My pregnant sister-in-law

My name is Song Peiyu, and I was born into an ordinary middle-class family. My father is a bank manager, my mother is a primary school teacher, and I have an older brother who is eight years older than me. When I was ten, my brother went to study in another city. After graduating, he found a job at a food company in K city and settled down there.

Two years ago, my brother suddenly went to court to get a notarized marriage. It was completely unexpected and caught the family off guard. Later, he brought his wife home during a holiday, and I met my sister-in-law for the first time: she turned out to be my brother's colleague. She was pretty, with regular features, a graceful figure, and a gentle and virtuous personality. She was also very well-mannered.

Soon, my parents were very satisfied with this daughter-in-law, and I envied my brother for marrying such a beautiful woman. Although the marriage was a done deal, traditional customs still couldn't be ignored. So, before the Lunar New Year, an auspicious day was chosen to hold a wedding banquet to entertain relatives and friends.

After everything was settled and the New Year was over, my older brother and sister-in-law returned to their jobs. As a student, I continued to pick up my books and study hard. Finally, my hard work paid off, and I was admitted to a prestigious university with a long history—L University—with excellent grades, much to my parents' delight. Coincidentally, the campus was located in the suburbs of K City, not far from my older brother's home.

My mother specifically called my older brother to inform him that I would be staying at their house from then on. Fortunately, my older brother's house was spacious, so when I arrived with my heavy luggage, an empty room had already been prepared. When I saw my sister-in-law again, she was nearly seven months pregnant; and to focus on childbirth, she had taken maternity leave from work.

After school started and I began my new university life, my activities, besides the campus, revolved around my brother's house. When I came home from school, my sister-in-law would tirelessly prepare a sumptuous meal for my brother and me. She also took special care of me in all aspects of daily life.

I was very grateful to my sister-in-law, feeling that I was troubling her and couldn't just be waited on hand and foot all the time; plus, with her large belly, she had difficulty moving around. Therefore, whenever I had free time, I would help with the housework.

One Saturday morning, my brother was away on a business trip to a factory, and my sister-in-law and I were cleaning the house. Because of her pregnancy, my sister-in-law had to rest every now and then, her forehead already drenched in sweat. She tried to cool herself down by shaking the collar of her loose t-shirt, but the sweat kept soaking through, making the clothes sticky and clinging to her body. My sister-in-law told me to clean up after her and then went back to her room to change.

I quietly followed her and found that the door wasn't closed properly. Peeking through the crack, I saw my sister-in-law taking off her t-shirt and shorts, leaving her only in a white bra and panties.

Looking at her back, her skin was smooth and fair. Although she was pregnant and her figure was slightly fuller, her rounded curves added to her mature beauty. She picked up a towel and carefully wiped the sweat from her body, then turned around: her breasts were firm and full, the two mounds of flesh swaying in front of her as if they were about to burst out of her bra; her protruding belly was large and round, without a single wrinkle.

Looking at such a beautiful female body, my lower body slowly hardened and rose. My sister-in-law changed into a light brown dress and walked towards the door; I quickly slipped into the living room, continuing my work as if nothing had happened.

That evening, when my sister-in-law was taking a shower, I again tiptoed to the bathroom door. Through the door, I could hear the "sizzling" sound of water rinsing, and her soft humming. I turned my gaze to the laundry basket outside the door and saw my sister-in-law's clothes piled on top. Reaching out to pick up her bra, I felt a slight warmth still lingering on it; picking up her panties, I noticed a slight dampness at the crotch.

Taking a closer sniff, the distinctly feminine scent filled my nostrils. This was bad; my manhood began to swell and throb again. At that moment, the sound of water in the bathroom stopped, presumably my sister-in-law was getting dressed. To avoid being caught in the act, I quickly put my things back and hurried back to my room. That night, hiding under the covers, I fantasized about my sister-in-law's naked body and masturbated several times.

Several weeks later, on a Wednesday, I was busy at the library preparing for an impromptu presentation and didn't get back to my older brother's house until after 9 p.m. When I entered, I found the living room completely dark. My brother had to entertain clients and probably wouldn't be back until late. Where was my sister-in-law? "Where could she be so late?"

I wondered, walking back to my room with a puzzled look in my eyes. I saw light coming from her room. I pushed open the door and was shocked to see her bathrobe open, revealing only black jacquard underwear. One hand was on her ample breasts, and the other was inside her underwear, passionately caressing herself.

My sister-in-law was startled by my sudden appearance, letting out a gasp. She quickly pulled her bathrobe tighter, her face flushed, and she couldn't bear to look me in the eye. I was immediately embarrassed and kept saying, "I'm sorry, I'm sorry!" before hurriedly leaving the room.

A few minutes later, I composed myself and went to my sister-in-law's room. This time, I remembered to knock. I said, "Sister-in-law, I'm coming in!"

As soon as I entered, my sister-in-law was already wearing a light blue nightgown and leaning against the headboard. I bowed again to apologize for my earlier rudeness, and my sister-in-law quickly said, "It's okay, it's okay, actually... I was wrong too." She then lowered her head again.

Seeing my sister-in-law's blushing face, her already beautiful features looked even more delicate now. I stared at her, mesmerized, for a long time before finally looking away. I mustered my courage and asked, "Sister-in-law... you... you were... doing... that just now?"

My sister-in-law's body trembled, and she suddenly looked up. Her face flushed even redder, her lips trembled slightly, as if she wanted to say something but couldn't bring herself to speak. Finally, she turned her head away and nodded slightly.

I continued, "Sister-in-law, perhaps... you feel lonely?"

My sister-in-law paused for a long time before speaking, "Since marrying your brother, we've been inseparable and very happy. But after I got pregnant, he rarely touched me. Lately, he's been busy at work and is rarely home. We spend less time together as a couple, and I'm someone who doesn't like being lonely, so I have to..." She couldn't continue.

I said, "Sister-in-law, actually... it's really nothing!" As I spoke, I slowly placed my hand on her shoulder.

My sister-in-law gently pulled away, saying, "Look at you, you're up to no good. Actually, this is what I was going to do."

She took a bottle of lotion from a drawer in the low cabinet beside the bed. "This is for pregnant women,"

she said. "Apply a little every day to prevent stretch marks. My skin is so smooth thanks to this daily care." With that, she lifted her nightgown, revealing her fair, rounded belly. Just as she was about to open the cap, I stopped her.

"Sister-in-law, you work so hard usually, let me do it for you today!"

I took the lotion from her, opened the cap, poured some into my hands, and began to massage my belly. My hands gently massaged from top to bottom, from left to right, and then circled around my navel.

I asked my sister-in-law, "Is this okay?" She closed her eyes slightly and nodded, "Mmm!" The well-controlled pressure made her feel very comfortable. Her lips were slightly parted, with a faint smile, and she seemed to be enjoying it.

My fingertips felt the smooth, flawless, delicate skin, and a desire ignited in my chest. I restlessly reached my hand into her lifted nightgown, but my sister-in-law stopped me. "Mmm! No!" I persisted, my attention shifting downwards, caressing the triangle area between her legs through her pajama bottoms. This time, I was ruthlessly turned down again. My sister-in-law said with

a hint of annoyance, "I told you it wouldn't work!" I was rebuffed and said dejectedly, "I'm sorry."

The massage ended hastily, and my sister-in-law turned off the light and went to sleep; I went back to bed and had a few more rounds of intense self-pleasure. I was filled with thoughts of getting intimate with my sister-in-law, but I had no opportunity. I could only wait patiently, and finally, the opportunity came.

One day, my brother went on a business trip for several days. That night, it was drizzling outside, and the dim streetlights illuminated the slippery alley, making it seem particularly deserted. I had just finished reading, closed my book, and lay in bed, but I tossed and turned and couldn't fall asleep.

The air was completely silent, except for the rhythmic ticking of the alarm clock by my bedside. I glanced sideways and saw that it was past midnight. Suddenly, I felt thirsty and got up to go to the restaurant to get some water.

Having just finished drinking water, I glanced towards my sister-in-law's room. A thought struck me, and I tiptoed in. The streetlights shone through the window, illuminating my sister-in-law, who was already fast asleep. She lay on her left side, wearing a cream-colored nightgown, with only a thin blanket covering her abdomen, her arms tightly wrapped around a large pillow. My sister-in-law was indeed afraid of loneliness; seeking comfort, she hugged the pillow, as if she were hugging my brother as she fell asleep.

I quietly sat on the bed, my hand reaching towards my sister-in-law's fair, jade-like legs. Hmm! They still felt so smooth, as comfortable as silk. Holding my breath, I gently lifted the hem of her dress, extending it upwards to her thighs. I then straightened her bent right leg, keeping her left leg bent. With just that small movement, her dark panties were revealed under her skirt, enough for me to reach down and touch them.

My sister-in-law's pubic area was warm and soft, and I was enjoying touching it when I heard her let out a soft moan: "Mmm...husband...you're so naughty..." It seemed she was having a wet dream!

I moved my hand to her abdomen, gently stroking it through her nightgown. My sister-in-law's abdomen was perfectly rounded, and as I touched it, my penis began to swell. I continued to move upwards, and in an instant, I arrived in front of her full, large breasts. Since she wasn't wearing a bra, I could directly feel the excellent elasticity of her skin through the thin fabric, and her nipples were already hard from stimulation and teasing.

My sister-in-law was still fast asleep, her breathing as even as ever, as if unaware of what was happening. I was already itching to get my way, so I immediately pulled down my shorts, took out my swollen, enormous penis, and began rubbing it against her ample buttocks.

She must have felt a warm sensation coming from behind her; she woke up. She sat up, turned around, and saw a figure lying beside her in the darkness, and was startled. "Help…" she tried to shout, but I covered her mouth with my hand.

"Sister-in-law, don't be afraid. It's me."

Hearing my voice clearly, she exclaimed in surprise, "You...you...what are you doing here?"

I said, "Sister-in-law, I just got up to get some water and came into your room to check on you. But when I saw you sleeping, I couldn't control myself. You're so alluring..." As soon as I finished speaking, I kissed her pink neck and fragrant shoulders.

"You...you dare...I...I'm going to call for help!" she cried, twisting and struggling.

"Sister-in-law, I've really wanted to be with you for a long time...I don't know why, but I think you're the most beautiful woman in the world. The moment I saw your big belly and huge breasts, I..." I said, taking her hand and trying to shove it between my legs. She couldn't dodge in time and touched my burning hot and incredibly thick penis.

"No...no...I'm your sister-in-law...ah...no..."

At this moment, I slipped one hand inside her panties, rubbing her clitoris between her legs, while my other hand gently caressed her full breasts. I lowered my head and sucked and nibbled on her erect nipples.

My sister-in-law felt a surge of excitement; she had never experienced anything like this before. Usually, my brother would just push her down on the bed and start a passionate encounter, so she always thought that sex was a painful and agonizing experience.

"No...no...I...am...nine months...about to give birth..." My sister-in-law pushed against my body, but her legs involuntarily opened, and her vagina flowed with honey-like fluid.

I knew my sister-in-law wanted it, and I was incredibly excited. I turned on the bedside lamp. In the dim, yellowish light, my sister-in-law's cheeks were flushed, her full, rounded breasts hung low on her chest, and her rounded belly was high; her entire figure was incredibly beautiful.

I was mesmerized and couldn't help but whisper in her ear, "Sister-in-law...you're so beautiful...I want you..."

Before she could even speak, I pushed her down onto the bed without a word, pulled down her panties, aimed my penis at her honey pot, and quickly thrust it in. "Ugh...no...gently...gently..." My sister-in-law shook her head violently from side to side, pushing against my chest with both hands.

I increased the speed and force of my thrusts. The walls of her honey pot gripped my penis tightly; I hadn't expected that even after marriage, my sister-in-law still maintained a youthful tightness.

I said, "Sister-in-law...not bad!" She endured the thrusts, drenched in sweat, panting softly, "Mmm...ooh...so good..."

"Is it good?" I said again, "Then let's go!"

I continued to thrust forcefully inside her, her wanton moans becoming more frequent and higher in pitch. I knew we were both close to climax, and just as I was about to ejaculate, I suddenly pulled out of her. But I saw her moaning unsatisfiedly, grabbing my penis and actively pushing it into her vagina.

"No...don't pull out...I can't...take it...anymore..."

At her request, I thrust into her full body again, even harder than before.

"Ah...my stomach...it hurts so much...ah..." she cried out.

Ignoring all that, I picked her up and thrust into her violently, her large breasts swaying up and down.

My sister-in-law, supporting herself on my shoulders, ignored the baby rolling around in her womb, moaning loudly, "Ah...so swollen...ah..." A surge of intense pleasure coursed through her, and she abruptly lifted her lower body, her large belly protruding as she faced me. After several rounds, I finally ejaculated.

My sister-in-law was exhausted, almost fainting. Suddenly feeling the urge to urinate, she struggled to her feet, one hand supporting her aching lower back, the other cradling her heavy belly, slowly walking with a swaying gait.

Seeing this, my penis hardened again. My sister-in-law felt her belly was swollen and much larger than before. But she didn't seem to care. She slowly walked into the bathroom, supporting her back with her hands and leaning against the wall, barely managing to sit on the toilet. I couldn't resist any longer. As soon as my sister-in-law got up to flush, I hugged her from behind, grabbed my penis, and thrust it into her.

"Ah...no...no...my stomach...is so bloated...ah..." my sister-in-law said, but she still obediently raised her buttocks high, allowing my penis to penetrate even deeper.

"What's wrong? Are you going into labor?" I supported the bottom of my sister-in-law's abdomen, clearly feeling it drop slightly and become larger and harder.

"No...just now...my stomach...pressed...against the wall...it hurts..." she gasped for breath, clutching her large belly, as if about to collapse to the ground.

"Sister-in-law, let me help you to bed," I said quickly.

"No...I...can't walk...my stomach hurts so much...ah..." My sister-in-law squatted on the ground, clutching her stomach and groaning. I had no choice but to struggle to lift her up, half-dragging, half-pulling her to the bed.

I carefully laid her down, placing a pillow under her waist. This made her already protruding belly appear even larger, making her body even more sexy; from her feet, you couldn't see her face at all. Due to the intense activity just now, a little milk had seeped from her nipples. My heart raced, and like when I was a child nursing, I suddenly pounced on her, taking her nipple in my mouth and sucking hard.

"Ah...ah...you...you be gentle...I...can't take it..."

With my sister-in-law's soft cry, my penis became hard again. I rubbed my penis against my sister-in-law's stomach and breasts, and on a whim, I placed it in the deep cleavage of her ample breasts, asking her to squeeze it between her breasts with her hands. She did so shyly, and my penis moved back and forth contentedly.

A saying I'd heard somewhere flashed through my mind: "Nothing tastes better than dumplings, nothing's more fun than your sister-in-law." The latter part seemed particularly apt in this situation.

As the pace quickened, I approached the point of ejaculation. Finally, a stream of hot semen shot out, landing on my sister-in-law's breasts, some even splashing onto her face. Seeing this, I wickedly put my penis to her mouth and said, "Lick it clean for me."

She initially resisted, but couldn't resist me, so she opened her mouth and took it in. I hadn't expected my sister-in-law's "blowjob" skills to be so impressive; she controlled the force perfectly, making me feel incredibly good. I ejaculated into her mouth shortly after. Feeling embarrassed to make her swallow it, I handed her some tissues so she could clean herself up.

Thinking we'd had enough, it was time to wrap things up. So I parted her legs and launched my final assault on her vagina. Amidst her moans, we both reached orgasm, and I ejaculated again, reluctantly withdrawing…

I lay beside my sister-in-law, both of us panting. I noticed tears glistening in her eyes; I couldn't tell if they were tears of shame for doing this behind her husband's back, or tears of joy from not having enjoyed it so much in a long time. I pulled her into my arms and said, "Sister-in-law, are you happy? My skills are probably just as good as your brother's, right?"

My sister-in-law blushed, lightly punched my chest, and said softly, "You naughty boy, you're so annoying!" Then she buried herself in my arms again. I knew I had succeeded…

A few weeks later, my sister-in-law gave birth to a boy, my brother became a father, and I became an uncle. But from then on, my sister-in-law and I developed a tacit understanding: when my brother was home, she was his wife, my sister-in-law; but when he wasn't home, I would take over the nest and replace her. My sister-in-law said that before I finish my studies and leave their home, she wants to enjoy time with me because a completely new experience awaits her…

My name is Song Peiyu, and I was born into an ordinary middle-class family. My father is a bank manager, my mother is a primary school teacher, and I have an older brother who is eight years older than me. When I was ten, my brother went to study in another city. After graduating, he found a job at a food company in K city and settled down there.

Two years ago, my brother suddenly went to court to get a notarized marriage. There was no warning beforehand, and it was completely unexpected by the family. Afterwards, he brought his wife home during a holiday, and I met my sister-in-law for the first time: she turned out to be my brother's colleague. She was pretty, with regular features; she had a graceful figure; she was gentle and virtuous, and handled herself very well.

Soon, my parents were very satisfied with their daughter-in-law, and I envied my older brother for marrying such a beautiful woman. Although the marriage was a done deal, traditional etiquette couldn't be ignored. So, before the Lunar New Year, we chose an auspicious day to hold a wedding banquet to entertain relatives and friends.

After everything was settled and the New Year was over, my older brother and sister-in-law returned to their jobs. As a student, I continued to pick up my books and study hard. Finally, my hard work paid off, and I was admitted to a prestigious university with a long history—L University—with excellent grades. My parents were overjoyed. Coincidentally, the campus was located in the suburbs of K City, not far from my older brother's home.

My mother specifically called my older brother to inform him that I would be staying with them from then on. Fortunately, my brother's house was spacious, so when I arrived with my heavy luggage, an empty room had already been prepared. When I saw my sister-in-law again, she was nearly seven months pregnant; she had taken maternity leave to focus on her pregnancy.

After school started and I began my new university life, my activities, besides the campus, revolved around my brother's house. When I came home from school, my sister-in-law would tirelessly prepare a sumptuous meal for my brother and me. She also took special care of me in all aspects of daily life.

I was very grateful to my sister-in-law, feeling bad for constantly troubling her; especially since she was heavily pregnant and had limited mobility. Therefore, whenever I had free time, I would help with the housework.

One Saturday morning, my older brother was away on a business trip inspecting a factory in another city, so my sister-in-law and I were cleaning the house. Because of her pregnancy, my sister-in-law had to rest every now and then, and her forehead was already covered in sweat. She tried to cool herself down by shaking the collar of her loose t-shirt, but the sweat kept soaking through the clothes, making them sticky and clinging to her body. My sister-in-law told me to clean up afterward and went back to her room to change.

I quietly followed her and found that the door wasn't closed properly. Peeking through the crack, I saw my sister-in-law with her back to me taking off her t-shirt and shorts, leaving her only wearing a white bra and panties.

Looking at her back, I saw that her skin was smooth and fair. Although she was pregnant and her figure was slightly fuller, her rounded curves added to her mature beauty. She picked up a towel and carefully wiped the sweat from her body, then turned around: her breasts were firm and full, the two mounds of flesh seemingly about to burst out of her bra, swaying in front of her; her protruding belly was large and round, without a single wrinkle.

Looking at such a beautiful female body, my lower body slowly hardened and rose. My sister-in-law changed into a light brown dress and walked towards the door; I quickly slipped into the living room, continuing my work as if nothing had happened.

That evening, when my sister-in-law was taking a shower, I again tiptoed to the bathroom door. Through the door, I could hear the soft patter of running water and her humming a little tune. I turned my gaze to the laundry basket outside the door and saw my sister-in-law's clothes piled on top. I picked up her bra, feeling the slight warmth still lingering on it; and her panties, noticing a slight dampness at the crotch.

I took a sniff, and the distinctly feminine scent filled my nostrils. This was bad; my manhood began to swell and throb again. The water stopped in the bathroom, so I assumed my sister-in-law was getting dressed. To avoid being caught, I quickly put my things back and hurried back to my room. That night, I hid under the covers, fantasizing about my sister-in-law's naked body, and masturbated several times.

Several weeks later, on a Wednesday, I was busy at the library preparing for an impromptu presentation and didn't get back to my older brother's house until after 9 p.m. When I entered, I found the living room completely dark. My brother had to entertain clients and probably wouldn't be back until late. Where was my sister-in-law? "Where could she be so late?"

I wondered, walking back to my room with a puzzled look in my eyes. I saw light coming from her room. I pushed open the door and was shocked to see her bathrobe open, revealing only black jacquard underwear. One hand was on her ample breasts, and the other was inside her underwear, passionately caressing herself.

My sister-in-law was startled by my sudden appearance, letting out a gasp. She quickly pulled her bathrobe tighter, her face flushed, and she couldn't bear to look me in the eye. I was immediately embarrassed and kept saying, "I'm sorry, I'm sorry!" before hurriedly leaving the room.

A few minutes later, I composed myself and went to my sister-in-law's room. This time, I remembered to knock. I said, "Sister-in-law, I'm coming in!"

As soon as I entered, my sister-in-law was already wearing a light blue nightgown and leaning against the headboard. I bowed again to apologize for my earlier rudeness, and my sister-in-law quickly said, "It's okay, it's okay, actually... I was wrong too." She then lowered her head again.

Seeing my sister-in-law's blushing face, her already beautiful features looked even more delicate now. I stared at her, mesmerized, for a long time before finally looking away. I mustered my courage and asked, "Sister-in-law... you... you were... doing... that just now?"

My sister-in-law's body trembled, and she suddenly looked up. Her face flushed even redder, her lips trembled slightly, as if she wanted to say something but couldn't bring herself to speak. Finally, she turned her head away and nodded slightly.

I continued, "Sister-in-law, perhaps... you feel lonely?"

My sister-in-law paused for a long time before speaking, "Since marrying your brother, we've been inseparable and very happy. But after I got pregnant, he rarely touched me. Lately, he's been busy at work and is rarely home. We spend less time together as a couple, and I'm someone who doesn't like being lonely, so I have to..." She couldn't continue.

I said, "Sister-in-law, actually... it's really nothing!" As I spoke, I slowly placed my hand on her shoulder.

My sister-in-law gently pulled away, saying, "Look at you, you're up to no good. Actually, this is what I was going to do."

She took a bottle of lotion from a drawer in the low cabinet beside the bed. "This is for pregnant women,"

she said. "Apply a little every day to prevent stretch marks. My skin is so smooth thanks to this daily care." With that, she lifted her nightgown, revealing her fair, rounded belly. Just as she was about to open the cap, I stopped her.

"Sister-in-law, you work so hard usually, let me do it for you today!"

I took the lotion from her, opened the cap, poured some into my hands, and began to massage my belly. My hands gently massaged from top to bottom, from left to right, and then circled around my navel.

I asked my sister-in-law, "Is this okay?" She closed her eyes slightly and nodded, replying, "Mmm!" Her well-controlled pressure made her feel very comfortable. Her lips parted slightly, a faint smile on her face; she seemed to be thoroughly enjoying herself.

My fingertips felt the smooth, flawless, delicate skin, and a burning desire ignited within me. I restlessly reached my hand inside her lifted nightgown, but my sister-in-law stopped me. "Mmm! No!" Undeterred, I turned my attention downwards, caressing the triangle between my legs through my pajama bottoms. This time, I was again ruthlessly stopped. My sister-in-law said with a hint of annoyance, "I told you no!"

I was rebuffed and said dejectedly, "I'm sorry."

The massage ended hastily, and my sister-in-law turned off the light and went to sleep; I went back to bed and had a few more rounds of masturbation. I was filled with thoughts of getting intimate with my sister-in-law, but I had no opportunity. I could only wait patiently, and finally, the opportunity came.

One day, my brother went on a business trip for several days. That night, it was drizzling outside, and the dim streetlights illuminated the slippery alley, making it seem particularly deserted. I had just finished reading, closed my book, and lay in bed, but I couldn't fall asleep no matter how much I tossed and turned.

The air was completely silent, except for the rhythmic ticking of the alarm clock by my bedside. I glanced to the side and saw that it was past midnight. Suddenly, I felt thirsty, so I got up and went to the restaurant to get some water.

Having just finished drinking water, I glanced towards my sister-in-law's room. A thought struck me, and I tiptoed in. The streetlights shone through the window, illuminating my sister-in-law, who was already fast asleep. She lay on her left side, wearing a cream-colored nightgown, with only a thin blanket covering her abdomen, her arms tightly wrapped around a large pillow. My sister-in-law was indeed afraid of loneliness; seeking comfort, she hugged the pillow, as if she were hugging my brother as she fell asleep.

I quietly sat on the bed, my hand reaching towards my sister-in-law's fair, jade-like legs. Hmm! They still felt so smooth, as comfortable as silk. Holding my breath, I gently lifted the hem of her dress, extending it upwards to her thighs. I then straightened her bent right leg, keeping her left leg bent. With just that small movement, her dark panties were revealed under her skirt, enough for me to reach down and touch them.

My sister-in-law's pubic area was warm and soft, and I was enjoying touching it when I heard her let out a soft moan: "Mmm...husband...you're so naughty..." It seemed she was having a wet dream!

I moved my hand to her abdomen, gently stroking it through her nightgown. My sister-in-law's abdomen was perfectly rounded, and as I touched it, my penis began to swell. I continued to move upwards, and in an instant, I arrived in front of her full, large breasts. Since she wasn't wearing a bra, I could directly feel the excellent elasticity of her skin through the thin fabric, and her nipples were already hard from stimulation and teasing.

My sister-in-law was still fast asleep, her breathing as even as ever, as if unaware of what was happening. I was already itching to get my way, so I immediately pulled down my shorts, took out my swollen, enormous penis, and began rubbing it against her ample buttocks.

She must have felt a warm sensation coming from behind her; she woke up. She sat up, turned around, and saw a figure lying beside her in the darkness, and was startled. "Help…" she tried to shout, but I covered her mouth with my hand.

"Sister-in-law, don't be afraid. It's me."

Hearing my voice clearly, she exclaimed in surprise, "You...you...what are you doing here?"

I said, "Sister-in-law, I just got up to get some water and came into your room to check on you. But when I saw you sleeping, I couldn't control myself. You're so alluring..." As soon as I finished speaking, I kissed her pink neck and fragrant shoulders.

"You...you dare...I...I'm going to call for help!" she cried, twisting and struggling.

"Sister-in-law, I've really wanted to be with you for a long time...I don't know why, but I think you're the most beautiful woman in the world. The moment I saw your big belly and huge breasts, I..." I said, taking her hand and trying to shove it between my legs. She couldn't dodge in time and touched my burning hot and incredibly thick penis.

"No...no...I'm your sister-in-law...ah...no..."

At this moment, I slipped one hand inside her panties, rubbing her clitoris between her legs, while my other hand gently caressed her full breasts. I lowered my head and sucked and nibbled on her erect nipples.

My sister-in-law felt a surge of excitement; she had never experienced anything like this before. Usually, my brother would just push her down on the bed and start a passionate encounter, so she always thought that sex was a painful and agonizing experience.

"No...no...I...am...nine months...about to give birth..." My sister-in-law pushed against my body, but her legs involuntarily opened, and her vagina flowed with honey-like fluid.

I knew my sister-in-law wanted it, and I was incredibly excited. I turned on the bedside lamp. In the dim, yellowish light, my sister-in-law's cheeks were flushed, her full, rounded breasts hung low on her chest, and her rounded belly was high; her entire figure was incredibly beautiful.

I was mesmerized and couldn't help but whisper in her ear, "Sister-in-law...you're so beautiful...I want you..."

Before she could even speak, I pushed her down onto the bed without a word, pulled down her panties, aimed my penis at her honey pot, and quickly thrust it in. "Ugh...no...gently...gently..." My sister-in-law shook her head violently from side to side, pushing against my chest with both hands.

I increased the speed and force of my thrusts. The walls of her honey pot gripped my penis tightly; I hadn't expected that even after marriage, my sister-in-law still maintained a youthful tightness.

I said, "Sister-in-law...not bad!" She endured the thrusts, drenched in sweat, panting softly, "Mmm...ooh...so good..."

"Is it good?" I said again, "Then let's go!"

I continued to thrust forcefully inside her, her wanton moans becoming more frequent and higher in pitch. I knew we were both close to climax, and just as I was about to ejaculate, I suddenly pulled out of her. But I saw her moaning unsatisfiedly, grabbing my penis and actively pushing it into her vagina.

"No...don't pull out...I can't...take it...anymore..."

At her request, I thrust into her full body again, even harder than before.

"Ah...my stomach...it hurts so much...ah..." she cried out.

Ignoring all that, I picked her up and thrust into her violently, her large breasts swaying up and down.

My sister-in-law, supporting herself on my shoulders, ignored the baby rolling around in her womb, moaning loudly, "Ah...so swollen...ah..." A surge of intense pleasure coursed through her, and she abruptly lifted her lower body, her large belly protruding as she faced me. After several rounds, I finally ejaculated.

My sister-in-law was exhausted, almost fainting. Suddenly feeling the urge to urinate, she struggled to her feet, one hand supporting her aching lower back, the other cradling her heavy belly, slowly walking with a swaying gait.

Seeing this, my penis hardened again. My sister-in-law felt her belly was swollen and much larger than before. But she didn't seem to care. She slowly walked into the bathroom, supporting her back with her hands and leaning against the wall, barely managing to sit on the toilet. I couldn't resist any longer. As soon as my sister-in-law got up to flush, I hugged her from behind, grabbed my penis, and thrust it into her.

"Ah...no...no...my stomach...is so bloated...ah..." my sister-in-law said, but she still obediently raised her buttocks high, allowing my penis to penetrate even deeper.

"What's wrong? Are you going into labor?" I supported the bottom of my sister-in-law's abdomen, clearly feeling it drop slightly and become larger and harder.

"No...just now...my stomach...pressed...against the wall...it hurts..." she gasped for breath, clutching her large belly, as if about to collapse to the ground.

"Sister-in-law, let me help you to bed," I said quickly.

"No...I...can't walk...my stomach hurts so much...ah..." My sister-in-law squatted on the ground, clutching her stomach and groaning. I had no choice but to struggle to lift her up, half-dragging, half-pulling her to the bed.

I carefully laid her down, placing a pillow under her waist. This made her already protruding belly appear even larger, making her body even more sexy; from her feet, you couldn't see her face at all. Due to the intense activity just now, a little milk had seeped from her nipples. My heart raced, and like when I was a child nursing, I suddenly pounced on her, taking her nipple in my mouth and sucking hard.

"Ah...ah...you...you be gentle...I...can't take it..."

With my sister-in-law's soft cry, my penis became hard again. I rubbed my penis against my sister-in-law's stomach and breasts, and on a whim, I placed it in the deep crevice of her ample breasts, asking her to squeeze it between her breasts with her hands. She complied shyly, and my penis moved back and forth contentedly.

A saying I'd heard somewhere flashed through my mind: "Nothing tastes better than dumplings, nothing's more fun than your sister-in-law." The latter part seemed particularly apt in this situation.

As the pace quickened, I approached the point of ejaculation. Finally, a stream of hot semen shot out, landing on my sister-in-law's breasts, some even splashing onto her face. Seeing this, I wickedly put my penis to her mouth and said, "Lick it clean."

My sister-in-law initially resisted, but couldn't resist my advances, so she opened her mouth and took it in. I hadn't expected her "blowjob" skills to be so good; she controlled the pressure perfectly, making me feel incredibly good, and I soon ejaculated into her mouth. I was too embarrassed to ask her to swallow it, so I handed her some tissues and let her clean herself up.

Thinking we'd had enough, it was time to wrap things up. So I parted her legs and launched my final assault on her vagina. Amidst her moans, we both reached orgasm, and I ejaculated again before reluctantly withdrawing…

I lay beside her, both of us panting. I noticed tears glistening in her eyes; I wondered if she was crying because she felt ashamed of doing this behind her husband's back, or because she hadn't had such a satisfying time in a long time and was crying tears of joy. I pulled her into my arms and said, "Sister-in-law, are you happy? My kung fu should be just as good as your brother's, right?"

My sister-in-law blushed, lightly punched my chest, and said softly, "You naughty boy, how annoying!" Then she buried herself in my arms again. I knew I had succeeded…

A few weeks later, my sister-in-law gave birth to a boy, my brother became a father, and I became an uncle. However, from then on, my sister-in-law and I developed a tacit understanding: when my brother was home, she was his wife, my sister-in-law; but when he wasn't home, I would take over the place. My sister-in-law said that before I finished my studies and left their home, she wanted to enjoy life with me, because a completely new experience awaited her…

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My pregnant sister-in-law

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