My wife and brother-in-law were visiting; I was busy planting seeds for my sister-in-law.

page views:1 Publication date:2023-03-23

It was a summer evening last year. My wife came home, hugged and kissed our son, and said worriedly, "My younger sister's test results are in. She's fine, but her husband is impotent—he has no sperm."
My sister and brother-in-law graduated from university and came to Shanghai a year ago, getting married the same year as us. They were busy making a living and didn't have time to think about having children. Until a year ago, when their careers gradually stabilized, they started trying to conceive while keeping an eye on the housing market. But housing prices kept rising, and they couldn't conceive any more easily. In the spring, they finally made a tough decision, bought an apartment, and went to the hospital for a checkup.
My wife said that after her younger sister came back, she hugged her and cried her heart out, saying with tears in her eyes, "Sister, give me your son, and you and your husband can have another one." "What?" I was shocked. "My son is my lifeblood, no way—what did you say?" My wife rolled her eyes at me: "Of course, do you think I want to give my son away? But she cried so hard, I couldn't bear it... so I just let it go." "Exactly," I breathed a sigh of relief, "If you dare not want your son, I might not want my wife either." But then again, my younger sister is very good to my son. The two sisters have relied on each other since childhood. From my wife's pregnancy to childbirth, my younger sister took care of her. She watched my son grow up, so it's no wonder she treats him like her own. In addition, my son is indeed lively and cute. Even strangers want to hug him when they see him, let alone his aunt. She has bought him more toys and snacks than we have. As soon as my son could speak, she used coercion and manipulation to force him to call his biological mother "Mom," and not to call her "Auntie." He had to call her simply "Mom." She, in turn, became the only person besides my husband and me who had the right to call him "son."
Thinking of my sister-in-law's good qualities, my heart softened, and I said, "Sigh, it's true, all the bad luck in your family has befallen her. Don't worry too much, there's always artificial insemination." My wife told my sister-in-law about "artificial insemination," and I heard a long silence on the other end of the phone. The two sisters both sighed, exchanged some perfunctory words of comfort, and then hung up. My wife lay down for a while, feeling down, but the phone rang again. My sister-in-law said, "Sister, come over for a moment, I need to talk to you." My sister-in-law lived in the next-door neighborhood. My wife had been gone for over two hours and hadn't returned. I settled my son down to sleep and then went to sleep myself. I don't know how long I slept, but I think I even had a wet dream. I suddenly woke up with a start, my penis throbbing like an iron rod from the urge to pee. I got up to go to the toilet, only to find that my wife was already back, silently watching me from the edge of the bed.
I ran into the toilet, peed quickly, jumped back into bed, and went back to sleep. After a while, I realized something was wrong. Why wasn't my wife in bed yet? I turned around and saw that she hadn't even changed her clothes, still giving me that strange look. I patted her bottom, chuckled, and said, "Stop playing tricks, Sleeping Beauty, go to sleep." My wife didn't move, coldly saying, "My sister-in-law and I discussed it; she wants you to 'sow the seed' for her." (Hidden content requires a reply to view) I pulled the blanket tighter, muttering, "Don't be ridiculous, there's a sperm bank. What would she need me for? Go to sleep." My wife exclaimed, "Hi! Your sperm quality is high! Doesn't she love our son the most?" Her exclamation jolted me awake, and I stared at her wide-eyed. She still had no expression. I immediately understood: --My sister-in-law wanted me to "sow the seed"! I instantly
guessed their entire conversation: instead of going to a sperm bank, she'd rather go to her brother-in-law.
Who knows whose sperm a sperm bank has? Maybe there's some genetic disease. My brother-in-law's result is obvious: the most adorable and perfect son in the world.
Besides, artificial insemination costs 100,000 yuan, and even then, pregnancy isn't guaranteed. My brother-in-law, on the other hand... Before marriage, he made my sister have an abortion, and after marriage, he got her pregnant again. He's got a high success rate, almost as high as insemination. Why not
ask my brother-in-law to try? If it works, we'll save 100,000 yuan; if it doesn't, it's no big deal. It's just the four of us, nobody will know.
Hahaha, I never expected this! A surge of joy filled my heart, and my penis, which had just gone limp from peeing, rapidly swelled. I never imagined my little sister would have such a beautiful image of my thing. I never imagined my first extramarital affair would be with my sister-in-law. Even more unexpected was that my wife orchestrated it all. And most unexpectedly, this affair was facilitated by my son acting as a pimp! My little
sister's adorable image flooded my mind. As the saying goes, "A brother-in-law flirting with his sister-in-law isn't unusual." As long as the sister-in-law isn't too ugly, which brother-in-law doesn't have some sexual fantasies? The two sisters were both good-looking, but each had their own style. My wife was slender, while the younger sister was voluptuous, with full, sexy curves. In the summer, her cleavage became my favorite sight to peep on. Every time she knelt down to hug my son, I couldn't resist standing opposite her, wanting to feast my eyes on those big breasts.
The image that flashed before my eyes was: me unbuttoning the younger sister's clothes, pressing against her breasts, holding her naked in my arms, then spreading her legs and inserting my erect penis into her vagina. I could almost hear her moaning… Ten days later, one evening, my wife told me: "Let's try to conceive tonight." That day, we had determined it was the younger sister's ovulation day. After dinner, the four of us started pretending to chat. My sister-in-law made everyone a cup of tea. Her hair was loose and untied, and she wore a sleeveless nightgown. Her two pale arms passed before my eyes, and I couldn't help but look up along them, imagining the beautiful flesh beneath the dress. I kept swallowing, wishing I could pounce on her and strip her naked.
I must have been too lustful, because my wife and brother-in-law were looking at me with hatred, talking about all sorts of trivial things, from stocks and housing prices to supermarket discounts and home renovations, all the way to their messy interpersonal relationships in Jiangxi, but they just wouldn't make a move.
Speaking of which, my wife is quite jealous. If I dared to sleep with another woman, she would definitely make a scene, crying, shouting, and threatening suicide. She and her sister come from a very traditional family, and if they knew her sister was having an affair, she would definitely use her elder sister's authority to give her a good scolding.
But now she's actually going to act as matchmaker, letting her husband's penis penetrate her sister's vagina. Her feelings must be very complicated. These past few days, my libido has naturally been high, especially the night we decided to conceive. I was almost hard all night, while my wife was listless, using the excuse of needing me to conserve my energy, ignoring all my requests. It seems that in her heart, emotion and reason were locked in a fierce battle.
My brother-in-law wasn't in much better spirits either. His eyes and my wife's were strikingly similar, glancing at me with a mixture of helplessness and resentment, sometimes scrutinizing my eyes, sometimes staring at my crotch. My sister, on the other hand, was very calm. After pouring tea, she sat down beside them and listened to their conversation, watching us coldly, like a martyr about to be executed.
I looked at her a couple more times, and she lowered her head nervously. She had once told my wife, "Sister, I don't treat it like sex, I treat it like surgery. When that thing goes in, I treat it like a scalpel, and I let it move however it wants. I treat it like I'm under anesthesia, I don't care." The fact that the three of them agreed to conceive probably has something to do with this "surgical theory."
The clock struck nine, and my sister's face slowly flushed from my gaze. I glanced at her rounded neck and slightly red cheeks, my penis hardening and softening repeatedly, my mouth watering. Finally, my wife and brother-in-law stopped talking. After a moment of silence, my wife said, "Well, let's begin." My heart skipped a beat, my penis hardening like a warrior hearing a battle cry, my body trembling involuntarily. My sister nodded, stood up, and two smooth, bare legs dangled from her nightgown. I quickly stood up too, one hand excitedly reaching for her waist. But before I could touch that full waist, my brother-in-law suddenly jumped out, grabbing her hand first, and the two went into the bedroom.
I was stunned. My wife pulled me down to sit, displeased, saying, "What's your rush? This is my brother-in-law's plan. They'll do it first, and then call you when they're almost done. After all, my sister can't accept you right away..." What the hell?! What kind of plans are you making without telling me?! My dick is burning hot, it's about to explode. I took my wife's hand, grasped it, and said in a slightly coquettish tone:
"Good wife, she's already in the mood, don't waste your feelings." My wife gave me a disgusted look, pulled her hand away, and said, "Haste makes waste. My sister isn't very open-minded, and if you just... penetrate her directly, she probably really can't do it. Why don't you let your brother-in-law warm up first, and then you can go for it." The bedroom door wasn't closed, and the bed creaked loudly; they had already started. I was itching with anticipation, hoping to be called on soon, but my wife continued seriously, "Also, I called you here to plant the seed, not to have fun. You're only allowed to penetrate, not touch, and definitely not to kiss her. You're not allowed to touch her anywhere except your penis." This perverted wife! This perverted brother-in-law! I cursed inwardly: She wants to use my seed, but she's afraid I'll take advantage of her. Am I really a mindless scalpel? I said, "How can I not touch her? At least I need to hold her legs, right? Otherwise, how can I penetrate her?" My wife thought for a moment and said, "Well... don't worry, we'll help you spread your legs." Huh? "Two supervisors for sowing seeds?" I said with a wry smile, "Well, that's great. The world's turned upside down. Before we got married, when we were dating, I could touch you, I could kiss you, but I couldn't have sex with you. Now it's all reversed. I can have sex, but I can't touch..." Suddenly, my brother-in-law yelled "Ah!" Without hesitation, I jumped up and rushed to the bedroom. My brother-in-law was on top of my sister, both of them naked, their four legs intertwined. Compared to my brother-in-law, my sister's body looked exceptionally white.
My brother-in-law limply rolled over and said, "I didn't have a good time, I came..." My eyes lit up, and my sister's body was dazzlingly exposed. My blood rushed to my head, and without wasting a second, I immediately pulled down my shorts, not even having time to take off my undershirt, and jumped onto the bed to fill the void left by my brother-in-law. My sister screamed "Ah!" in fright and quickly pulled the sheet over her body. I lifted a corner of the sheet and unceremoniously grabbed her legs and spread them apart.
My sister twisted her body, trying to forcefully close her legs together, clearly attempting to resist. But I had already spread her legs, and I was lying face down on top of her. At that moment, my penis, as expected, rapidly became engorged and rushed to her entrance. I lowered my waist and thrust hard—it went in!
Women are truly strange creatures. She had been twisting so violently just now, but as soon as my penis entered, she immediately became docile. My sister relaxed her body, her legs obediently allowing me to hold her, letting me do as I pleased. They seemed to have done quite well just now; her little hole was moist and smooth, feeling incredibly comfortable. But it was such a pity. That day, I only did it a few dozen times, maybe only a dozen. I hadn't even savored the taste of her little hole before I ejaculated.
Think about it, for this day, my wife had told me to conserve my energy for half a month, forbidding me from having sex. And this was my first time sleeping with a woman other than my wife; the mental and physical stimulation was just too strong, of course I couldn't hold back.
After ejaculating, I continued to thrust wildly, hoping to get hard again inside her. However, no miracle occurred. After all, I was over thirty, and my refractory period had lengthened. I pretended to pull out my penis, my hands sliding down her thighs, one hand holding my penis, the other touching her labia, before reluctantly withdrawing.
The entire process—from initial appearance to penetration to ejaculation—had happened in an instant. My wife and brother-in-law had long forgotten those ridiculous rules, staring dumbfounded as I thrust into her vigorously. Only when my penis was pulled out did they snap out of their daze, quickly elevating my sister's hips to prevent semen from spilling out. My brother-in-law even pulled the sheet up to prevent further exposure.
Back home, I had another passionate encounter with my wife. Perhaps stimulated, my wife was highly aroused. Because I had just ejaculated, the second time lasted longer, and I channeled all my pent-up desire for my sister onto my wife. We were both incredibly passionate. That time, our lovemaking was arguably our best since the birth of our son.
The next two weeks were filled with anxiety as we waited for news from her body. Of course, I hoped for a successful attempt to conceive and spread my genes—it's human nature, after all. But I didn't want it to be too smooth. Ideally, I'd try three or four times—but not too many times. If I tried once a month, three or four times would take three or four months. If there were no results, my sperm would lose credibility, and they might change their minds.
Finally, the news came that my sister-in-law's period arrived on time. This was good news for me, but bad news for the three of them. Then came even better news: my brother-in-law had bought a book called "Sperm Wars," which brilliantly pointed out that mixing sperm from different men reduces the chances of conception and produces toxins that can harm a woman's vagina and might even induce cervical cancer.
After discussing it, my wife and sister unanimously blamed my brother-in-law for the failed attempt, believing his sperm was the culprit—more trouble than it was worth, and that he himself was a dead sperm, blocking everyone else's path. So, for the second attempt, they learned from their mistake and skipped the warm-up; they sent me straight to the test. I learned from my previous mistake and secretly masturbated the day before to avoid getting too excited and having to finish at the last minute.
That night, my sister took a shower and went into her room first. My wife nudged me with her lips, and I turned to look at my brother-in-law. He sat expressionlessly on the living room sofa, deliberately staring at the floor and avoiding my gaze. Heh heh, what a blatant attempt to hide his true feelings. I tiptoed into the bedroom and pushed open the door. Only a small light was on. My sister was wrapped in a sheet, her eyes closed, her cheeks flushed.
I closed the door and gently pulled back the sheet. Sure enough, she wasn't wearing anything. First, I saw her snow-white shoulders, then her full breasts, small nipples, firm belly, messy pubic hair, and finally her rounded thighs, long calves, and chubby feet. My eyes swept over her entire body.
My sister's body was completely exposed before me, her fair skin like a sacrificial lamb, lying defenseless before the god of conception. I felt my blood boil, wanting nothing more than to devour her whole.
Her face flushed even more, her breathing quickened, her breasts heaving rapidly, her nipples bobbing like two small boats on a turbulent sea.
I cupped the breast I had longed for in one hand, and she let out a soft "hmm," her body tensing instantly, her hand instinctively rising to grasp my wrist. I felt her stiffness; after all, she wasn't the kind of woman with an open mind. If it weren't for the child, she probably would never have touched another man in her life. Now, lying naked before another man, letting him fondle her breasts, it was inevitable that she would be tense.
I suppressed my burning desire, feigning gentleness as I lay down on my side, tenderly stroking her cheek and gently kneading her breasts. Her breasts were fuller than my wife's; even lying down, they remained firm and large. Because she hadn't breastfed, they were very firm and elastic to the touch—frankly, much better than my wife's. I gently circled her breasts, from left to right, then back to left. Slowly, her expression became more natural; I knew she was relaxing and preparing for my penetration.
One hand continued to knead her breasts, while the other began to move downwards, first along her outer body, then slowly gliding over her waist, buttocks, and thighs. After a while, I parted her legs. This time, she didn't resist, slightly opening her legs. My heart pounded. Oh, she was ready to accept me! I reached into her opening but found no moisture, so I withdrew my hand and carefully stroked her inner thighs. They were soft and felt wonderful.
She began to show some pleasure. I freed my hand to pull down her shorts and guided her hand to my penis. My penis was burning hot, and my sister immediately realized what she had touched. Her closed eyes twitched, and she closed her hands to grasp it, occasionally squeezing it gently. I held her body and began to suckle her nipples.
Her nipples quickly hardened, and I inhaled her fragrance with ecstasy, kissing my way up from her breasts to her chest, neck, chin, nose, and eyes, but I didn't dare kiss her lips.
My sister's reaction intensified, and she began to moan incoherently. Everything went smoothly, and I continued sucking her nipples, then rolled over and pressed myself against her warm body, my hard penis pressing against her soft lower abdomen, my legs rubbing against her thighs unhurriedly. I checked the entrance again; it was wet and smooth. I groped and parted her labia, inserting my fingers. My sister's body was invaded, her buttocks tightened, and she let out a soft "hmm," gripping my arm tightly. I was overjoyed: she was already overflowing!
I immediately pulled over a pillow and placed it under my sister's buttocks, both for easier sex and to prevent semen from leaking out. My sister opened her eyes, looked at me, and understood what I meant. Her chest heaved violently, and I could clearly feel her legs trembling. She obediently lifted her buttocks so I could place the pillow under her. I knelt between her legs, lifted her feet, kissed her labia a few times, spread her labia with one hand to expose her opening, and grasped my penis with the other, ready to insert it.
Just then, my sister let out a groan and grabbed my wrist. I was startled and said, "What's wrong?" My sister said intermittently, "No... I feel like... I'm not ready yet..." She's already so wet and still not ready? I pulled her hands away and said, "Okay, okay, don't be afraid, you've been ready for a while." I aimed my penis at her and thrust it in, but just as the head of my penis entered, she quickly pulled her legs back, rolled over to her right side, and tightly guarded the entrance with her hands, muttering incoherently, "No...no...not yet..." At this crucial moment, I couldn't let her cause any more trouble. I lay down against her back, lifted her thigh with one hand, aimed my penis at the entrance, and thrust it in again with force. My sister let out another "Ah!" and rolled to the other side of the bed, this time screaming much louder. As soon as the door opened, my wife and brother-in-law rushed in. It was strange, at this moment my sister actually quickly pulled the sheet over her body. Was she embarrassed even by her husband and sister? This made me reflexively cover my penis as well.
They came so fast, I really suspect they'd been squatting outside the door all along. My wife immediately asked, "What's wrong?" My sister seemed unable to say anything else, only repeating over and over, "No... I can't..." My wife was displeased. She said, "Look at you, you're the one who wants to 'plant' (the seed), and you're the one who can't. You went in last time, why can't you this time? If you don't do it this time, then you've... wasted your time, haven't you? Your husband and I have sacrificed ourselves for nothing, haven't we? Huh?" My sister clutched the sheets tightly, unable to utter a single word, pitiful. Looking at her with a pleading expression, my wife's heart softened again. She sat on the edge of the bed, stroking my sister's hair, and said, "Alright, little sister, now that things have come to this, we have no choice but to continue. Don't think too much about it." She beckoned me to sit down too, and holding my penis, she said to my sister, "Look, it's just letting this thing go in for a bit, just going in and fiddling around a few times. Here, feel it." After all that fuss, my penis had gone soft, but when my wife pulled my sister's hand over and held it, it immediately became excited again, throbbing and hardening in her chubby little hand.
My sister stared at it intently, her outstretched arm revealing half of her breast, casting a spherical shadow in the dim light. My penis grew even harder, the glans breaking free of her hand, gleaming purple as it thrust towards her face, seemingly too big for one hand to hold.
Finally, my penis became extremely hard, even pointing upwards—a difficult feat. I could only get this hard when I was a teenager, not even during my first time making love with my wife. Unexpectedly, stimulated by my sister-in-law, my penis performed beyond its usual level. Perhaps it was because I was being intimate with her sister in front of my wife that it felt so stimulating.
I couldn't resist grabbing my sister's hand and gently stroking my penis. My wife continued her earnest advice: "Didn't you say yourself that you should just treat it like a scalpel? It's just two cuts, two cuts and it's done, it doesn't even hurt." My sister, who had been obediently playing with my penis, suddenly pulled her hand away and said, "No, sister, that's what I thought too, just treat it like a scalpel. But what I thought in my mind was one thing, and what my body reacted to was another. When it wanted to... to go in, I just couldn't control myself, I just couldn't let it in." My wife hadn't expected this reason and said dismissively, "Sigh, you should try to be more open-minded. Just treat it like your husband. Men's things are just like that, aren't they?" I chuckled and said, "You talk like you've seen that kind of thing many times." My sister laughed too. They actually came from a very strict family. Although my wife and I had sex before marriage, we had already decided to get married at that time, and she was still a virgin. My sister knew this about her sister very well. My wife glared at me for a moment, then suddenly turned to my brother-in-law, yanked his shorts down with both hands, grabbed his penis, and dragged him to the light, saying, "Look, look, take a closer look, is there anything different?" The three of us were stunned; we never expected her to do something like this. My brother-in-law had been standing silently by, watching my wife urge his sister on, and suddenly having his shorts pulled down and his penis grabbed, he was completely flustered, awkwardly stammering "Ahhh," unable to speak.
My wife was just over thirty; although not as voluptuous as my sister, she was tall and slender, with a straight nose and large eyes, often captivating at university dances.
Putting myself in her shoes, since I had sexual fantasies about my sister-in-law, my brother-in-law probably had some feelings for her too. Today, since we were visiting my sister's house, my wife was dressed casually, wearing a pink low-cut t-shirt and a white skirt. When she pulled my brother-in-law down, he was standing right in front of her. Looking down, you could see at least half of his breasts, and his calves were already brushing against my wife's most sensual parts: those two strong, long legs. My brother-in-law blushed, his breathing quickened, and his penis hardened at a speed no less than mine.
At this moment, both penises stood side-by-side under the light. We were about the same size, and our penises were similar, but because my brother-in-law was a bit heavier, his penis appeared smaller against his large belly, and part of the base was already buried in his stomach, meaning he probably couldn't penetrate as deeply as I could.
On the other hand, because I had been circumcised, the transition between my glans and penis didn't look as natural as his.
My sister glanced at it and stammered, "Um...nothing's different..." My wife realized her impetuousness, and after getting my sister's answer, she quickly let go, blushing, and said,
"Um, then, let's continue..." Continue? How could we continue? I was inwardly chuckling when, unexpectedly, my brother-in-law, still aroused by the earlier stimulation, couldn't hold back any longer. He immediately interjected, "How about I go in first? You can come in later, brother-in-law. Don't worry, I won't ejaculate." Then, he quickly grabbed his hard penis, went around to the other end of the bed, lifted the sheet, lifted my sister's legs, aimed slightly, and smoothly inserted it.
My sister's expression shifted slightly; she seemed to be enjoying it. My wife and I knew the insertion was working well. My brother-in-law had clearly been too stimulated, panting heavily as he thrust in and out.
A slight smile appeared on my sister's face. Seeing us watching her, she closed her eyes shyly, but still moaned softly in rhythm with my brother-in-law. Seizing
the opportunity, I quickly lifted the sheet and gently massaged my sister's breasts. My sister gently grasped my wrist but didn't resist; instead, she actively guided my hand to massage her own breasts. Her smile widened, and if my wife hadn't been there, I would have loved to lean in and kiss her.
Just then, I felt a movement below. Looking down, I saw my wife's hand cupping my penis. Her eyes were fixed on my brother-in-law and sister's genitals, one hand cradling her flushed face, the other gently stroking my penis.
My brother-in-law, noticing his wife watching him, thrust even harder, looking up at her with a smug grin. My brother-in-law's smile was so obvious, even I could tell. He was practically saying, "How about that?"
His wife, unsure what to do, turned to look at the head of the bed, only to see me intently caressing her sister's breasts. She couldn't help but say sourly, "You two are enjoying yourselves... Okay, be careful not to ejaculate, time to get down to business." Hearing this, my brother-in-law pulled out with a "hey," tumbling to the edge of the bed, saying, "Okay, brother-in-law, hurry up, or I'll really ejaculate again." My sister, already flushed from his ministrations, felt a sudden emptiness below, opened her eyes, and gave me a hopeful look before quickly turning her head away and closing them again.
That look fueled my passion. I raised my penis, strutted onto the bed, and, as if wielding a thousand-times-forged iron rod, slammed it down hard.
My sister let out a soft "Oh," and unconsciously lifted her hips to meet the rod. She tilted her neck back and gripped my waist tightly with both hands. With each thrust, she twisted my muscles.
Having held back for so long, once I finally penetrated her, I seized the opportunity and thrust dozens of times in quick succession, each time faster and deeper than the last. My lower abdomen slammed against her vulva, filling the room with the sounds of "slap slap slap."
Perhaps because her husband and sister were nearby, the younger sister kept her eyes tightly closed, her brows furrowed, and her mouth shut, remaining completely silent as I thrust in and out. I thrust about a hundred times, but she showed no reaction. I couldn't tell how she felt. The only movement was her large breasts, which bounced with each thrust, rising and falling in a particularly sexy way.
I was immediately aroused again, so I changed positions, spreading her legs and wrapping them around my waist. I leaned down, pressing my upper body against hers, bringing our chests into close contact.
The younger sister still didn't dare open her eyes, but she accurately guessed the position I wanted from my movements. She cooperated by opening her arms and wrapping them around my neck, then turning her face to the side, as if even with her eyes closed, she was afraid to look at me.
I shifted my hips, trying a couple of times, but realized the angle was wrong. While my penis had remained inside when we changed positions, now our bodies were almost parallel, and most of it was pulled out, leaving only the glans inside. A slight pull would cause it to slip out.
Then I remembered I'd rushed in and forgotten to use a pillow. Reluctant to leave her breasts, I remained on top of her, grabbed a pillow, and placed it under her buttocks. My sister finally opened her eyes and glanced at me. Seeing that I couldn't easily insert the pillow because my hand was behind my back, she released my neck, took the pillow, and obediently raised her buttocks, placing the pillow under herself.
My sister's gaze also swept over my wife and brother-in-law. They'd agreed to let us do as we pleased, but I knew they were actually quite unwilling. They'd seized the opportunity to barge in, and now they were lingering in the room, their expressions a mixture of bitterness and fervor as they watched our live performance.
I didn't care about their stares anymore. Holding the hard rod, I thrust it in again. Although the entrance was already raised quite a bit by the pillow, and I could feel my sister arching her hips to meet my penis, our tools still formed a considerable angle, preventing me from going very deep.
But my attention had shifted to her upper body, pressed against her soft, warm breasts. My nipples rubbed against hers, her breasts flattened by my pressure, enveloping my chest. Amidst the large, warm, soft mound, there were two hard little nipples, stimulating my nipples with a swishing sound, sending a tingling, numb sensation through me.
I embraced her body, ecstatically lowering my head, pressing against her plump, white shoulders. The boiling blood in my body turned into waves of hot air, purring onto her shoulders.
After I lay down, the sensation below intensified. My sister was a voluptuous woman, her abdomen soft and elastic. With each thrust of my hips, I rubbed against her smooth belly, our pubic hairs intertwining, rubbing against each other's abdomen like sandpaper.
Due to the position, my penis and vagina formed a strong, acute angle. It didn't penetrate deeply, but it penetrated with greater force, like a stick inserted at an angle, the base tightly supporting the entrance, the glans pressing firmly against the vaginal walls. Each thrust seemed to pull the vagina out a little, each push seemed to bend it a little.
I slowly thrust in and out, immersed in complete enjoyment. My sister seemed to have forgotten her husband and sister's presence, her hands around me gently stroking my back. It seemed she was also beginning to enjoy sex.
I suddenly remembered that my wife preferred nine shallow thrusts followed by one deep one, this rhythmic variation, saying it was more stimulating than just fast attacks. Maybe my sister had the same preference.
So, I spread her legs on either side of my body, held her calves with both hands to straighten myself, aligned my penis with her opening, gently inserted a few times, and then suddenly thrust in hard, all the way in. Now our bodies were almost perpendicular, my penis and her opening were completely aligned, and this sudden thrust reached the deepest point, catching my sister off guard. She cried out "Ah!" and reflexively shook her head, her beautiful hair flying to the side, her outstretched hands grabbing the sheets, her body tensing up, as if preparing for my next attack.
But I didn't use any more force, gently thrusting in and out four or five more times, waiting for her body to gradually relax, and then suddenly thrust in hard again, my sister immediately let out another "Mmm," and out of the corner of my eye, I saw that even my wife and brother-in-law seemed to move slightly. The "
nine shallow, one deep" method is said to be nine shallow, one deep, but in reality, it can't be nine to one. My wife and I usually use four to one or five to one, otherwise the woman gets too impatient. I changed the rhythm to five shallow thrusts followed by one deep one with my sister. She quickly adapted to my pace, and every time I thrust deeply, she would involuntarily let out a soft moan, just like before.
All night she had been like a sleeping beauty, letting me do as I pleased. Now, finally, she started moaning, which only fueled my passion. Her desire was about to erupt, so I immediately increased the speed, from five shallow thrusts followed by one deep one, to four shallow thrusts followed by one deep one, from three to one, then two to one, and finally just one deep and one shallow.
Each adjustment in speed brought an unexpected, premature deep penetration, catching my sister off guard and causing her to cry out. Then, as the speed stabilized, the cries would subside, turning into low moans.
I found this changing rhythm very interesting. After one shallow thrust, I suddenly stopped, withdrew my penis, and remained still. My sister was ready for a deep thrust, even letting out a soft "hmm," when suddenly there was no movement below. She quickly looked up at me, her eyes blinking as if asking, "What happened?" I chuckled, then used all my strength to thrust my entire body in quickly and forcefully.
My sister giggled, letting out
a soft "hmm," and playfully slapped me, saying, "You naughty brother-in-law." These two sisters were exactly alike. I often used this "suddenly missing" trick on my wife, and every time she would react with a playful snort and a playful scolding, "You naughty thing."
I turned my head, intending to wink at my wife, but what I saw was her gently stroking her brother-in-law's penis. My movements slowed down—was this my wife? Although her husband was having sex with her sister, it was all pre-arranged, for the purpose of having a child, not for pleasure. Although she had touched that penis, it was for cooperation, not for pleasure. In this completely unnecessary situation, what reason would there be to help someone masturbate?
My sister sensed my sluggishness and looked in the direction I was looking. My wife stopped what she was doing, lowered her head, and tried to pull her hand away. But my brother-in-law firmly grabbed her hand, avoiding our gaze, but without hesitation, he tightened his grip and continued stroking her. I sighed inwardly, sensing something was about to happen, but I couldn't stop it. So I focused my attention back on my sister, and with doubled desire, thrust in forcefully. My sister was still staring in disbelief when my sudden thrust made her scream again. This time, I didn't bother with any back and forth; every time I went all the way in, until it was bloody. My sister couldn't hold back any longer and began to groan loudly.
Actually, after so much time, she had long been in the mood, but she had been suppressing it at the beginning, trying to maintain a mask of "not enjoying herself." Suddenly seeing her sister and husband enjoying themselves first shattered that mask. Coupled with my sudden increase in intensity, the mental relaxation combined with physical stimulation meant it was no longer just soft moans, but loud, unrestrained "ahhh!"
I felt restless all over, filled with an uneasy excitement, yet I couldn't pinpoint what was making me uneasy. I could only channel all my strength into my groin, thrusting wave after wave into her. Thank goodness I had the foresight to masturbate yesterday; otherwise, with such intense stimulation today, I probably would have ejaculated long ago. My sister lay limply on the bed, her arms outstretched to her sides, her legs held in my hands, too exhausted to care about anything but loud moans.
Seeing my sister so passionately enjoying sex, my sexual desire intensified rapidly. Finally, I forcefully ejaculated my thick semen into her vagina and into her uterus.
Unexpectedly, my sister gave birth to twins, a boy and a girl, after ten months of pregnancy. While sharing in my sister's happiness with her husband, my wife was also extremely jealous and wanted me to implant twins in her belly as well.

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My wife and brother-in-law were visiting; I was busy planting seeds for my sister-in-law.

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