[My brother-in-law let my sister sleep in my room] (Full text)

Author: Bamboo Bell
Posted on the forum on 2018/4/21
First published: Yes
Word count: 11838
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I only intended to write about 3000 words. Unexpectedly, I couldn't stop once I started. It's over 10,000 words again.
I haven't been feeling well lately, and this piece was a struggle to finish. I really don't have the energy to proofread for
typos. Please bear with it. Thank you!
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If newlyweds are inseparable and have passionate sex every day, that's normal. But
have you ever seen a couple who have been married for three years but treat sex like a daily meal?
Yes! They're right in front of me. That's my sister and brother-in-law.
I live at my sister's house for convenience while going to school. It's only a 5-minute walk from my sister's house to school.
My brother-in-law is of medium build, thin and not at all muscular. However,
his penis is exceptionally thick, like my clenched fist and arm. He's incredibly
horny when it comes to sex, shoving his penis into my sister's ass with incredible force.
Although he's not my sister's prince charming, it's probably this huge penis that won her
heart. Every night they're up very late, fucking my sister until she begs for mercy. Often, she'll
be limping the next morning.
From my description, you can probably guess that I often peep at them having sex.
This day was Sunday, no school. After breakfast, I was studying in my room.
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Suddenly, I heard a "Ah—", and I knew they were starting again. So, I put down my pen and sneaked
to their room.
"Ah—hurry up—if you keep going—you'll be late—oh—," my sister gasped
.
I peeked through the crack in the door, which wasn't closed tightly. My sister was leaning over the computer desk, her skirt pulled
up to her waist, revealing her round, snowy buttocks and fair thighs. Her buttocks were sticking out high, and her thin black panties
were pulled down to her calves. Especially noticeable was the thick pubic hair between her legs. And the vaginal fluid overflowing from her vulva was being
squeezed out of my sister's body by the big penis, flowing down her thighs and wetting my brother-in-law's swaying scrotum.
My brother-in-law was dressed neatly on top, in a white shirt, tie, and suit jacket. But on the bottom, his underwear was hanging on
his knees, and his trousers were about to fall to the ground, dangling from his belt. With each sway of his body, the belt buckle made a crisp
sound.
My brother-in-law's large penis was thrusting violently into my sister's vagina, his scrotum slapping against her snow-
white buttocks with each stroke. His hands, initially on her buttocks, slowly moved upwards, gripping her slender
waist, thrusting her body against his genitals, making the sounds of their bodies colliding even louder. At the same time, my sister
's moans became even more seductive.
Such a symphony of lovemaking, even if I were in my own room, I could hear it.
Didn't they consider my feelings? They really are a pair of people driven mad by love!
My brother-in-law asked, "Does this feel good? Want it harder?" My sister
gasped, "Oh—ah—good—so good—husband—you're so good at it—this is
good—harder—it'll break down down there—ah—"
My brother-in-law chuckled wickedly, "But I heard that when a woman says no, she actually means yes."
With that, he suddenly thrust even harder. The sound of flesh slapping was so loud that
it echoed in the room.
The sudden stimulation caused the older sister to scream, "Ah—! Husband—bad husband—stinky husband
—my lower body—really can't take it anymore—it's going to break—please—slow down—ah—I'm going to die—
!"
As she spoke, her legs trembled violently, and a large amount of fluid gushed from between her legs, flowing down her two white thighs and
forming a large puddle on the floor.
The brother-in-law smugly helped his sister up and placed her on the bed, smiling as he said, "You said no, but you're so turned on you've wet yourself!
Isn't your big cock amazing?"
The sister glared at her brother-in-law, weakly slapping his large penis, and said, "You bad thing! I feel like
you've swollen me up again! I can't wear underwear anymore. I'll have to go to work naked again! Do you know
how uncomfortable it is not wearing underwear? It's so cold and I feel so insecure."
The brother-in-law leaned down and pressed against his sister's body, saying, "Since we're not wearing underwear anyway, I'm even less polite.
One more time."
The sister cried out, "No! No! Really! Really! Again! It'll really break down!
Ah—you bastard—I'm going to die—"
Before she could finish, the brother-in-law, with his fierce member, began to assault her again. While the sister verbally
protested, her expression of enjoyment and her ecstatic moans betrayed her.
My brother-in-law roughly ripped off my sister's dress. Now, my sister was completely naked,
lying on the bed, at his mercy. Her large, full breasts
swayed violently with each thrust.
"Ouch—!" my brother-in-law roared, quickly pulling out his penis and vigorously stroking it with his hand, ejaculating
. The first stream landed on my sister's breasts. One has to admire the power of his large penis.
After he finished, my brother-in-law had to go to work, and I had to go back to my room. It wouldn't be good if he found out!
How could I face my sister then? But, oh, my sister's vagina is so beautiful!
My sister didn't emerge from her room until long after my brother-in-law left. Her hair was disheveled, her nightgown was wrinkled, and she walked
with an unnatural, awkward gait. As she sat on the sofa with an apple, she let out a soft groan and frowned
. After resting for a while, she went to work. Today, my sister will probably be late again. My sister didn't get the perfect attendance bonus last month
, and she probably won't get it this month either.
Looking at the sofa where my sister had just sat, it was damp. She really wasn't wearing underwear! I brought
my nose close and smelled it. This wasn't the first time I'd smelled my sister's vaginal fluid, but every time , her
pungent scent excited me. I had to masturbate a couple of times to soothe my stubborn penis.
Sometimes I wondered, my brother-in-law tosses and turns to my sister day and night, working on her belly, but why didn't her belly 　　change
at all? They weren't using condoms! Could it be that my sister
was taking birth control pills? But that's so bad for her health!
********** 　　... It turned out that when my brother-in-law went to pick up my sister from work, he arrived a little early and caught her 　　colleague playfully groping her buttocks. 　　My brother-in-law immediately flew into a rage and caused a scene at my sister's company. The colleague was beaten black and blue, and 　　my brother-in-law himself was also injured. On this point, I agree with my brother-in-law's actions. Anyone who dares to take advantage of my sister deserves 　　to be beaten to a pulp. 　　My sister's anger towards my brother-in-law stemmed from this incident; she became the subject of gossip. 　　It could easily become, "Caught cheating on her husband with a male colleague, the lover was 　　beaten to the ground by his wife. It was a terrible ordeal!" How could she possibly stay at the company after that? 　　They've been giving each other the cold shoulder for a week. Just as I was at a loss and preparing to ask my parents for help, I heard 　　sounds of lovemaking coming from my sister and brother-in-law's room. The quiet night was filled with the loud "slap slap" of flesh colliding and my sister's 　　moans of pleasure. Unlike usual, this time the cries were filled with the 　　release of pent-up frustration. It was like someone who hadn't eaten for three days wolfing down a meal, or like a farmer weeping with joy after a long drought 　　. 　　In short, my sister and brother-in-law didn't settle down until late at night. Only then could I finally fall asleep. 　　A good portion of the tissues by the bed were gone. 　　However, my brother-in-law is a very chauvinistic man. He often bosses my sister around. Even when she 　　goes out with her best friend, he has to ask about it before he feels at ease. 　　That night, I got up to pee and passed by their room, hearing them arguing. I listened carefully. 　　Sister: "Take it away! No!" 　　Brother-in-law: "Your period is over, isn't it? Look, you didn't even use a panty liner." 　　Sister: "I've already made you come twice! Can you stop being so unreasonable?!" 　　Brother-in-law: "You mean your period isn't over yet? Then explain why you didn't use a panty liner 　　!" 　　Sister: "It's almost over! It should be finished tomorrow! Can't I just wait one more day? I'm not using one because 　　the flow is very light, so it's unnecessary. Besides, do you know how uncomfortable it is to wear a panty liner? Of course, I'll 　　avoid using one if I can!" 　　Brother-in-law: "That's just making excuses. It's over, it's over. And you say the flow is light and you don't need it? We did it today, 　　what's the problem?" 　　Sister: "How can you be like this? Do you think I don't want to do it?!" 　　Brother-in-law: "I think you just don't want to do it, you're deliberately making excuses!" 　　Sister: "Can't a grown man stop being unreasonable?" 　　Brother-in-law "So what if I'm a grown man? I'll show you what a man I am. Since it's inconvenient to do it, let's sleep in separate beds. 　　I don't want to do it with you while I'm half asleep." 　　Sister: "Separate beds?! Do we have any other beds in our house? Are you telling me to sleep on the floor or the sofa? Huh?! You bastard 　　!" 　　Brother-in-law: "Who said we don't have any? Yes—your brother's room has a double bed. Go sleep with your brother." 　　Sister: "How old is your brother?! How can I sleep with him?!" 　　Brother-in-law: "What's wrong with that? He's your own brother, not some other man. What's there to care about? Besides 　　, I don't mind, why should you?!" 　　Sister: "You said it!" 　　Brother-in-law: "I said it!" 　　Sister: "Don't think I'm afraid to go!" Brother- in-law 　　: "Go ahead!" 　　Sister: "Don't regret it!" 　　Brother-in-law: "I'm afraid of you! He's your own brother, not some other person. What do I have to regret? Don't bother coming out!" 　　Then came the sound of getting out of bed and putting on shoes. I quickly went back to my room, turned off the light, and lay down. 　　I thought, is my sister really going to come to my room and sleep with me?! Could it just be empty words, just for 　　show? After all, my sister and I have never slept together in my memory. 　　Soon, I heard the door to my sister's room open, followed by my door being pushed open and then closed. 　　With a creak, my sister sat down on the edge of the bed. I held my breath. But after waiting for a while, my sister didn't make any 　　move. 　　After waiting a while longer, my sister took a deep breath, as if she had made up her mind. She actually crawled into my 　　blanket. I was so scared that I didn't dare to move. I was both surprised and delighted. 　　It was indeed a double bed, but I always slept alone. Tonight, two people were sleeping in it, me and a 　　beautiful woman, my beautiful sister. The bed, which I could roll around in freely, became so crowded. I was even 　　afraid to turn over, afraid of touching my sister. Actually, I wanted to touch my sister's body, even hold her in my arms 　　, but I just didn't dare. 　　My sister was facing me, lying down, her breath sweet and fragrant, brushing against my shoulder. So sweet! I longed to lean in 　　and kiss her face, to hold her in my arms. But I couldn't! I turned away, trying to avoid facing my sister, to 　　reduce my impure thoughts. But I still couldn't sleep! My sister's breath tickled my back! My penis 　　was already hard! 　　This was probably the first time I'd ever slept in the same bed with a young woman. The bed was filled with her fragrance. When 　　would I have a woman of my own, sleeping with her like I was with my sister now? And then, like my sister and brother-in-law 　　, making love shamelessly every day? 　　It would be a long time before I could! 　　Suddenly, my sister pressed against my back, her soft, full breasts pressed tightly against my body.

Even through two layers of pajamas, the feel of her flesh was amazing. My semi-erect penis immediately twitched excitedly
twice. What a treat! My sister's breasts feel so good! I really regret turning my back to her; if only we
were face to face!
But what surprised me even more, or rather, what happened next, was even more surprising.
My sister "slapped" her hand onto my waist. After a while, her little hand magically
lifted my pajamas, and I rubbed them back and forth against her chest, even touching my nipples. It made me both
itchy and excited, and my penis became completely erect, creating a big tent in my pants.
Then, her little hand slid down, groping around my waist. She mumbled something, indistinct and hard.
The groping went lower and lower, eventually reaching inside my underwear and touching my hard penis. My body involuntarily shuddered!
So good!
My sister's hand gripped my penis, kneading it back and forth, sometimes loosely, sometimes tightly. I felt my glans leaking fluid,
sticky and wet.
"Ah—," I couldn't help but moan in pleasure. I quickly tried to hold it in. But the increasingly heavy breathing
and the whimpering sounds from my nose were unbearable.
If I could tolerate my sister kneading my penis, her hand then moved to my scrotum, playing with
my testicles.
"Ah—oh—," I cried out, both nervous and excited. The tension of having my testicles, a man's most vulnerable spot
, touched was unimaginable. But the feeling of my sister kneading them was so wonderful! So
sweet, but I loved it!
My sister's two tender legs wrapped around my thighs, her hips rubbing and moving back and forth against my thighs. My sister seemed
to be getting aroused, letting out soft moans. Her small hands returned to my penis, stroking it
.
Was my sister awake now? Or sleepwalking? Or perhaps she mistook me for her brother-in-law? But I couldn't
think straight; my mind was completely consumed by the pleasure from her penis. Who cares! As long as she could give me a handjob and
make me feel good, that was enough!
My sister pressed closer and closer to my back, her small mouth moaning and panting right next to my ear. Her cries were so soft
and alluring, as if I were the one stimulating her vagina instead of her stroking my penis.
My sister writhed and twisted against me. Before I knew it, our pajamas had rubbed down to our armpits. Her
two large breasts were pressed against the back of my hands, the pleasure almost making me ejaculate. Her two small nipples rubbed
back and forth against my back.
Slowly, I felt my legs getting wet, increasingly wet. It was my sister's vagina rubbing against my thighs
, so much vaginal fluid. I wanted to reach out and touch her vagina, but I didn't dare. I was afraid she would escape, and
I wouldn't even have this pleasure anymore.
"Aww—," a throbbing sensation in my lower body, I ejaculated! "I ejaculated in your crotch!" My sister continued stroking until
she squeezed out the last drop of my semen before withdrawing her hand. However, her lower body was still clamped around my thigh,
rubbing against me from time to time.
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The next day, when I woke up, my sister was gone. I went outside and saw her preparing breakfast
. She smiled slightly at me.
It seemed that my sister and brother-in-law hadn't reconciled, and they weren't talking. That night, my sister came to my room to sleep again.
Would my sister still give me a handjob? I was looking forward to it. So, tonight I didn't turn my back to my sister. I was even more looking forward to
being naked face to face with her.
Soon, my sister touched my shoulder and then moved down to grab my hand. I was sure that my sister
was awake at this time.
This time, my sister didn't touch my body or put her hand inside my crotch, but just grabbed my hand.
What was my sister going to do? What did she want my hand for?
My sister seemed to be hesitating. Then, slowly, she took my hand, lifted her nightgown, and pressed it against her
genitals. Just like yesterday, she wasn't wearing any underwear; it was empty. It seems my sister doesn't have the habit of sleeping with underwear.
Maybe it's inconvenient when she's having sex with her husband. They do it so many times a day; it's so inconvenient to take it off and put it back on.
My sister's genitals were hairy, and her crotch was already wet, soaking her pubic hair. I
couldn't resist giving it a squeeze; it was plump and so soft.
My sister turned over and lay flat on her back, opened her legs, and pressed my fingers into her vulva. It was warm, wet
, and sticky, and my fingers felt like they were being electrocuted. How amazing, this feeling... so this is my sister's vagina,
the paradise that her husband tirelessly cultivates every day. It felt so tender!
The two pieces in the middle must be her labia minora; I've peeked at them from outside my sister's bedroom door more than once. As
my brother-in-law's large penis thrust in and out, I was turned over and pushed around. Unconsciously, I
pinched one of my labia between two fingers. Unexpectedly, this elicited a seductive moan from my sister.
My sister is so stubborn! She clearly wants it to death, but she can't bring herself to admit it, she won't give in. She'd rather use her own
brother's hand to satisfy her than easily make up with her brother-in-law
! My sister is really something, there's a big penis right next door, yet she uses her brother's fingers instead. But
then again, my brother-in-law is really something, he penetrates my sister's vagina more than once a day, he must be craving it now too.
I imagine he's not having an easy time alone in bed right now. Maybe he's secretly masturbating. Why
can't he apologize to my sister? Is apologizing to your wife so shameful? This couple, what can I say!
Their arguments and cold war have benefited me, allowing me to touch my sister's vagina, something I never even dared to dream of. Although
it's a bit inappropriate to think like this, how can fingers compare to a penis to quench thirst! Sister, if your husband's
penis isn't working, there's still your brother's!
My sister grabbed my finger and touched a small spot at the top of her vulva, gently rubbing it in circles. I
quickly realized what it was—my sister's clitoris. I'd seen in porn that a woman's clitoris is very sensitive
; after arousal, stimulating the clitoris can bring a woman to orgasm, even causing her to squirt, just like the time my brother-in-law made
my sister urinate.
So, I took the initiative, thinking about what I'd seen in porn, and started stimulating my sister's clitoris. Sister...
My sister felt my hand move on its own, and her grip loosened, letting me do as I pleased. I
carefully rubbed it with my index finger, gently and tenderly. Her clitoris swelled more and more, gradually revealing itself.
At this moment, the grinding of my finger on her clitoris changed to vibration. My sister's body trembled violently, and
she moaned with pleasure, her voice somewhat lewd.
Perhaps to repay me for making her feel so good, or perhaps she was aroused, my sister lifted my nightgown, put her hand
inside my pants, and firmly grasped my penis, yet gently
stroked the glans, shaft, and scrotum. Only when my glans became wet did she begin to stroke it with that lubrication.
I wasn't going to be outdone. Although I hesitated, I mustered my courage and reached out my fingers to explore my sister's
vulva. My fingers parted the labia minora, and the tip of my middle finger gently slid between them. I quickly located
the entrance to her vagina, because every time my finger brushed against it, it would twitch and relax slightly.
At this moment, my sister's breathing became more rapid, her waist undulated, and her hips and groin twitched unnaturally
. My finger was already aligned with her entrance, even probing in a little bit—or rather, her
vagina actively took it in, sucking on my fingertip.
Just as I hesitated whether to actually insert it, my sister suddenly pressed my hand down,
forcing my middle finger into her vagina.
"Ah—so good—oh—so good—," my sister cried, pulling my hand in and out.
My middle finger moved in and out of her vagina like this. My middle finger was tightly enveloped by her vagina; it was
hot, wet, tight, and sticky, the fluid inside very viscous.
I suddenly remembered the reason my sister and brother-in-law had argued yesterday—wasn't it because my sister's period hadn't ended yet? Was it appropriate to use
my hand to penetrate like this? The sticky discharge from my sister's vagina was probably menstrual fluid, not the kind of vaginal
lubrication I'd expect from sex.
Since she was already moaning, it wasn't so awkward for me to ask. So, I whispered,
"Sister, it's so sticky inside! Is your period still going on? Is this okay? Maybe we should stop,
I can hold it in a little longer—"
Before I could finish, she turned and kissed my lips, silencing me.
"You little rascal! Were you eavesdropping on your sister?"
I said guiltily, "No—no!"
She flicked my forehead and said, "Your face is so red, and you still say you didn't! Do you think I
saw your eyes through the crack in the door? Or that you don't know what that puddle on the floor is?" Oh
my god! So she knew all along! I wanted to disappear into the ground!
"I—I—I—"
Seeing my embarrassment, my sister burst out laughing. "What a cute little virgin! You're still
worried about whether your period is over. If only your brother-in-law were as gentle and considerate as you! Don't worry
, my good brother! A woman's vagina is like this right after her period."
Looking at my sister's smiling, gentle, and kind face, I got carried away and boldly said, "Sister!
I can totally feel your body's thirst, especially down there! Let me relieve your itch and
thirst!"
As soon as I said it, I regretted it. Whether my sister helped me masturbate or I penetrated her vagina, it
wasn't considered intercourse. It was just a game of flirting with desire.
Would my sister be angry if I made such a sudden request?! My middle finger inside my sister's vagina stopped. I didn't know whether to continue thrusting or pull it
out. How embarrassing!
"Little brother, why did you stop! Are you in such a hurry to stick your cock into your sister's pussy?"
She said, pulling my other hand up to lift her nightgown higher. She then pressed my hand against her large
breasts, kneading them, and said, "If you want to relieve my itch, you have to take the lead in foreplay. Little brother! Sex
isn't just about sticking your cock into my pussy."
Her voice was so wanton, as seductive as a prostitute in a TV drama. She cupped my face in her hands and
kissed my lips. Her tongue slipped into my mouth, slippery and teasing my tongue, teeth, and lips.
She played with them, licked them, and bit them. I didn't know if I was satisfying my sister, or if she was playing with me.
"The feeling of a virgin is really different! Little brother! So innocent! So interesting! I like it so much!"
After saying that, she continued kissing me, not only my lips but also my neck and shoulders. She even
sucked and licked my ear, gently biting my earlobe with her teeth, and sticking her little tongue into my ear canal
. It made me feel incredibly uncomfortable, yet strangely pleasurable, and even more excited.
"Sister—Sister—," I cried out passionately, my voice trembling, a mixture of helplessness and longing—what a contradiction
! My lower body grew increasingly aroused and hard, incredibly excited, yet I felt no urge to ejaculate.
I vaguely felt that my sister's little hands were no longer enough to satisfy my penis. I needed my sister's vagina.
At this moment, all I had was desire. Whether it was my sister or another woman beside me, as long as she was a woman,
it didn't matter. What I needed now was sex! The mating of a man and a woman! Sex!
"Look at that face of yours, like you've taken the medicine! Want it? I'm personally teaching you how to
make love with girls! Don't be so hasty. If you're not comfortable, will girls still want to do it with you next time? Right
?"
As she spoke, her little hands roamed over my body like a gecko. Her nails deliberately scratched my nipples
, sliding back and forth between my chest and lower abdomen. Her teasing made my breath ragged, and I gasped wildly with pleasure. My upper
body felt numb and itchy, and my body trembled, not knowing whether I was trying to escape or respond to her fingers.
"Want to see my flower heart?" she said, gently biting my earlobe.
"Mmm—yes—" I replied with a soft moan.
"Come on! You've seen my little hole from outside the door before, haven't you? This is the first time you've seen it this close. Come
on, look, your little hands are melting my little hole!"
Her lewd teasing made my heart leap with excitement. I quickly grabbed my phone and turned on the flashlight
. He got up and looked at his sister's genitals.
My sister took off her nightgown and lay naked, her legs spread wide in an M-shape, allowing me to feast my eyes. I
didn't know why she was being so bold and wanton today, but for me, this was a golden
opportunity. I couldn't back down. The opportunity was fleeting.
My sister's pubic hair was so black and thick. Her clitoris, red and about the size of a small soybean, shyly peeked out
. Her labia minora resembled a pair of butterfly wings, so beautiful. Her entire vulva was a vibrant red.
I bent down, wanting to lick the nectar from her vulva, but she stopped me.
She said, "My period just ended, so sex is fine. But the smell is still awful. I really can't
."
I couldn't lick it! I was a little disappointed. So, I inserted my index finger into her vulva and began thrusting in and out quickly.
My index finger gripped her clitoris, vibrating and grinding with each thrust.
"Ah—so good—so good—so good—little brother—good little brother—", my sister cried out,
grabbing and kneading her breasts haphazardly.
Such rapid thrusting couldn't last long; soon her arms ached and went numb. I stopped and
said to my sister, "Sister! My hands are tired! Can I use my penis instead? Is that okay?"
My sister nodded frantically, saying, "Quick—quick—I want—anything—quick—put it in me
—fuck me—"
I was just waiting for my sister's approval! Hearing my sister's urgent plea, I immediately satisfied my lewd
sister. I held my penis and climbed on top of my sister, searching for the location of her vagina. Thinking I had found the right spot, I couldn't insert
it. My hard penis just pounded around in my sister's slit.
Finally, my sister couldn't wait any longer and grabbed my penis, placing it at the entrance of her vagina. I lowered my hips, and
with a "plop," I thrust into my sister's lewd vagina. Before I could savor the sensations, my lower body began
to thrust involuntarily. Making love really doesn't need teaching; it's just a matter of instinct.
"Slap—slap—slap—," I rode my horse inside my sister's burning pussy. The pleasure
was incomparable to masturbation. Completely different. My sister's tight pussy was irresistible.
"Ah—ah—so good—brother—harder—yes—that's it—ah—,"
my sister moaned ecstatically. Her hands scratched wildly at my back. Her nails drew lines across my back
, burning and painful. But this only excited me more! Is this what wild sex with a woman is like?!
So exciting! So wild!
I asked, "Sister! Is it comfortable like this? I'm going to put it all the way in! Is that okay?"
My sister was a little surprised: "You didn't put it all the way in? I feel like it's already pushed all the way in! You're not
kidding me, are you?"
I said helplessly, "Sister, didn't you notice when you were stroking me? My penis isn't as
thick as your husband's, but it's longer."
My sister nodded and said, "That's true! Now that you mention it, I noticed, so I swung my arms
more when I was stroking you. Put it in slowly. Just don't hurt my little hole."
I said, "I know! I'll be careful."
My sister said in a seductive voice, "Let your sister taste what it's like to have a longer, bigger penis!"
I straightened up and used my body weight to carefully and forcefully push the last part in. With each thrust, I
pushed it in a little more. Slowly, my entire penis was inside my sister's little hole.
Occasionally, my glans would touch something inside her vagina that resembled a small mouth, sucking on my glans.
When I pulled out, there was a soft "snap"—it was so wonderful!
Watching my sister beneath me, her eyes glazed over, as if lost in a rain of mist, experiencing ecstasy, my male
pride surged.
With each increasingly frenzied thrusting, more and more of her vaginal fluid gushed out, soaking
my scrotum and pubic hair. The impact of our bodies also sprayed the fluid everywhere. Dots of it were everywhere—
on my stomach, on my sister's buttocks, sticky and all over.
"So beautiful—I feel so good—brother—you're so good at this—," my sister cried out lasciviously,
holding my head in her hands and kissing me frantically. More accurately, she was biting my lips.
I knew that her almost frantic behavior meant she was about to climax. I deliberately
pulled out my entire penis except for the glans when I pulled out, then quickly and forcefully thrust it back in. This way, it was easy to touch
that little mouth inside my sister's vagina again, pressing against it, my glans being sucked in, then "pop" it was pulled away. So good! What a
wonderful feeling!
I repeated this more than ten times, and my sister's body trembled as if she'd been electrocuted. Her mouth opened wide
, panting, writhing, as if she were saying something, but no sound came out.
"Ah—brother—your penis—is so powerful—I'm going to die—," my sister
screamed hoarsely, "Ah—ah—harder—faster—ah—"
I was startled by my sister's final hysterical scream! But I fucked my sister even harder.
Because I knew my sister had reached her climax. She was being fucked to heaven by my big penis.
At that moment, I felt myself reaching my climax and asked my sister, "Can I ejaculate inside?"
But my sister was at the peak of her sexual desire, and she cried out incoherently, "Don't ask me. Anything!
Ejaculate wherever you want! Mouth, vagina, breasts, whatever!"
I thought about it; this was my first time having sex, so of course I had to make it perfect. The most authentic way was
to ejaculate inside—in my sister's vagina.
Having made up my mind, I began to thrust vigorously, sprinting towards ejaculation.
"Ah—I'm going to cum—cum inside my sister's vagina—ah—"
My penis throbbed, deeply ejaculating my first load of semen into my sister's vagina.
"Mmm—oh—so hot—my brother's semen is so hot—it feels so good in my sister's vagina—",
my sister moaned lazily after her orgasm.
I lay comfortably on top of my sister until my penis went limp and was squeezed out of her vagina. My sister pushed
me away, covered her genitals, and ran to the bathroom.
I saw my semen dripping between my sister's fingers.
I loved the sight of my naked sister, her crotch dripping with her younger brother's semen! The next day, I 　　woke up with my naked sister in my arms. I rolled over and pressed myself against her body, ready for our 　　morning 　　sex! Life was 　　so
beautiful 　　!
****************
... Sex 　　doll? Or human masturbation device? 　　Sigh! Forget it! Logically speaking, my sister and brother-in-law are husband and wife, a legally recognized couple. Let's just consider 　　what happened between my sister and me as a one-night stand. 　　Putting everything else aside, she's my sister! I should be happy that she and her husband have reconciled. 　　But I'm just a student now, living at my sister's house. What can I give her? What can I expect 　　? The pleasure with my sister was an unexpected and terrifying experience. Wasn't it?! 　　So, life returned to normal. My sister was still my sister, and I was still my brother. 　　But one late night, suddenly, a violent storm broke out, with thunder and lightning. My sister ran into my room in a panic 　　. 　　I felt my sister's body trembling under the covers. Worried, I asked, "Sister, what's wrong?" 　　She hugged me tightly, her voice trembling, "Your brother-in-law is working overtime. The thunder woke me up! 　　I'm so scared!" 　　I quickly stroked her hair, saying, "Don't be afraid! Don't worry! Your little brother's here!" 　　She nodded. Slowly, her trembling subsided. 　　I reached for the bedside lamp and turned it on. 　　Suddenly, a thunderclap boomed. Startled, my sister jumped even tighter, clinging to me even more. I 　　held her tightly too, trying to give her as much security as possible. 　　A few minutes later, the thunder faded, the wind subsided, and a torrential downpour began, 　　pounding against the windowpanes. 　　The thunder stopped, and my sister showed no sign of leaving. Of course, I wouldn't be foolish enough to send her back. She 　　still clung to me tightly, still trembling slightly with fear. When her breathing calmed down, I looked down 　　and saw she was asleep! 　　Oh dear! I was disappointed. Nothing would happen tonight. 　　But things changed the next morning. 　　I was awakened by my sister's hot lips. 　　She whispered seductively in my ear, "Good little brother, don't you miss your sister's body? Come on! 　　Come and love your sister!" 　　These were the most thrilling words I had ever heard. My sister hadn't forgotten me; she knew how much I 　　longed for her body. 　　I roughly tore off her nightgown, leaned over and pressed myself against her, licking and teasing her alluring 　　little hickeys. I licked, sucked, ground them with my lips, and tore at them with my teeth. 　　"Oh—ah—," she moaned softly. 　　She opened her legs, indicating that I could take over her lower body. But I hadn't had 　　enough of her breasts yet, so I focused on playing with her large breasts. 　　As I played with her breasts, I exclaimed, "Sister! Sister! Your breasts are so beautiful! I—I love them!" 　　My sister gasped, "Ah—brother—down there—down there—faster—faster—" 　　I shook my head, "But I haven't touched your breasts enough yet." 　　My sister said anxiously, "From now on, you can touch my breasts however you want. Faster—faster, do it to me—faster 　　—I can't take it anymore—" 　　My sister begged me while she took the initiative to grab my penis and put it into her vagina. She cried out, 　　"Fast—faster—put it in—" 　　I wanted to tease my sister, but I was afraid she would get angry and stop talking to me. That would be a loss. 　　When my sister saw that I didn't put it in immediately, she got anxious! She got up and pushed me onto the bed, climbed on top of me, pressed 　　me down, and straddled my waist. Suddenly, I felt like I was going to be raped by my sister. 　　My penis was in my sister's hand. My sister straightened up and shoved my penis into her crotch. Then 　　, she slowly and powerfully sat down. I looked up and watched as my penis was slowly 　　swallowed by my sister's vagina. 　　Oh my god! This feeling! It's completely different from the last time I fucked her! Especially the visual impact 　　! My sister's swaying, alluring figure goes without saying, but just her pair of big, jumping breasts 　　are visually striking. What's more, by just raising my head slightly, I could clearly see my penis 　　thrusting in and out of her vagina. The opening and closing of her vaginal opening, the fluttering of her labia. So cool! 　　Watching my sister panting and frantically manipulating my penis, I also thrust my hips to match 　　her thrusts. Her juices flowed continuously from the gap between her vagina and my penis. More and more. 　　Suddenly, my sister twisted her waist wildly, moaning, "Ah—oh—" 　　I quickly thrust again, reaching orgasm with her. I offered my pent-up semen to my sister 　　. Silently, I thought: "Slutty sister!" Let your big-dicked brother fuck you until you're pregnant! 　　My sister lay on top of me, savoring the wonderful feeling of orgasm. She didn't even notice the semen sloshing out of her vagina. 　　Until our stomachs were rumbling. 　　**************************************************************************************** 　　After that, every day after my brother-in-law left, my sister had another activity—making love with her own brother. 　　The bathtub, the toilet, the dining table, the sofa, the kitchen—everywhere in the house bore the marks of our lovemaking. 　　At my suggestion, we watched porn and tried to imitate the positions to enhance the experience. Gradually, we became unsatisfied.

I started imitating their movements and began buying all sorts of props to enhance the experience. My sister became increasingly uninhibited, and I started to worry—
would I turn her into a slut if this continued?!

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