ejaculated filled his sister's vagina and was now flowing back out continuously. But Xiaolin found it strange because the liquid wasn't white; it was transparent and colorless. His sister scraped some of the transparent liquid Xiaolin ejaculated and put it in her mouth. It tasted a little salty, but it didn't have the fishy smell of semen.
"You can already ejaculate something. Although it's not semen, Xiaolin has grown a bit more!" Xiaotong bent down and used her mouth to clean the liquid sticking to Xiaolin's penis.
"Sister will do her best to help you. Soon what you ejaculate will turn into white semen! Then Xiaolin will be a real adult!"
Xiaolin hugged his sister, moved. "Thank you, sister! It's because of you that I can grow up faster! And you make me feel so good! I love you the most, sister!"
His sister grasped Xiaolin's penis, noticing that it didn't soften, and pulled it closer between her legs.
"Sister wants more. Can we do it again?"
Xiaolin didn't answer, but simply followed his sister's movements and inserted his penis into her vagina, beginning to thrust.
At three o'clock in the morning, Xiaotong returned to her room, satisfied.

Since he could ejaculate clear fluid, Xiaolin's growth rate has accelerated even further! It's almost visible to the naked eye. Three months after having sex with his sister, his mother kept staring at Xiaolin's penis with squinted eyes while taking a bath.
"Dad, don't you think Xiaolin is developing particularly fast lately?" Xiaolin's parents call each other "Dad" and "Mom" like their children do. In fact, many families do this so that their children can call each other "Dad"
and "Mom" quickly when they are young, so they naturally change their way of addressing each other shortly after conception. Xiaolin's father soaked in the bathtub and looked at Xiaolin who was showering. "Yes! Our Xiaolin has really grown taller lately! He's almost as tall as Xiaotong!" Xiaolin, who is about to enter fourth grade, has indeed grown very fast. He is already 155 cm tall. Perhaps it's because he often plays with Ah Cai and has sex with his sister. Xiaolin is not only flexible, but he also has faint muscle lines.
His penis had grown considerably, reaching twelve centimeters in length when erect. Its thickness was somewhat unusual; it was thinner at the base and thicker at the tip, with the glans being pointed at the front and wider at the back. The thickest part of the penis was the tip of the glans, with a diameter of five centimeters. Then came the first two-thirds of the shaft, about four centimeters in diameter, and the rear section, about three centimeters in diameter—already approaching adult size.
"Who's talking about height? You can see that all the time! I'm talking about his little penis!" Xiaolin's mother, supporting Xiaolin's shoulders, turned him to face his father.
Xiaolin's father climbed out of the bathtub, stood in front of Xiaolin, and compared his hairless penis to his own.
"Really! This isn't just a little penis anymore, it's almost as big as mine! I wonder what it'll be like when it's hard?"
Xiaolin's mother was naturally bald, while Xiaolin's father, though not very pubic, still had some hair. However, to be considerate of his wife's feelings, he plucked all his pubic hair, creating an artificial baldness, which Xiaolin's mother adored.
Xiaolin's mother hugged Xiaolin's full breasts from behind, pressing them against his back, and used her right hand to grasp and rub Xiaolin's penis.
"Then let me rub it until it's hard, and then you can compare with him?"
"How long would it take to rub it? I think you should just give him oral sex, that would be faster! It's about time to give Xiaolin some sex education!"
Unexpectedly, Xiaolin got hard immediately because of the pressure from the breasts on his back and the stimulation of his mother playing with his penis for the first time.
"Dad, did you see that? Even my charming son can't resist Mom's charm! It's already rock hard after just a few touches! I don't even need to use my mouth!"
Xiaolin looked at his penis with regret, thinking how useless he was. He got hard after just a few touches from his mother, and now his chance to get oral sex was gone!
No one knows a son better than his mother. Sensing Xiaolin's disappointment, his mother moved in front of him and rubbed his penis.
"It's hard, but I don't know if this is the maximum size. I'll try sucking it a bit more and see if it gets even bigger!" With that, she knelt down, licked Xiaolin's penis twice, and then opened her mouth to take the glans in. Xiaolin trembled with excitement, letting out a satisfied moan. Seeing this, Xiaolin's father chuckled, sat on the edge of the bathtub, rubbed his own penis, and beckoned to Xiaolin's sister beside him.
"Since we're comparing sizes, mine has to get hard first, sister! Come over and give Dad a blowjob, don't lose to Mom!"
Xiaotong obediently squatted down in front of her father, rubbed it a few times, and started eating. Xiaolin's father reacted quickly, and it swelled up in his daughter's mouth in no time. Xiaolin looked at his sister and father, thinking that his sister must have played sex games with his father before, no wonder she was so skilled and knew so much when she played with him.
After eating for a while, Xiaolin's mother found that Xiaolin's penis was really bigger. She tried her best to find out Xiaolin's limit. After about five minutes, she was sure that Xiaolin's penis should be that big, so she spat out his penis and started pumping with her hand.
"Dad, I'm ready here, how about you? Are you ready to compare?"
"I'm hard enough too, sister is ready, let Dad compare with your brother!"
So the mother and daughter stood aside and let Xiaolin and his father stand up and bring their penises close together for the mother to judge.
"Dad's penis is a little bigger, but Xiaolin's shape is a bit special!"
"Oh! Let me see!" Xiaolin's dad sat back on the edge of the bathtub to observe Xiaolin's penis and also noticed its special feature.
"It's true! Look, his glans is like an umbrella. If it's inserted into a woman, it will definitely hook inside and won't accidentally fall out. The shaft is the same. Although it can't hook inside like the glans, it's thinner at the back and thicker at the front. When it's pulled out, it will definitely give the woman a special feeling!"
Hearing her father's explanation, Xiaotong blushed and nodded in agreement. Her mother, seeing Xiaotong's appearance, couldn't help but become suspicious.
"Sister, you seem to agree with what Dad said? You haven't secretly inserted your brother's penis yet, have you?"
Xiaotong blushed even more and nodded in admission. Xiaolin also became shy. He didn't expect his sister to admit it so readily!
Xiaolin's father sat back on the edge of the bathtub and pulled his sister over to sit on his left leg, putting his arm around her shoulder.
"So our sister has already secretly played with her brother's penis! Does it feel just like Daddy said? Actually, Daddy was just inferring from the appearance, but I didn't expect him to guess so accurately!"
"Dad, why don't you say something to him? If your sister secretly has sex with her brother like this, what if she accidentally gets pregnant? That would be a real problem!" Mom squeezed to sit down next to Daddy, took his arm, and complained worriedly.
"No way! Didn't Mom teach me that a girl gets pregnant only when a boy ejaculates inside her? My brother can't ejaculate yet! He won't get pregnant!"
"Xiaolin, is what your sister said true? You're so developed, and you really can't ejaculate?"
"Really! When I played by myself before, I couldn't ejaculate anything. But after I did it with my sister, I could ejaculate something clear. If it weren't for your help, I wouldn't have grown so fast!"
"Something clear? That should be pre-ejaculate fluid. It's usually a fluid secreted during foreplay, used to lubricate during penetration. You're saying that what you ejaculated during orgasm was clear fluid?" Xiaolin's dad, a gynecologist, started analyzing as soon as he got the information.
"Orgasm? What's an orgasm?" Xiaolin asked, and his dad lightly tapped Xiaotong's head.
"You've taught your brother how to have sex, how come you haven't even taught him this most basic thing?" Xiaolin's mom pulled Xiaolin onto her right leg, half-hugging him as she explained.
"Orgasms don't discriminate between men and women. It's when the sexual organs are continuously stimulated, a comfortable feeling lasts until it explodes into an intense, explosive pleasure—that's an orgasm!" Xiaolin was extremely interested in this kind of knowledge, and immediately asked questions whenever she didn't understand something.
"Mom, does the sexual organ refer to the penis?"
"Yes! For men, it refers to the penis, the formal name is 'penis,' but some people also call it 'second brother' or 'meat stick.' For women, the sexual organ is the vulva, commonly known as 'little hole' or 'cunt.' When the male and female sexual organs combine, it's called making love, sexual intercourse, or 'fuck,' and there are also more vulgar terms like 'fucking hole' or 'inserting cunt.'" "
Inserting cunt? That's a fun way to say it!" Xiaolin's dad saw that the mother and son were getting too far off-topic and quickly brought the topic back on track.
"Mom, let's not get sidetracked. We need to figure out what Xiaolin ejaculated first, because sometimes sperm can mix with pre-ejaculate fluid, and if we're not careful, pregnancy can still happen!"
"That's true. Our Xiaolin is developing so fast, his testicles might already be able to produce sperm!"
"Mom, help your little brother ejaculate that clear liquid first. I'll go get a test tube to collect some for testing. Before we get the results, sister, remember not to let your little brother ejaculate inside you, okay?"
"Okay!"
After saying that, Xiaolin's dad left the bathroom to get the test tube, while Xiaolin's mom held Xiaolin's penis and pumped it, smiling as she asked Xiaolin,
"Little brother, how do you want Mom to help you reach orgasm?"
"Mom, I... can I have sex with you?" Xiaolin asked shyly.
"You want to reach orgasm through sex? Sure, but you have to pull out right when you feel like you're about to climax so Daddy can collect your semen!"
Xiaolin's mom had Xiaolin lie on the ground, then straddled him. Hearing Xiaolin's dad describe the advantages of his penis, she was already eager to try it.
After Xiaotong confirmed it, Xiaolin's mom was already dripping with lust and couldn't stop. Grabbing his penis, she slid the glans against the entrance of his vagina a couple of times, aligned it, and gently sat down. With a soft "whoosh," the entire length penetrated, hitting the very core of his vagina. Only when she pulled out did Xiaolin's mom truly experience the benefits of Xiaolin's penis.
Xiaolin's glans was pointed at the front and broad at the back, and very elastic, unlike the shaft which was as hard. When inserted, the pressure from the vagina would cause the glans to close like an umbrella, making the end as thick as the shaft, allowing for a smooth, deep insertion. When withdrawing, the glans would expand like an umbrella opening, scraping the vaginal walls almost without any blind spots. Combined with the shaft being thicker at the front and thinner at the back, pulling back felt like a hot, living thing drilling out of the vagina. This double, continuous pleasure caused Xiaolin's mother to tremble and moan with each withdrawal.
"Ah...oh...oh!" With each thrust and withdrawal of Xiaolin's mother, he couldn't help but let out a similar moan with each pull. The faster the withdrawal, the shorter the moan; the slower the withdrawal, the longer the moan.
After trying a dozen or so thrusts, Xiaolin's mother's moans began to drag on longer and longer, because he discovered that the slower the withdrawal, the stronger the stimulation to the vagina. So, Xiaolin's mother's movements unconsciously changed to a series of rapid thrusts followed by slow withdrawals. After enjoying the benefits of her son, Xiaolin's mother looked at Xiaotong, who was masturbating with her fingers. 　　"Sister 　　, 　　oh 　　oh 　　ah
... 　　"Mom, I told you to help your brother climax, not to climax yourself! Besides, I was only gone for a little while, and you're already climaxing? Isn't that a bit too fast? How am I supposed to help him ejaculate like this? Or should I switch with my sister?" 　　Hearing that her husband wanted to switch, Xiaolin's mother immediately started swaying her hips again, continuing to thrust and withdraw her son's penis. She hadn't had enough yet! Remembering the pleasure her son had just given her, she gave Xiaolin a deep kiss, then grabbed his hands and placed them on her full breasts, indicating that Xiaolin should caress them. Xiaolin cooperated perfectly, kneading them, making Xiaolin's mother moan repeatedly. Xiaolin's father was a little jealous. 　　"Mom, you can enjoy yourself, but don't forget to help your brother ejaculate! Xiaolin, when you're about to ejaculate, remember to tell your mom, don't let her stay on top of you, okay?" 　　"Okay! Okay!" Xiaolin quickly responded to his father's instructions. This was the first time Xiaolin's father had seen his wife so slutty and wanton while being fucked. Recalling his earlier analysis of Xiaolin's penis, he thought to himself that having a good penis was indeed enviable. Suddenly, his penis felt warm, and looking down, he saw that his daughter, Xiaotong, had come over to give him oral sex because she was worried about him. Xiaolin's father was touched and gently stroked Xiaotong's hair. 　　"As expected, my daughter is the most considerate! Come on! Come here and stick your ass up so Daddy can fuck you properly!" Xiaolin's father had Xiaotong hold onto the left side of the washbasin, and he penetrated her from behind. Because the washbasin was next to Xiaolin and his mother's vagina, he could monitor their progress while fucking his daughter's vagina. 　　Xiaotong, half-lying on the washbasin with her buttocks raised high, licked her lips and bit her lower lip, waiting for her father's intrusion. Xiaolin's father first placed the test tubes on the shelf, then, supporting Xiaotong's buttocks with his left hand, used his thumb to spread her buttocks, revealing her alluring vulva. His right hand grasped his penis, pushing it to the entrance. Feeling that his daughter was already incredibly wet, he thrust forward forcefully, "Gurgle!" His large penis plunged all the way in. 　　"Ah...Daddy's...so...big!" As if deliberately seducing her father, Xiaotong turned back, gazing at him with a dazed look, moving her hips in rhythm with his thrusts while panting and moaning, using lewd language to tease him. This excited Xiaolin's father greatly. He gripped his daughter's plump buttocks with both hands, increasing the intensity of his thrusts in sync with her movements. At this moment, Xiaolin's mother unexpectedly reached another climax! 　　"Ah...ahh! Good...son! God...ah! Mom...Mom is...coming again!...How come...ah...ahh, so fast!" This time, after her orgasm, Xiaolin's mother didn't stop to rest, but continued to maintain the thrusting motion. The vaginal fluid gushed out, turning into a thick, white paste that stuck to their juncture due to the constant thrusting. 　　"Mom, you're too fast! It's been less than five minutes since your last orgasm, right? If this continues, your little brother won't ejaculate before you're exhausted, right?" Xiaolin's father couldn't help but say a few words to his wife, and Xiaolin's mother retorted without backing down. 　　"You stinky dad, don't underestimate us women. Soon I'll make our Xiaolin ejaculate for you to see!" For the sake of face, Xiaolin's mother no longer used the method of thrusting hard and pulling slowly to pursue pleasure, but instead used the more stimulating method of thrusting hard and pulling hard, combined with the occasional grinding when it went all the way in and the double trick of forcefully contracting her vagina. She believed that she would soon be able to complete the task of obtaining semen. 　　Xiaotong explained to Xiaolin's father with a groan. 　　"Making love with...brother...um...it's really easy...to...orgasm, but...ah...if Mom...wants to...oh...brother's...things...to...make love...it's probably...difficult..." " 　　Oh, why?" 　　"Because...um...!ah...! Dad...Daddy! I...I...want...ah...ah! It's coming...!...!...!" Xiaotong, exhausted from her orgasm, was too weak to answer. Xiaolin's father quickly grabbed his daughter to prevent her from collapsing. Her vagina twitched in waves, giving him a wonderful feeling. Holding his daughter, he focused his attention on his penis, enjoying the pleasure his daughter's orgasm brought him. 　　Under his mother's intensified attack, Xiaolin felt particularly good and gradually began to enter the orgasm stage. During the thrusting, his mother felt her vagina swell, and Xiaolin's penis grew even larger. His mother's vagina tingled, and she almost had another orgasm. 　　Mom gritted her teeth and endured it, continuing her thrusting motion. Unexpectedly, this time she sat down hard and the insertion depth was much deeper than before. The glans, which was already pressing against the cervix, bent forward elastically when Mom sat down like this, and the pointed glans suddenly opened the cervix and entered the uterus, hitting the uterine wall head-on.

Xiaolin's mother was dizzy from the impact and let out a soft "uh." Unconsciously, she continued her forceful thrusting and pulling motions. As usual, the glans penis opened as it was pulled out, hooking inside the cervix. After a few more thrusts, Xiaolin's mother had to stop. She felt as if her heart had almost been pulled out and then pushed back in with each thrust—it was a kind of pain, but even more so, an unprecedented pleasure, a mixture of fear and a desire to experience more.
Xiaolin's mother dared not thrust and pull any further. Lost in passion, she inserted her penis to its hilt, then swayed her hips back and forth, rubbing the glans against her uterus. Xiaolin's mother felt an unprecedented orgasm approaching, and Xiaolin alerted his mother at that moment.
"Mom, I feel like I'm about to cum!"
Hearing Xiaolin's words, he quickly pulled out his penis, which was still inserted in his daughter's body, picked up the test tube, removed the stopper, and prepared to collect some of Xiaolin's ejaculated fluid. However, he saw that Xiaolin's mother was still moving her beautiful buttocks incessantly, showing no intention of getting up.
"Mom, it's okay if you want to enjoy it, just get up and let me collect some of your son's ejaculation! Then you can continue!"
In the end, Xiaolin's mother still didn't get up, and couldn't even explain herself. First, she couldn't pull out his penis, and she was afraid of hurting each other if she pulled it out forcefully. Second, Xiaolin's mother couldn't bear to pull it out because she knew she was about to experience an orgasm she had never experienced before.
To avoid her husband laughing at her for being lewd, she could only endure not making any moans and continue to twist her beautiful buttocks to change the angle and position of Xiaolin's penis rubbing in her uterus, thus accelerating the arrival of orgasm.
Xiaotong, exhausted from her orgasm, grabbed her father's hand and explained to her mother with some fatigue.
"Little brother... before the climax... his penis... will get bigger... it... will get stuck inside the uterus... and he can only... pull it out after... he ejaculates..."
"No way, why didn't you say so sooner?"
"It's because Daddy... is so amazing, I... was just about to say something when Daddy... brought me to orgasm, and I... didn't have the strength to say anything..." "
Then we'll just have to wait until he ejaculates, and then dig it out of your mom's hole."
With Xiaolin's mom's efforts, Xiaolin finally reached orgasm, clear liquid gushing out continuously, streams of hot liquid hitting the walls of his mother's uterus, accumulating inside, and quickly submerging Xiaolin's invading glans. Xiaolin's mom also experienced an orgasm completely different from usual. She convulsed and fell onto Xiaolin, moaning "Ugh..." and hot urine gushed out, splashing all over their tightly joined lower bodies. Luckily, this was in the bathroom, otherwise cleaning up afterwards would have been a hassle.
After resting for a while, Xiaotong was less panting. Seeing that her mother had also urinated, she said with a grin, "Hehe, I peed the first time my little brother penetrated my uterus. Luckily, it was in the bathroom that time too!"
"Was it really that good?" Xiaolin's father asked curiously.
"I don't know how to describe it, because it's completely different from a normal orgasm. I peed the first few times, but later I got used to it and could hold it in. However, I always felt dizzy, but it was a very comfortable dizziness, a bit like dreaming of flying."
At this moment, Xiaolin's mother finally came to her senses. Xiaolin's father quickly went over to help her up and made her sit on the edge of the bathtub. He picked up a test tube, brought it to the opening, and then stuck his finger in to probe. Some clear liquid came out, and Xiaolin's father quickly collected it into the test tube.
"I'm sorry, Dad! That was probably just my vaginal fluid. I can feel that what my brother ejaculated is still inside my uterus. Now my cervix is tense and contracting, so the semen is locked inside and can't flow out. This time, the semen collection failed."
Xiaolin's father kissed Xiaolin's mother affectionately and gently carried her into the bathtub.
"It's okay, we underestimated our little brother! We'll help him ejaculate with oral sex after he catches his breath. Mom, you take a bath and rest for a bit. Your sister can help him later." "
How can that be! I didn't do it right just now. Of course, I should do it next time!" Xiaotong, being an experienced mother, knew that her mother actually wanted to experience Xiaolin's special thing a few more times, so she hooked her arm around her father's to make an excuse for her mother.
"Dad, my brother usually takes a long time to climax, and he just came once already. It'll probably take even longer for him to come again! I'm afraid I can't handle it alone. Let Mom and I help him!" Xiaotong said, hugging and shaking her father's arm. Her breasts, slightly smaller than her mother's, made Xiaolin's father's heart pound. Xiaotong took the opportunity to snatch the test tube from her father's hand and pushed him out of the bathroom.
"Dad, you go out and rest. Leave this to Mom and me. We promise to complete the mission!"
Xiaolin's father looked back at the closed bathroom door, shook his head with a wry smile, and went to the study to prepare the equipment, waiting to examine Xiaolin's ejaculation.

"Mom, listen to Dad and rest for a bit. Let me do it with my brother first. After I orgasm, then you can take over with him. Normally, after he ejaculates once, I need to have five orgasms before he ejaculates a second time. So, after we each have two orgasms, we can switch to oral sex. That should make it easier to get his ejaculation. Actually, if Dad hadn't temporarily forbidden me from letting Xiaolin ejaculate inside me, even if he ejaculated inside my uterus, I could easily expel it." "
How is that possible? I've tried using my fingers to dig into my cervix, but it's too tight to insert!"
"That's because it's the first time Mom has let Xiaolin penetrate her uterus. The stimulation is too strong, causing her cervix to tighten and contract too quickly. I've let my brother penetrate my uterus many times, which has not only made my cervix more elastic, but I can also control its opening and closing!"
"Don't lie to Mom! If you could control the opening and closing of your cervix at will, would childbirth be so difficult? When I gave birth to you, I was in labor for over two hours in the delivery room, and my cervix only dilated to one finger's width. I was in labor for over six hours, and it only dilated to five fingers' width before I was able to give birth to you!"
"I don't know either. Anyway, I later discovered that I could control it, and the more my brother was inside my uterus, the easier it was to control." At this moment, Xiaolin, who was sitting on the floor, spoke up for her sister to prove it.
"Really, Mom! Now when I have sex with my sister, it feels like there's a mouth inside her that sucks on my glans, it feels so good!" Xiaolin's words immediately piqued her mother's interest, and she lay in the bathtub and beckoned Xiaotong to come over to her.
"Sister, come here and let Mom see!"
Xiaotong quickly moved closer to the bathtub. Mom reached out and inserted her middle finger into Xiaotong's vagina, touching the cervix deep inside. She gestured for her sister to try moving it. Xiaotong bit her lower lip and exerted force in her lower abdomen. Sure enough, Mom felt the cervix suddenly open, opening and closing as if sucking on her fingertip.
"My God! It really moves! It's amazing! It's like there's a mouth inside the vagina! No wonder your dad has been so keen on having sex with you lately, now I understand!" Xiaolin's mother decided that she should have sex with Xiaolin more often, letting him penetrate her uterus more often. It would not only be pleasurable but also allow her to develop a special skill—a win-win situation. Unfortunately, she needed to obtain a sample first and couldn't let her son penetrate her uterus immediately, but that would be fine once she got the sample.
Thinking of this, she quickly instructed Xiaotong to get started. Xiaotong immediately raised her buttocks, letting Xiaolin penetrate her from behind. This was her favorite position; it allowed for deep penetration and a tight vagina, which could accelerate their orgasms. This time, Xiaotong braced herself on the edge of the bathtub with both hands, sticking her buttocks up to receive Xiaolin's thrusts, with her mother watching right in front of her, which made Xiaotong even more excited.
Xiaolin's mother watched as her son thrust into her daughter's vagina from behind. Although she couldn't see the way his penis was violating her because of her daughter, she still felt extremely excited. Seeing her daughter's half-protruding tongue and half-closed eyes, Xiaolin's mother kissed Xiaotong's lips, their tongues entwining. Soon after, Xiaotong reached orgasm!
"Ah...ah ah...ah, Mom! I...I'm coming...ah...quick! Mom...it's...it's your turn...!"
"No! Good daughter, you continue! Let your brother penetrate you! Mom wants to see your brother fuck your uterus, to see you being shot into your uterus by your brother! Mom will wait until you're done, and after I get what your brother shot out, I'll have sex with him. Sister, cheer up, make your brother come out sooner, let him shoot inside! Don't listen to your father's prohibition, Mom just wants to see you being shot into your uterus by your brother, Mom wants to see you open your cervix and let your brother's stuff flow out from inside, Mom will catch it all for you, not a drop will be wasted!"
The excited Xiaolin's mother couldn't control herself anymore. She climbed out of the bathtub, walked behind Xiaolin and hugged her passionately. Watching her son's penis going in and out of her daughter's vagina, her vagina trembled, and she actually had a small orgasm!
Xiao Tong, who had just climaxed, couldn't withstand Xiao Lin's intense fucking. He collapsed weakly to the edge of the bathtub, his knees buckling. Xiao Lin, who had been kneading Xiao Tong's breasts, quickly wrapped his arms around Xiao Tong's waist to support his lower body, while his penis continued to thrust relentlessly.
Hearing his mother's lewd words, Xiao Lin fucked with extra force, each thrust deeper and harder than the last. Xiao Tong's first climax hadn't even subsided when he experienced another, like a tsunami following another, causing him to moan repeatedly. However, his strength was all used to withstand the impact of the orgasms, leaving him only to groan silently.
Seeing this, Xiao Lin's mother intensified her attack, rubbing her breasts against Xiao Lin's back, her hands constantly caressing his chest, and kissing his lips, sucking on his tongue with deep affection. Xiao Lin hadn't expected his mother to be so lewd, and his lust surged. His penis swelled, penetrating Xiao Tong's uterus. Xiao Tong cried out "Ah!" and climaxed again!
Xiaolin continued thrusting, and Xiaotong cried. During her intense orgasms, the constant scraping of her uterus caused her to feel a flood of sensation, tears streaming down her face. The orgasms seemed endless, and Xiaotong began to tremble uncontrollably. Xiaolin continued to fuck her relentlessly, his powerful thrusts causing the glans, which had been hooked inside her uterus, to repeatedly slide in and out of the cervix. Each insertion penetrated deep into the uterus, reaching the deep walls, and each withdrawal scraped its way out of the uterus all the way to the vaginal opening.
This was the first time Xiaotong had experienced such intense cervical stimulation, and the stimulation caused her to experience repeated orgasms, her whole body trembling with pleasure, tears, snot, and saliva flowing freely. Her eyes were vacant, yet she wore a smile. Xiaolin's mother realized something was wrong; if this continued, her daughter might collapse. She had to end the sexual activity. So, she extended her right middle finger, inserted it into her vagina, which was covered in vaginal fluid, and then thrust the entire finger into Xiaolin's anus.
Xiao Lin cried out, his penis thrusting deep into Xiao Tong's uterus, violently ejaculating his orgasmic fluid, quickly filling and even stretching her uterus. This was the largest ejaculation Xiao Lin had ever made. The fullness of her uterus slowly brought Xiao Tong back to consciousness, and her trembling gradually subsided. Although tears were still flowing, Xiao Lin's mother knew that her sister was alright. Recovering from her peak orgasm, Xiao Tong struggled to turn her head and ask Xiao Lin for a kiss.
"...Kiss...me...brother, I...feel...I really...love...you so much...I...want you...hold me tight...!"
Xiao Lin kissed Xiao Tong, embracing his sister who was slumped over the edge of the bathtub. He carefully moved his body, afraid his penis would slip out of her body. He sat on the edge of the bathtub, letting his sister sit on his lap with her back against him, and they kissed tightly, his penis still erect inside Xiao Tong, locking his orgasmic essence tightly inside her uterus.
Xiao Tong continued to cry, feeling that Xiao Lin's love was tightly locked inside her uterus. The two kissed deeper and embraced tighter. Watching the two kissing, Xiaolin's mother thought the scene was beautiful, and tears welled up in her eyes without her realizing it.
After an unknown amount of time, Xiaolin, afraid his penis would go soft and slip out of his sister's body, would occasionally move his hips, using the uterine wall to stimulate his glans and maintain his erection.
"Mmm...no! Don't...oh...don't move anymore, I...have...enough...!"
"But if I don't move, I'm afraid it will go soft, and then I can't keep it inside you!"
Hearing their conversation, Xiaolin's mother immediately returned to reality and remembered her mission.
"I almost got carried away by this loving atmosphere and forgot to collect Xiaolin's ejaculation!"
Xiaotong blushed upon being reminded and lightly punched Xiaolin with her elbow.
"Ugh! It's all your fault! You made me dizzy!"
Xiaolin innocently rubbed her aching stomach. Xiaolin's mother brought over a test tube and began giving instructions, "Little brother, pull your penis out. First, tighten your cervix so the stuff doesn't spill out!" Xiaolin's mother handed the test tube to Xiaotong.
"Insert the test tube into your vagina, making sure the opening covers your cervix, then open your cervix and let the stuff flow into the test tube."
Xiaotong followed her mother's instructions. Thick, clear liquid could be seen flowing into the test tube protruding from her vagina. It was almost full. Seeing this, Xiaolin's mother took a mouthwash cup and placed it at Xiaotong's vaginal opening to catch the liquid. It was almost full too. Xiaolin's mother quickly lowered her head and sucked the remaining liquid from Xiaotong's vagina.
"Mom, it tastes good, right? I really like the taste of my brother's semen. Can I have the rest?"
Xiaolin's mom licked the liquid from her lips, capped the test tube, and then, still wanting more, licked the remaining liquid off the outside. Seeing her older sister drinking Xiaolin's semen from a mouthwash cup—he was drinking very quickly, downing three-quarters of it in one go—Xiaolin's mom quickly snatched it away.
"Drinking so fast! Mom hasn't had enough yet!" she said, finishing the rest of the semen.
"Ugh! My brother ejaculated a lot this time, I was just about to drink my fill, and Mom took it all away!"
Xiaolin's mom handed the test tube to Xiaotong, then pulled Xiaolin up to help them both rinse off.
"Take this to your dad for testing, and tell him I'm sleeping with my brother tonight, so he shouldn't wait for me."
"Okay, I'll sleep with Dad tonight!" she said, making a face before leaving the bathroom with the test tube.
Due to insufficient equipment at home, Xiaolin's father could only conduct a simple test first. More detailed tests would have to be done at the hospital. After observing with an electron microscope, Xiaolin's father allowed Xiaotong to ejaculate. Since there was no trace of sperm in Xiaolin's ejaculation, it was perfectly safe to ejaculate inside her, and there was no need to worry about pregnancy.
Xiaotong was very happy. He loved the feeling of Xiaolin ejaculating inside his uterus, and he felt uncomfortable if he didn't ejaculate once a day. He also liked drinking that liquid, though he didn't know why, Xiaolin's father said.
"It's basically probably prostatic fluid, but I've never seen such a large amount before. And Xiaolin has been developing particularly fast recently, so he might be producing sperm soon. This could also be sperm-free semen. Dad will take him to the hospital for further examination tomorrow."
"Dad, don't be so serious! My little brother isn't sick, and he's developing so well, it doesn't matter whether we get tested or not!" Xiaotong hugged her father and said coquettishly.
"Actually, I've been developing very well lately too! Although I'm not as good as Mom yet, my figure is recognized as the best in the whole school!"
"That's true! Our little beauty is only twelve years old, but she looks like a high school girl when she walks outside! Many high school girls don't even have breasts as big as yours! She must be a C-cup! Look how well your parents have raised you! Your Aunt Xiuxiu (Ah Cai's mom) keeps asking me what supplements I've been giving you! She doesn't believe me when I say no!"
"Look at you, so smug! Mom said she's sleeping with your brother tonight, how about it? Want her to sleep with you tonight?"
Xiao Lin's dad finished packing up his gear and refrigerated Xiao Lin's fluids.
"You want to sleep with me? Forget it!"
Xiao Tong turned and went back to her room disappointed.
"Oh, then I'll go back to my room to sleep!"
"Let Daddy sleep with my little princess!" Xiao Lin's dad suddenly gave Xiao Tong a princess carry from behind, carrying him all the way to Xiao Tong's room.

After that bathroom incident, the Xiao Lin family was completely unrestricted! Even at home, their attire was like "The Emperor's New Clothes." The first thing everyone did upon returning home was to remove all their clothes, leaving them completely naked, thus saving on air conditioning electricity.
Xiaotong no longer needed to secretly have sex with Xiaolin late at night; whenever she had time, she would pull Xiaolin into the room to have sex, completely unconcerned about whether her parents would find out. Of course, sometimes Xiaotong would also invite her father into the room to show filial piety, avoiding any objections from him.
However, the most outrageous was actually Xiaolin's mother. She would do it anytime, anywhere, whenever the mood struck, regardless of whether Xiaolin's father or Xiaotong was nearby. As soon as she got Xiaolin's penis hard, she would immediately thrust into her vagina and start fucking her. Whether intentionally for the father and daughter to hear, her moans were incredibly loud, often causing Xiaolin's father to also grab Xiaotong and fuck her.
"Mom! You can't keep doing this! I'm your husband! Lately, you seem to only be fucking my brother, and I'm getting jealous!"
Xiaolin's mom lay on the sofa, enduring Xiaolin's fucking, and slapped Xiaolin's dad's buttocks as he was penetrating their daughter.
"We're an old married couple, why are you jealous of your own son? I've been telling you to get a tubal ligation for ages, but you wouldn't. You know I love being inside you, don't you? What if I get pregnant with you? Xiaolin is so much better, you don't have to worry about getting pregnant!"
Xiaolin's dad pulled his daughter closer to his mother, kneading one of their breasts with each hand.
"That's only now. When Xiaolin grows up a bit more, his semen will contain sperm! Seeing how well he's developing, his sperm must be very vigorous. He'll definitely hit the target every time. If you and your sister continue like this, I can't afford to raise a mother and daughter if they both get pregnant!"
"Oh! My son's inside my uterus! Daddy, my son's about to ejaculate, oh! It's getting so big… ahh… come on!… shoot it inside! Oh oh… Mommy's coming too, ah… it's so hot… Daddy, your son… is killing me…!"
Xiaolin's father shook his head, noticing his sister looking at her mother with envy, and seriously considered getting a tubal ligation. He then focused on fucking Xiaotong a few times before pulling out his penis, spraying all his semen onto his daughter's breasts and lower abdomen.
Xiaotong spread the semen all over her body with her hands, evenly applying it to her neck and face. After licking the semen off her hands, she cleaned Xiaolin's father's penis with her mouth.
"Mom was just kidding. Actually, it feels good to have Dad ejaculate on me! It can even replace lotion to moisturize my skin. I really like it!"
"My daughter is so thoughtful!" She hugged Xiaotong and kissed him, completely unconcerned that he was covered in her semen. She kept sucking on his lips and tongue, licking the mixture in his mouth.
The days passed in this lewd manner. Xiaolin soon turned eleven and entered fifth grade. After school, he no longer went to Acai's house, but went to tutoring classes like his older sister, so he had even fewer opportunities to play with Acai!
Also, perhaps because he was really stimulated, Xiaolin's father really did get a vasectomy. From then on, he no longer needed to calculate the safe period and ejaculated inside the mother and son without any restraint.
One day, Xiaolin's mother ran into Acai's mother when she went to pick Xiaolin up from tutoring class. As soon as Acai's mother saw Xiaolin, she habitually played with his cheeks.
"Xiaolin, it's been so long since you've come to Auntie's! Auntie misses you so much! Ah Cai also talks about you a lot. Come visit Auntie's more often, okay?"
"Xiaolin is almost in sixth grade, and he'll be in middle school soon. To help him gradually get used to the academic pressure of middle school, we've enrolled him in tutoring classes."
"Parents are all the same. I remember your Xiaotong started tutoring even earlier, right?"
"Yes, because we started English classes in third grade, and we were worried that Xiaotong wouldn't be able to keep up, so we started him in tutoring classes in second grade. If we hadn't been short on funds when Xiaolin was in second grade, I would have let him go too!"
"By the way! Xiaolin has grown so fast lately! He's taller than most middle school students. If you weren't here, I wouldn't have recognized him! How did you raise him? He's so much taller than our Ah Cai!" Xiaolin's mother blushed slightly.
"I haven't done anything special! I've just been exercising more lately and eating more, that's about it!"
Actually, according to Xiaolin's dad's analysis, besides those two points, it's more likely caused by the mutual absorption and stimulation of sex hormones. Of course, Xiaolin's mom was too embarrassed to tell Acai's mom this!
When Xiaolin's dad was analyzing, the whole Xiaolin family was there, so Xiaolin naturally heard it. Although he was a little confused as to why his mother hadn't said anything, he didn't care.
The sharp-eyed Acai's mom noticed that Xiaolin seemed to know something, so she decided to ask him privately. After chatting with Xiaolin's mom for a few minutes, she said goodbye to Xiaolin and his mother. Before leaving, she invited Xiaolin to come to her house on the weekend. Xiaolin was also a little curious to see if there were any new videos, so he agreed.

On Saturday afternoon, Xiaolin arrived at Acai's house and, as usual, was greeted by Acai's mom's face-rubbing attack. Perhaps because she was at home, Acai's mom was dressed casually, wearing a beige sleeveless dress. Her high, firm breasts were clearly visible from the neckline, swaying with her movements, revealing her entire breasts.
Xiaolin didn't see any bra, but there was a flesh-colored fabric clinging to his breasts, covering the lower half of his nipples, pulling his breasts together to form a deep cleavage. Especially when Ah Cai's mother pinched his cheeks and pulled him close, Xiaolin really wanted to reach out and knead them!
Xiaolin entered the room, and Ah Cai's mother pulled him to the living room sofa and made him sit beside her.
"Xiaolin, Auntie wants to ask you, you've been developing so fast lately. Besides the exercise and eating more that your mother said, is there any other reason?... You know, our Ah Cai is the same age as you, but although he's grown a little taller recently, he doesn't seem to gain weight no matter how much he eats. He's nothing like you! Auntie is very worried about Ah Cai. I know your mother didn't tell you everything the other day. Can you help Auntie and tell her what happened?"
Ah Cai's mother anxiously held Xiaolin's hands, which made Xiaolin feel very sorry for her, so he told her his father's analysis.
"I heard Dad say that my recent rapid development might be due to some kind of hormone exchange and absorption, like the balance of yin and yang, plus exercise and eating more, right?" Ah Cai's mom was a little confused.
"What does 'balance of yin and yang' mean?"
"I didn't understand at the time, so I asked my dad. He said simply put, it might be because I have sex often."
Ah Cai's mom blushed upon hearing this, but fearing her child might have misunderstood, she pulled Xiao Lin a little closer, looked him in the eyes, and asked,
"You mean sex...?"
"Yes!"
"Do you know what sex is?"
"Mom said that sex is also called intercourse, commonly known as fucking, which is when a man inserts his penis into a woman's vagina and thrusts until he ejaculates."
Ah Cai's mother was increasingly surprised as she listened, her face growing redder and redder. This Xiao Lin knew so much about it! Wasn't what Yi Fang (Xiao Lin's mother) taught her too explicit? Xiao Lin was only eleven years old, wasn't he? Was it too early for him to learn this?
"Aunt Xiu Xiu, what's wrong? Did I say something wrong? But I remember Mom telling me that!"
Ah Cai's mother suddenly came to her senses, remembering that Xiao Lin had said "frequent sex." This… she had to figure it out!
"Xiaolin, you just said... your dad said it's because... you have sex so often..." Xiaolin nodded. "So, you... have sex often?" "Yeah! Every day! I used to get tired quickly, but now I don't get tired at all, and I've even built muscles! Look, I have six-pack abs!" Xiaolin rarely had a chance to show off, so he answered happily, even lifting his shirt to show his chest and abdomen to Ah Cai's mother. Ah Cai's mother covered her mouth, looking at Xiaolin's bare chest and abdomen. Although not as exaggerated as a muscular man's, the lines were really there, especially the muscles in his lower abdomen and sides. So what Xiaolin said was probably true.
Then... who did he... have sex with? Junxiong's (Xiaolin's father) hospital nurse? Very likely... he wouldn't let his son go to a prostitute, would he?
"Xiaolin is really strong! I didn't know that just having sex every day could make you grow so fast! ...So, who does Xiaolin have sex with?"
"At first, I did it myself, just like Acai, and then..." Acai's mother interrupted Xiaolin as soon as she heard that her son was being mentioned.
"Do it yourself like Acai? How do you do it yourself?"
"Oh, I mean, I use my hands and mouth to masturbate my own genitals!"
Acai's mother could understand using her hands, but using her mouth...did she mean giving herself oral sex?
"Xiaolin, you said using your mouth, you mean..."
"I mean giving myself oral sex!"
"Does Acai do that too?"
"Yeah, he taught me!"
"How often does Acai do it? Does he have sex?"
"I don't know recently. He said he does it four or five times a day before, but sex...I don't think so, otherwise he would have grown as fast as me!"
She never expected her son to masturbate so many times a day! No wonder he's so thin and weak. Thinking of this, Ah Cai's mother felt a pang of sadness and couldn't help but cry. Xiao Lin was at a loss, trying to comfort her. He gently stroked her back.
"Aunt Xiu Xiu, why are you crying? Don't cry!"
"Ah... Ah Cai... he masturbates so many times a day, I'm worried... if he keeps wasting his energy like this, he won't grow up, I think he'll even stunt his development! Look how thin he is now... and he's always listless..."
"Don't worry, Aunt Xiu Xiu, my dad said that doing too much masturbation isn't good. Tell Ah Cai to stop masturbating. As long as you have sex with him every day, Ah Cai will soon be as strong as me!"
Xiao Lin's sincere suggestion left Ah Cai's mother speechless. Had she heard correctly? Xiao Lin wanted her to have sex with Ah Cai? With her own son? Every day? "
Really! Dad said the reason I'm growing so fast is because I have sex so often, and I ejaculate inside my sister and mom so frequently. This allows me to absorb and exchange hormones, maintaining a balance of yin and yang in my body, which helps me absorb nutrients better and develop quickly and well!"
This was another bombshell. Ah-Cai's mom swallowed hard. "Xiao-Lin, you have sex with your… mom… sister?"
"Yeah, my mom loves it with me. My sister likes it too, but she can't compete with my mom, so I have sex with my mom every day, but my sister doesn't necessarily have it every day."
"But… but isn't that… incest?"
"Incest? What's that?" Xiao-Lin asked疑惑地问道,
"If you have sex with your mom and sister, and you have a child, the generations will be messed up, it'll be against ethics, in short, incest."
"No way! I can't ejaculate yet! So I can't have children!"
"This… isn't just for that reason… how should I put it… oh! You can't ejaculate yet? Then what you just said…"
"I ejaculate a clear substance. Dad checked it, and there were no sperm in it. He said the basic components are the same as semen, but it's rich in male hormones and stimulates women to produce more estrogen. He said if you eat more of it, you won't have to worry about menopause anymore. I didn't quite understand what Dad said after that. Mom heard this and had sex with me more often. But it's more troublesome for her to eat what I ejaculate because Mom always has to let me insert it into her uterus to ejaculate, and then open her cervix to let the substance flow out so she can eat it."
"You can insert it into the uterus?"
"Yes! Because my glans is more pointed, and my penis gets longer before I ejaculate, then I can insert it!"
Ah Cai's mother was restless. She didn't expect that asking about a growth secret would lead to such shocking news. Xiao Lin was having incest with his mother and sister, and his father not only didn't object but also helped test Xiao Lin's ejaculate?

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