My sister's classmate came to stay overnight.

When Ma Wenjun was in his third year of junior high school, his father, an assistant manager at an insurance company, developed feelings for a female colleague and abandoned his family to live with her. He rarely came home, leading to his parents' divorce. His

mother worked in a factory, earning a meager salary to support Wenjun and his older sister Jiajie, who was three years older than him. The two siblings had a very close relationship since childhood and were always considerate of their family.

After graduating from high school, Jiajie achieved good results in the college entrance examination and, to ease her mother's burden, chose to attend a publicly funded normal university. Wenjun believed that as the only boy in the family, he should shoulder the burden of supporting his family. Therefore, after graduating from junior high school, he chose to work part-time while studying, living a life of working during the day and attending night school in the evening. Although it was more tiring, Wenjun felt it was worthwhile to reduce his mother's burden. After

three years of working part-time while studying, Wenjun finally graduated from high school. He was also admitted to the same school as his sister, majoring in biology. To reduce expenses, the two siblings rented a suite together. The sister slept on the bed, and the brother slept on a mattress on the floor.

The two siblings had a very good relationship since childhood, so when Jiajie changed clothes, she didn't mind that her brother was in the room. She would just tell Wenjun to turn his head away because she needed to change, and then she would take off and change her clothes directly.

One time, Jiajie saw Wenjun listening to music with his eyes closed, so she took off her coat and skirt. Wenjun happened to turn around and open his eyes, and saw that Jiajie was only wearing a white bra and white panties. Her breasts and genitals were full and she looked very beautiful. His penis got hard.

Jiajie also saw his bulging pants, but she was not angry. She smiled and said to Wenjun, "Wenjun, you were peeping at your older sister changing clothes!"

Wenjun quickly explained, "No, no," and immediately turned his head away.

Seeing Wenjun's bewildered expression, Jiajie quickly changed her clothes and said to him, "It's okay, I was just kidding. I'm your older sister, we've always been like this. By the way, Wenjun, what do you think of my figure?"

"Sis, I think you're the most beautiful goddess in my heart."

"Don't try to sweet-talk me. You shouldn't stay cooped up in your room all day. Go out and make some friends. You're old enough to have a girlfriend. We have a new female student in our Chinese department, she's very elegant, has a great temper, and is quite pretty. I'll introduce you two sometime."

"Sister, dating costs money. I'm still young, let's talk about it later."

The 11th day of the 8th lunar month was Jiajie's birthday. Jiajie bought some side dishes and two bottles of rosé wine and invited her best friend, Zhizhi, to her room to celebrate. Zhizhi's boyfriend couldn't come because he had to go on a business trip to Japan.

The three chatted and drank happily, and before they knew it, the two bottles of rosé wine were finished. Jiajie checked the time; it was already 12:30. She asked Zhizhi to stay and sleep in the bed with her. Zhizhi was very familiar with the two siblings and was a little drunk, so for safety reasons, she agreed.

Around 5 a.m., Zhizhi got up to get a drink of water because she was thirsty. The nightlight was on in the room. Zhizhi carefully moved her feet, afraid of stepping on Wenjun. Her eyes were on the floor, and she saw that Wenjun's shorts were bulging. Zhizhi stepped over Wenjun's body, went to the refrigerator, found a bottle of mineral water, and took a few sips. Just then, Wenjun touched his penis a few times, which made Zhizhi swallow hard.

Zhizhi had already had sex with her boyfriend. Out of curiosity, she quietly walked up to Wenjun and squatted down. Seeing that Wenjun was sleeping so soundly, she reached out her small hand and gently touched the erect penis that was bulging in Wenjun's shorts.

"Wow, it's thicker and bigger than my boyfriend's," Zhizhi thought to herself.

Seeing Wenjun fast asleep, Zhizhi slowly unzipped his shirt and pulled his penis out of the front opening of his underwear. She then gently grasped it with her small hand and stroked it up and down.

Stimulated, Wenjun opened his eyes and saw Zhizhi's small hand stroking his penis, which felt incredibly pleasurable. He also reached inside Zhizhi's nightgown, feeling her slightly damp underwear, and stroked her vaginal opening with his fingers. Zhizhi turned around and kissed Wenjun, their hands touching each other's genitals.

Stimulated, Zhizhi naturally made "mmm...mmm..." sounds.

Jiajie woke up at the sound and saw her best friend and her younger brother caressing each other. Jiajie watched silently with narrowed eyes, her hand unconsciously reaching under the blanket to caress her inner thigh.

Zhizhi gently licked Wenjun's nipple with her tongue. The nipple hardened, and Zhizhi slowly licked down to Wenjun's erect penis. Her tongue licked the glans, and then she took it into her mouth, slowly sucking it up. After swallowing and releasing it about ten times, her tongue circled around the glans.

Wenjun couldn't resist this teasing. It was his first time giving oral sex and his first time touching a woman's genitals. His penis remained erect, and some fluid leaked from his urethra. Wenjun slipped his fingers inside Zhizhi's pink panties, sliding them up and down her vagina until he touched her clitoris. Zhizhi's body trembled slightly. Wenjun gently rubbed it, and instantly, Zhizhi's vagina secreted vaginal fluid, wetting both of her labia.

Zhizhi hummed softly, "Mmm...mmm...mmm...mmm...mmm."

After about seven or eight minutes of swallowing and spitting, Wenjun's glans swelled even more, and his penis became even harder. Zhizhi knew he was about to ejaculate, so she sped up her swallowing and spitting, sucking from the base of his penis to the glans with each thrust. Wenjun felt a tingling sensation down his spine and ejaculated his virgin semen into Zhizhi's mouth. Zhizhi also sucked and spit out the glans while holding it in her mouth. When Wenjun stopped ejaculating, her small mouth left his penis and she swallowed the thick semen.

"Sister Zhi, I'm sorry, this is my first time ejaculating. It felt so good, I couldn't control myself and it came into your mouth."

"Wenjun, is that true? You're so innocent. You've only ejaculated for the first time in your life. Haven't you ever masturbated?"

"Sister Zhi, I really have never masturbated. I worked part-time while studying in high school, and I was exhausted every day. Whenever I had time, I would sleep a little to catch up on sleep. Today is also the first time I've touched a woman's body. Thank you so much."

"Wenjun, I want you to experience what it's like to have sex with a woman today."

"Sister Zhi, I'm already satisfied that you let me touch you. Besides, you have a boyfriend. Isn't this inappropriate?"

"Wenjun, don't be so conservative and rigid. It's okay, I'm not a virgin anymore. Let your penis feel the pleasurable sensation inside a woman's hole. As long as we don't tell, my boyfriend won't know. You touched me and it felt itchy down there, I need you to relieve that itch."

Zhizhi kissed Wenjun's lips. Wenjun smelled the fishy scent of his own semen. Zhizhi also grasped Wenjun's glans with her small hand, squeezing and stroking it up and down. His soft penis slowly hardened. Wenjun also placed his palms on Zhizhi's breasts and nipples, gently rubbing them.

Zhizhi hummed softly again, "Mmm...mmm...mmm...mmm...mmm." Zhizhi straightened up and took off her nightgown, leaving only a pink bra and silk transparent panties. Then she pulled Wenjun's hand to her clitoris and gently rubbed it.

"Wenjun, that protruding little thing is the clitoris, which is a woman's most sensitive spot. Gently rub around it."

Wenjun's fingers pressed against her clitoris through her panties, slowly rubbing it. The silk panties were so soft, and she thought to herself, "It feels quite comfortable to touch like this." Wenjun's fingers slid down to her vagina, moving up and down, and soon Zhizhi's panties were wet.

Zhizhi took off Wenjun's shorts and panties, and her five fingers grasped his erect penis, moving it up and down. Sometimes her palms caressed Wenjun's testicles, making his penis even harder, thicker, and more erect.

"Mmm...mmm...Wenjun, take off my pants and insert your penis into my vagina."

Wenjun removed Zhizhi's bra and panties. Zhizhi spread her legs, and Wenjun knelt between them, looking at her dark red labia with a small opening in the middle. He grabbed the head of his penis and rubbed it against her clitoris, and vaginal fluid flowed out.

"Mmm...Wenjun, I'm so itchy, mmm...hurry up and put it in...mmm...mmm..."

Wenjun grasped his penis, aimed it at the vaginal opening, and thrust his hips forward, inserting his entire penis into the warm little hole. Wenjun lay down, his hips swaying up and down, thrusting into Zhizhi's tight little hole.

"Oh...so comfortable...Wenjun...you're inserting...I feel so good...just like that...insert...it feels so good."

"Sister Zhi, I feel so good too, my whole penis is wrapped in your vagina, it feels so good."

Jiajie, on the bed, saw the two of them intertwined, her own brother's buttocks swaying up and down, having sex with her classmate. Seeing this live sex show, her panties were also wet, and her fingers were also inserted into her panties, rubbing her clitoris. Her eyes and mouth were tightly closed, her upper lip biting her lower lip, not daring to make a sound.

"Oh, Wenjun...you're filling me up so much...mmm...just like that...thrust harder...oh...mmm...mmm...oh...so good..."

Wenjun propped himself up with his hands, looking towards Jiajie. His sister's blanket was shaking, revealing her toes, which were stiffly stretched out. Wenjun knew that Jiajie must have seen what they were doing and couldn't stand it, so she was masturbating. Wenjun thrust hard into Zhizhi's vagina, inserting his entire penis.

"Oh... Wenjun... you're hitting my uterus... oh... it feels so numb... so good... oh... you're hitting it again... just like that... I'm... about to come... oh... oh..."

"Oh... Wenjun... faster... oh... you're fucking me... even better than my... boyfriend... oh... don't stop... oh... oh... faster... oh... I'm... about to come... oh..."

Zhizhi used all her strength to hug Wenjun tightly, her fingers pinching his back. Wenjun continued to thrust, and gushes of vaginal fluid sprayed onto Wenjun's glans. Because Zhizhi had helped him ejaculate once before, Wenjun showed no signs of ejaculating.

Wenjun continued thrusting, and Zhizhi felt a ticklish sensation in her lower body again. She hooked her legs around Wenjun's buttocks, her mouth slightly open, enjoying the pleasure of lovemaking, unconsciously moaning softly, "Mmm...mmm...mmm...oh...oh...oh..." Each thrust from Wenjun was heavy, reaching Zhizhi's cervix, making her whole body tingle, her juices flowing freely, even her buttocks were wet. Wenjun continued to thrust rapidly into Zhizhi's vagina, the room filled with rhythmic "sizzling" and "peeping" sounds.

"Wen Jun...you...are so good at it...it feels so good...I...am...coming again."

"Sister Zhi, your hole is so tight around my cock, it feels so good too."

"Wen Jun...thrust harder...I really...am...coming...you're so strong...oh..."

"Oh...my...uterus...is about to be...broken...oh...it feels so good...oh..."

"Oh...oh...coming...I'm going to die...oh...oh...harder...oh...it's coming...hmm."

Zhi Zhi hugged Wen Jun tightly with both hands, her body convulsing and trembling. Wen Jun felt like a tap wasn't turned off properly inside Zhi Zhi's hole, water dripping onto his glans, her vagina contracting and clenching, it felt so good.

Wenjun's penis continued to thrust in and out. After about two or three minutes, Zhizhi was brought back to her senses by the penetration.

"Mmm...mmm...oh...oh...Wenjun...I can't take it anymore...it feels so good.

" "Mmm...oh...oh...you're better at it than my...boyfriend...it feels so good...oh...oh...oh."

Jiajie's fingers on the bed moved faster and faster, and the blanket shook more. While Wenjun was penetrating Zhizhi, he watched his sister masturbate. His penis became even harder. He put Zhizhi's legs on his shoulders and with each rapid thrust, he pulled out, pulling the glans to the vaginal opening and then thrusting it in deeply, making Zhizhi's moans louder and louder.

Suddenly, Jiajie cried out "Ah!" Wenjun and Zhizhi saw Jiajie's legs straighten and her body convulse. Jiajie had reached orgasm.

"Jiajie... your brother... feels so good inside me... it's your turn... let him do it... see... it feels so good."

"I'm sorry, seeing you two having sex made me unconsciously touch myself, did I disturb you? I can't do it with my brother, that's incest, and besides, I want to give my virginity to my husband," Jiajie said shyly, opening her eyes.

"Jiajie...you're really...conservative...as long as...you don't get pregnant...and have...children...it's fine."

"Wenjun...you're so good at it...oh...oh...oh...just like that...deeper...it feels so good...oh...oh..."

"Oh...Wenjun...fuck...faster...I...am...coming...again...faster...oh...oh..."

Wenjun thrust rapidly, and suddenly, Zhizhi cried out "oh...oh...oh...ah..." and a large amount of vaginal fluid gushed into Wenjun's glans again, and Zhizhi had another orgasm.

After the vaginal fluid had finished gushing out, Zhizhi thought about dragging Jiajie down with her, and her vagina was a little red and swollen from Wenjun's penetration, so she said to Wenjun, "Go help your sister, let her experience the pleasure of sex."

"Sister Zhi, I dare not."

"Wenjun, my lower body hurts a little. Then get up, and I'll blow it out for you with my mouth."

Wenjun pulled out his wet penis and lay on the ground. Zhizhi then lay on his lap and sucked on Wenjun's hard penis. Zhizhi turned her head to look at Jiajie, who was staring intently. Jiajie put one hand into her panties and touched her vagina.

"Jiajie, take off your pants and straddle Wenjun's mouth. Let him lick you. It feels very good, even better than touching yourself."

Jiajie struggled inwardly, a little tempted, but hesitant.

Zhizhi then got up and went to the bedside, reached out and took off Jiajie's light blue panties, and pushed up Jiajie's bra, rubbing Jiajie's breasts.

Wenjun sat up and saw Zhizhi caressing her sister's genitals with one hand. Jiajie's labia were slightly red, and her vulva was beautifully swollen and glistening with vaginal fluid. Her breasts were round and full, with small areolas and tiny, pale pink nipples—truly beautiful.

Wenjun played with his own hard penis with his hand. As he watched, he leaned down and licked Jiajie's vagina with his tongue. Jiajie shuddered; she had never imagined that being licked on her genitals could feel so good. She uttered, "Oh... um... um... um... Wenjun... you're licking... so good... oh..."

Wenjun licked upwards until he found a small, protruding bump. He thought this must be the clitoris that Zhizhi had told him about, so he kept licking it with his tongue. One finger slid up and down along the vagina. Jiajie's vagina kept secreting fluids, making it wet and slippery.

Zhizhi grabbed Wenjun's other hand and made him caress Jiajie's breasts. Zhizhi then took off Jiajie's bra. "Wenjun, it feels so good, right there,"

Zhizhi squatted down beside Wenjun's legs, licking his testicles with her tongue and stroking his penis with one hand. After about five or six minutes, she took Wenjun's hard penis into her mouth and sucked on it, rocking it back and forth.

"Oh, Sister Zhi, you're sucking me so well, just like that, it feels so good."

Wenjun's tongue also quickly licked Jiajie's clitoris, making Jiajie grip the blanket tightly with both hands.

"Mmm... Wenjun, you're licking me... so... well... oh... mmm... oh... oh."

"Wen... Jun... lick lighter... faster... oh... don't... stop... I'm... coming... oh... oh... so good... just like that... oh... oh... I'm... coming." Jiajie pressed Wenjun's head with one hand.

"Oh...oh...ah...coming...oh...um...um..."

Jiajie's whole body stiffened and she strained, her legs trembling as she tightly gripped Wenjun's head. Her vagina opened and writhed, Wenjun's chin covered in his sister's vaginal fluids and vaginal discharge. Wenjun brought his lips to her vaginal opening and sucked, Jiajie's body trembled again, experiencing repeated orgasms.

Wenjun's penis also swelled, his body and buttocks swaying back and forth with Zhizhi's sucking and releasing, a tingling sensation running down his back as a large amount of semen spurted out. Zhizhi held the glans in her mouth and swallowed all the semen.

Zhizhi and Wenjun lay down on the bed, and Zhizhi looked at the bedside clock; it was already 7:30.

"So tired, Wenjun, you enjoyed sex, didn't you?" Zhizhi said.

"Sister Zhi, when I insert it into your vagina, the whole penis is being squeezed, that warm feeling is really amazing. Sister, are you comfortable?"

"Wenjun, you just licked me so well, it felt so good. Zhizhi, let's keep what happened today a secret, don't tell anyone."

"You're crazy, no way, Wenjun just made me feel so good, even better than my boyfriend, I'm afraid I'll want to have sex with Wenjun again in the future." "

Sister Zhi, big sister, thank you for letting me experience the pleasure of sex for the first time."

"I just came twice in a row, I'm a little tired, I want to sleep for a bit," Jiajie said.

"Me too," Zhizhi also wanted to sleep a bit more. Before, with her boyfriend, she would only come twice at most, but today Wenjun made her come three times, she was also a little tired.

"Sister, can I hold you while we sleep?"

"Okay, you can hold me and touch me, but you can't put your penis inside me. We siblings can't do incest."

Wenjun held Jiajie, and Zhizhi held Wenjun. The three of them went back to sleep like that.

From then on, when Wenjun and his sister Jiajie were in the room, Jiajie only wore underwear and pants, and Wenjun also only wore underwear. The two siblings would perform oral sex on each other, bringing each other to orgasm. But Jiajie was very insistent and always refused to let Wenjun's penis penetrate her vagina. At most, she would let his glans rub against her clitoris and vagina.

When her boyfriend was busy with work or away on business, Zhizhi would come to the two siblings' place and let Wenjun penetrate her vagina. She would also teach the two siblings some sex techniques and knowledge, and exchange sexual experiences.

When Ma Wenjun was in his third year of junior high school, his father, an assistant manager at an insurance company, developed feelings for a female colleague and abandoned his family to live with her. He rarely came home, leading to his parents' divorce. His

mother worked in a factory, earning a meager salary to support Wenjun and his older sister Jiajie, who was three years older than him. The two siblings had a very close relationship since childhood and were always considerate of their family.

After graduating from high school, Jiajie achieved good results in the college entrance examination and, to ease her mother's burden, chose to attend a publicly funded normal university. Wenjun believed that as the only boy in the family, he should shoulder the burden of supporting his family. Therefore, after graduating from junior high school, he chose to work part-time while studying, living a life of working during the day and attending night school in the evening. Although it was more tiring, Wenjun felt it was worthwhile to reduce his mother's burden. After

three years of working part-time while studying, Wenjun finally graduated from high school. He was also admitted to the same school as his sister, majoring in biology. To reduce expenses, the two siblings rented a suite together. The sister slept on the bed, and the brother slept on a mattress on the floor.

The two siblings had a very good relationship since childhood, so when Jiajie changed clothes, she didn't mind that her brother was in the room. She would just tell Wenjun to turn his head away because she needed to change, and then she would take off and change her clothes directly.

One time, Jiajie saw Wenjun listening to music with his eyes closed, so she took off her coat and skirt. Wenjun happened to turn around and open his eyes, and saw that Jiajie was only wearing a white bra and white panties. Her breasts and genitals were full and she looked very beautiful. His penis got hard.

Jiajie also saw his bulging pants, but she was not angry. She smiled and said to Wenjun, "Wenjun, you were peeping at your older sister changing clothes!"

Wenjun quickly explained, "No, no," and immediately turned his head away.

Seeing Wenjun's bewildered expression, Jiajie quickly changed her clothes and said to him, "It's okay, I was just kidding. I'm your older sister, we've always been like this. By the way, Wenjun, what do you think of my figure?"

"Sis, I think you're the most beautiful goddess in my heart."

"Don't try to sweet-talk me. You shouldn't stay cooped up in your room all day. Go out and make some friends. You're old enough to have a girlfriend. We have a new female student in our Chinese department, she's very elegant, has a great temper, and is quite pretty. I'll introduce you two sometime."

"Sister, dating costs money. I'm still young, let's talk about it later."

The 11th day of the 8th lunar month was Jiajie's birthday. Jiajie bought some side dishes and two bottles of rosé wine and invited her best friend, Zhizhi, to her room to celebrate. Zhizhi's boyfriend couldn't come because he had to go on a business trip to Japan.

The three chatted and drank happily, and before they knew it, the two bottles of rosé wine were finished. Jiajie checked the time; it was already 12:30. She asked Zhizhi to stay and sleep in the bed with her. Zhizhi was very familiar with the two siblings and was a little drunk, so for safety reasons, she agreed.

Around 5 a.m., Zhizhi got up to get a drink of water because she was thirsty. The nightlight was on in the room. Zhizhi carefully moved her feet, afraid of stepping on Wenjun. Her eyes were on the floor, and she saw that Wenjun's shorts were bulging. Zhizhi stepped over Wenjun's body, went to the refrigerator, found a bottle of mineral water, and took a few sips. Just then, Wenjun touched his penis a few times, which made Zhizhi swallow hard.

Zhizhi had already had sex with her boyfriend. Out of curiosity, she quietly walked up to Wenjun and squatted down. Seeing that Wenjun was sleeping so soundly, she reached out her small hand and gently touched the erect penis that was bulging in Wenjun's shorts.

"Wow, it's thicker and bigger than my boyfriend's," Zhizhi thought to herself.

Seeing Wenjun fast asleep, Zhizhi slowly unzipped his shirt and pulled his penis out of the front opening of his underwear. She then gently grasped it with her small hand and stroked it up and down.

Stimulated, Wenjun opened his eyes and saw Zhizhi's small hand stroking his penis, which felt incredibly pleasurable. He also reached inside Zhizhi's nightgown, feeling her slightly damp underwear, and stroked her vaginal opening with his fingers. Zhizhi turned around and kissed Wenjun, their hands touching each other's genitals.

Stimulated, Zhizhi naturally made "mmm...mmm..." sounds.

Jiajie woke up at the sound and saw her best friend and her younger brother caressing each other. Jiajie watched silently with narrowed eyes, her hand unconsciously reaching under the blanket to caress her inner thigh.

Zhizhi gently licked Wenjun's nipple with her tongue. The nipple hardened, and Zhizhi slowly licked down to Wenjun's erect penis. Her tongue licked the glans, and then she took it into her mouth, slowly sucking it up. After swallowing and releasing it about ten times, her tongue circled around the glans.

Wenjun couldn't resist this teasing. It was his first time giving oral sex and his first time touching a woman's genitals. His penis remained erect, and some fluid leaked from his urethra. Wenjun slipped his fingers inside Zhizhi's pink panties, sliding them up and down her vagina until he touched her clitoris. Zhizhi's body trembled slightly. Wenjun gently rubbed it, and instantly, Zhizhi's vagina secreted vaginal fluid, wetting both of her labia.

Zhizhi hummed softly, "Mmm...mmm...mmm...mmm...mmm."

After about seven or eight minutes of swallowing and spitting, Wenjun's glans swelled even more, and his penis became even harder. Zhizhi knew he was about to ejaculate, so she sped up her swallowing and spitting, sucking from the base of his penis to the glans with each thrust. Wenjun felt a tingling sensation down his spine and ejaculated his virgin semen into Zhizhi's mouth. Zhizhi also sucked and spit out the glans while holding it in her mouth. When Wenjun stopped ejaculating, her small mouth left his penis and she swallowed the thick semen.

"Sister Zhi, I'm sorry, this is my first time ejaculating. It felt so good, I couldn't control myself and it came into your mouth."

"Wenjun, is that true? You're so innocent. You've only ejaculated for the first time in your life. Haven't you ever masturbated?"

"Sister Zhi, I really have never masturbated. I worked part-time while studying in high school, and I was exhausted every day. Whenever I had time, I would sleep a little to catch up on sleep. Today is also the first time I've touched a woman's body. Thank you so much."

"Wenjun, I want you to experience what it's like to have sex with a woman today."

"Sister Zhi, I'm already satisfied that you let me touch you. Besides, you have a boyfriend. Isn't this inappropriate?"

"Wenjun, don't be so conservative and rigid. It's okay. I'm not a virgin anymore. Let your penis experience the pleasurable feeling inside a woman's hole. As long as we don't tell, my boyfriend won't know. You touched me down there and it felt itchy. I need you to help me relieve that itch."

Zhizhi kissed Wenjun's lips. Wenjun smelled the fishy scent of his own semen. Zhizhi also grasped Wenjun's glans with her small hand, squeezing and stroking it up and down until his soft penis slowly hardened. Wenjun also placed his palm on Zhizhi's breasts and nipples, gently rubbing them.

Zhizhi hummed softly again, "Mmm...mmm...mmm...mmm...mmm." Zhizhi straightened up and took off her nightgown, leaving only a pink bra and silk transparent panties. Then she pulled Wenjun's hand to her clitoris and gently rubbed it.

"Wenjun, that protruding little thing is the clitoris, which is a woman's sensitive spot. Gently rub around it."

Wenjun's fingers pressed against her clitoris through her panties, slowly rubbing it. The silk panties were so soft; he thought to himself, "It feels quite comfortable to touch like this." Wenjun's fingers slid down to Zhizhi's vagina, moving up and down, until her panties were soaked.

Zhizhi pulled off Wenjun's shorts and underwear, her five fingers grasping his erect penis and moving them up and down. Sometimes her palms caressed Wenjun's testicles, making his penis even harder, thicker, and more erect.

"Mmm...mmm...Wenjun, take off my pants and insert your penis into my vagina."

Wenjun took off Zhizhi's bra and underwear. Zhizhi spread her legs, and Wenjun knelt between them, looking at her dark red labia with a small opening in the middle. He grabbed the head of his penis and rubbed it against her clitoris, and vaginal fluid flowed out of her vagina.

"Mmm... Wenjun, I'm so itchy, mmm... hurry up and put it in... mmm... mmm."

Wenjun grabbed his penis and aimed it at the vaginal opening. With a thrust of his waist, his entire penis was inserted into the warm little hole. Wenjun lay down and moved his waist up and down and back and forth, inserting into Zhizhi's tight little hole.

"Oh...so good...Wenjun...you're making me feel so good...just like that...it feels so good."

"Sister Zhi, I feel so good too, my whole penis is wrapped in your vagina, it feels so good."

Jiajie, who was on the bed, saw the two of them intertwined, her younger brother's buttocks moving up and down, having sex with her classmate. Seeing this live sex show, her panties were also wet, and her fingers were also inserted into her panties to rub her clitoris. Her eyes and mouth were tightly closed, her upper lip biting her lower lip, not daring to make a sound.

"Oh, Wenjun...you're filling me up so much...mmm...just like that...thrust harder...oh...mmm...mmm...oh...so good..."

Wenjun propped himself up with his hands, looking towards Jiajie. His sister's blanket was shaking, revealing her toes, which were stiffly stretched out. Wenjun knew that Jiajie must have seen what they were doing and couldn't stand it, so she was masturbating. Wenjun thrust hard into Zhizhi's vagina, inserting his entire penis.

"Oh... Wenjun... you're hitting my uterus... oh... it feels so numb... so good... oh... you're hitting it again... just like that... I'm... about to come... oh... oh..."

"Oh... Wenjun... faster... oh... you're fucking me... even better than my... boyfriend... oh... don't stop... oh... oh... faster... oh... I'm... about to come... oh..."

Zhizhi used all her strength to hug Wenjun tightly, her fingers pinching his back. Wenjun continued to thrust, and gushes of vaginal fluid sprayed onto Wenjun's glans. Because Zhizhi had helped him ejaculate once before, Wenjun showed no signs of ejaculating.

Wenjun continued thrusting, and Zhizhi felt a ticklish sensation in her lower body again. She hooked her legs around Wenjun's buttocks, her mouth slightly open, enjoying the pleasure of lovemaking, unconsciously moaning softly, "Mmm...mmm...mmm...oh...oh...oh..." Each thrust from Wenjun was heavy, reaching Zhizhi's cervix, making her whole body tingle, her juices flowing freely, even her buttocks were wet. Wenjun continued to thrust rapidly into Zhizhi's vagina, the room filled with rhythmic "sizzling" and "peeping" sounds.

"Wen Jun...you...are so good at it...it feels so good...I...am...coming again."

"Sister Zhi, your hole is so tight around my cock, it feels so good too."

"Wen Jun...thrust harder...I really...am...coming...you're so strong...oh..."

"Oh...my...uterus...is about to be...broken...oh...it feels so good...oh..."

"Oh...oh...coming...I'm going to die...oh...oh...harder...oh...it's coming...hmm."

Zhi Zhi hugged Wen Jun tightly with both hands, her body convulsing and trembling. Wen Jun felt like a tap wasn't turned off properly inside Zhi Zhi's hole, water dripping onto his glans, her vagina contracting and clenching, it felt so good.

Wenjun's penis continued to thrust in and out. After about two or three minutes, Zhizhi was brought back to her senses by the penetration.

"Mmm...mmm...oh...oh...Wenjun...I can't take it anymore...it feels so good.

" "Mmm...oh...oh...you're better at it than my...boyfriend...it feels so good...oh...oh...oh."

Jiajie's fingers on the bed moved faster and faster, and the blanket shook more. While Wenjun was penetrating Zhizhi, he watched his sister masturbate. His penis became even harder. He put Zhizhi's legs on his shoulders and with each rapid thrust, he pulled out, pulling the glans to the vaginal opening and then thrusting it in deeply, making Zhizhi's moans louder and louder.

Suddenly, Jiajie cried out "Ah!" Wenjun and Zhizhi saw Jiajie's legs straighten and her body convulse. Jiajie had reached orgasm.

"Jiajie... your brother... feels so good inside me... it's your turn... let him do it... see... it feels so good."

"I'm sorry, seeing you two having sex made me unconsciously touch myself, did I disturb you? I can't do it with my brother, that's incest, and besides, I want to give my virginity to my husband," Jiajie said shyly, opening her eyes.

"Jiajie...you're really...conservative...as long as...you don't get pregnant...and have...children...it's fine."

"Wenjun...you're so good at it...oh...oh...oh...just like that...deeper...it feels so good...oh...oh..."

"Oh...Wenjun...fuck...faster...I...am...coming...again...faster...oh...oh..."

Wenjun thrust rapidly, and suddenly, Zhizhi cried out "oh...oh...oh...ah..." and a large amount of vaginal fluid gushed into Wenjun's glans again, and Zhizhi had another orgasm.

After the vaginal fluid had finished gushing out, Zhizhi thought about dragging Jiajie down with her, and her vagina was a little red and swollen from Wenjun's penetration, so she said to Wenjun, "Go help your sister, let her experience the pleasure of sex."

"Sister Zhi, I dare not."

"Wenjun, my lower body hurts a little. Then get up, and I'll blow it out for you with my mouth."

Wenjun pulled out his wet penis and lay on the ground. Zhizhi then lay on his lap and sucked on Wenjun's hard penis. Zhizhi turned her head to look at Jiajie, who was staring intently. Jiajie put one hand into her panties and touched her vagina.

"Jiajie, take off your pants and straddle Wenjun's mouth. Let him lick you. It feels very good, even better than touching yourself."

Jiajie struggled inwardly, a little tempted, but hesitant.

Zhizhi then got up and went to the bedside, reached out and took off Jiajie's light blue panties, and pushed up Jiajie's bra, rubbing Jiajie's breasts.

Wenjun sat up and saw Zhizhi caressing her sister's genitals with one hand. Jiajie's labia were slightly red, and her vulva was beautifully swollen and glistening with vaginal fluid. Her breasts were round and full, with small areolas and tiny, pale pink nipples—truly beautiful.

Wenjun played with his own hard penis with his hand. As he watched, he leaned down and licked Jiajie's vagina with his tongue. Jiajie shuddered; she had never imagined that being licked on her genitals could feel so good. She uttered, "Oh... um... um... um... Wenjun... you're licking... so good... oh..."

Wenjun licked upwards until he found a small, protruding bump. He thought this must be the clitoris that Zhizhi had told him about, so he kept licking it with his tongue. He slid one finger up and down along the vagina. Jiajie's vagina kept secreting vaginal fluid, and her vagina became wet and slippery.

Zhizhi grabbed Wenjun's other hand and made her caress Jiajie's breasts. Zhizhi then took off Jiajie's bra. "Wenjun, it feels so good, right there."

Zhizhi squatted down beside Wenjun's legs, licking his testicles with her tongue, while her other hand grasped his penis and slid it up and down. After about five or six minutes, she took Wenjun's hard penis into her mouth and sucked on it, rocking back and forth.

"Oh, Sister Zhi, you're sucking me so well, just like that, it feels so good."

Wenjun's tongue also quickly licked Jiajie's clitoris, making Jiajie grip the blanket tightly with both hands.

"Mmm... Wenjun, you're licking your older sister so well... Oh... Mmm... Oh... Oh..."

"Wen... Jun... Lick lighter... Faster... Oh... Don't... Stop... I'm... Coming... Oh... Oh... So good... Just like that... Oh... Oh... I'm... Coming..." Jiajie pressed Wenjun's head down with one hand.

"Oh... Oh... Ah... Coming... Oh... Mmm... Mmm..."

Jiajie's whole body stiffened and she strained, her legs trembling, tightly clamping Wenjun's head, her vagina opening and writhing, Wenjun's chin covered in his sister's vaginal fluid and vaginal discharge, Wenjun put his lips to her vaginal opening and sucked, Jiajie's body trembled again, experiencing repeated orgasms.

Wenjun's penis was also swollen, his body and buttocks swaying back and forth with Zhizhi's sucking and releasing, a tingling sensation running down his back, and a large amount of semen spurted out. Zhizhi, with the glans in her mouth, swallowed all the semen.

Zhizhi and Wenjun lay down on the bed, and Zhizhi looked at the bedside clock; it was already 7:30.

"I'm so tired. Wenjun, you enjoyed sex, didn't you?" Zhizhi said.

"Sister Zhi, when I insert it into your vagina, the whole penis is being squeezed, that warm feeling is really amazing. Sister, are you comfortable?"

"Wenjun, you just licked me so well, it felt so good. Zhizhi, let's keep what happened today a secret, don't tell anyone."

"You're crazy, no way, Wenjun just made me feel so good, even better than my boyfriend, I'm afraid I'll want to have sex with Wenjun again in the future." "

Sister Zhi, big sister, thank you for letting me experience the pleasure of sex for the first time."

"I just came twice in a row, I'm a little tired, I want to sleep for a bit," Jiajie said.

"Me too," Zhizhi also wanted to sleep a bit more. Before, with her boyfriend, she would only come twice at most, but today Wenjun made her come three times, she was also a little tired.

"Sister, can I hold you while we sleep?"

"Okay, you can hold me and touch me, but you can't put your penis inside me. We siblings can't do incest."

Wenjun held Jiajie, and Zhizhi held Wenjun. The three of them went back to sleep like that.

From then on, when Wenjun and his sister Jiajie were in the room, Jiajie only wore underwear and pants, and Wenjun also only wore underwear. The two siblings would perform oral sex on each other, bringing each other to orgasm. But Jiajie was very insistent and always refused to let Wenjun's penis penetrate her vagina. At most, she would let his glans rub against her clitoris and vagina.

When her boyfriend was busy with work or away on business, Zhizhi would come to the two siblings' place and let Wenjun penetrate her vagina. She would also teach the two siblings some sex techniques and knowledge, and exchange sexual experiences.

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My sister's classmate came to stay overnight.

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