My sister-in-law's labia were still turned outwards.

My sister-in-law's labia were still turned outwards. The younger sister was only wearing a thin dress, her full breasts, plump hips, slender waist, and pink legs vaguely visible, exuding a captivating allure. The younger sister went to the bathroom on her own, casually pulling the door open, but not closing it properly. I peered through the crack in the door and saw the younger sister lift her skirt with both hands, tucking it under her armpits, revealing her round buttocks encased in semi-transparent nylon panties. Then the younger sister pulled down her panties and squatted down. I saw a stream of water shooting into the toilet bowl; I saw the younger sister's genitals, the stream of water shooting out from the center of her vulva, splashing and making a "drizzling" sound in the toilet bowl. The younger sister kept her legs tightly closed while urinating, seemingly enjoying herself. Although the younger sister was young, she already had a fairly thick pubic hair, and her labia majora were slightly parted due to the exertion, revealing glimpses of pink flesh. Two or three minutes later, the flow stopped. The little girl wiggled her buttocks a few times, and the last few drops of urine dripped from her vulva. Just as she stood up to put on her panties, I clapped my hands and walked in, startling her so much that she squatted back down, her legs tightly clamped together, and her hands hugging her knees. I laughed, "A spectacle, a real spectacle! Little sister, I saw everything." "You—brother—" The little girl was so flustered that her face turned red, and she couldn't speak. I leaned forward, hugged her, and kissed her. The little girl struggled a few times but couldn't break free. I then invaded her cherry lips with my tongue, entwining it with her fragrant tongue. Afraid of hurting me, she didn't dare to struggle too much. For a moment, she just trembled all over from my kisses and had no strength left. Taking advantage of the passionate kiss, my hand reached behind her, unzipped her nightgown, and slipped inside to loosen her bra. I pulled her skirt down from top to bottom, kissing her bare, smooth shoulders and gently pinching her sensitive nipples. Her breasts heaved rapidly, a tingling pleasure spreading from her chest throughout her body, and an itch rose between her legs. "Brother, brother!" she whispered, her hands pressing tightly against my back. I inhaled her fragrance, my hands working even busier, tearing off her last remaining garment, her panties. I pressed her against the edge of the pool, lowering myself to press my lips to her alluring, mysterious area, passionately kissing the soft, downy flesh. She arched her back in trembling, letting out a hoarse moan, "Ouch!" Then, her legs went weak, and her body sprawled out on the floor in a V-shape. In her fertile field, a strange moisture overflowed. I buried my face in that mysterious place, greedily inhaling the fragrance, thirstily drinking in the spring-like fluids. The little girl shook her hands violently, seemingly unsure of what she was doing, her beautiful hair cascading over her face, moaning dreamily, "Mmm, brother, uh, I, I can't take it, oh!" I continued to suckle without looking up, my hands caressing her thighs, which only further aroused her, causing her body to writhe uncontrollably. She no longer cared about shame, raising her pink buttocks high, widening her entrance, revealing her most mysterious and unexplored area to me without reservation. I stood up and stripped naked. Then I knelt down, taking the little girl's hand and guiding it to feel the heat emanating from my penis. But when her hand touched it, she quickly struggled and pulled it back, her face flushed with embarrassment. I admired her snow-white, delicate skin and her fiery body. My younger sister's breasts were like newly sprouted winter bamboo shoots. Although her chest wasn't very large yet, they were firm and elastic. Her whole body was snow-white and smooth, like the finest silk, and her slightly red areolas created a strong sense of sensuality. I lowered my head, and she opened her cherry lips, which were full of desire, and let out a low moan. My lips touched her fragrant lips, and in the instant her whole body trembled, I pressed myself against her. "Mmm, mmm," she murmured, her jade arms tightly wrapped around my neck, her long legs spread apart, eagerly welcoming me. Impatiently, I moved my hand down, wanting the head of my penis to be right against the entrance, but her hand beat me to it, and my penis was already in her jade hand.At this moment, the younger sister seemed to have abandoned all restraint, as if she had endured for a long time. Upon touching that hard, thick, and hot penis, her delicate hands trembled. She timidly asked, "How come your penis is so big? How can my little hole accommodate it?" She gritted her teeth, sighed deeply, and finally made up her mind. Overcoming her fear, she guided the glans to the entrance of her vagina. Her labia, burning with heat, pressed against the glans. I first gently rubbed the glans against the vaginal opening. How could the younger sister resist such teasing? She gasped for breath, "Brother, please stop teasing me! I can't take it anymore!" Hearing this, I chuckled and teased, "Lanxiu, didn't you used to forbid me from kissing you? Now you're letting me in even this last stronghold?" My little sister blushed crimson, rolled her eyes, pouted, and pinched my ribs hard, saying coquettishly, "Hmm, I won't do it anymore! You always bully me, and you're acting innocent after getting the benefit!" I laughed, "Okay! Brother won't tease you anymore. Now brother will let you enjoy yourself properly." Hearing this, she held her breath, waiting for my thrust. Her labia were incredibly soft, and her virgin vagina was so narrow; her vaginal fluid was just the right amount of wetness without being too slippery. I slowly pushed my penis in, and to increase our pleasure through full friction, she tried desperately to restrain herself from being too wanton, but ultimately couldn't resist and thrust her pink buttocks forward. As my penis thrust into her, and she arched her back, the glans pierced her hymen. Suddenly, the little girl screamed, her body trembling violently. Her legs clamped tightly around me, her lower abdomen heaving, her mouth agape, but she couldn't utter a single word. Her once rosy face turned deathly pale. After a long while, she finally let out a long breath, her voice trembling as she said, "Ouch, it hurts so much! Brother, you've really ruined me! How can it hurt so much! You said you'd enjoy it, I'm not doing it anymore, hurry, hurry and pull it out!" The young girl, experiencing the pain of inexperience, kept saying this, tears streaming down her face. I had finally seized this opportunity, how could I just pull out whenever she asked? But seeing my little sister's deeply furrowed brows and tearful face, she looked so pitiful that I couldn't bear to force myself on her. So I put my mouth close to her ear and whispered, "Good sister, your hymen is already broken. Even if I pull out, it will hurt you. Why not bear with it a little longer and let us experience that unprecedented pleasure together?" She looked at me, her eyes full of questions, and said, "Brother, is it really as good as you say?" I smiled, encouraging her with my eyes, and said, "Yes, otherwise why would there be an idiom called 'male and female love'? That's what it's about. Women will feel pain at first, but after that, it's all enjoyment." My little sister didn't speak at first, biting her lip and thinking for a while, before saying in a trembling voice, "Brother, you must love me well!" Seeing that she agreed, I hurriedly and slowly pushed my penis in again. She was so nervous that she was covered in cold sweat, and only breathed a sigh of relief when the head of my penis reached its end. I knew that if I thrust immediately, it would cause her pain again. To ease her tension and rekindle her desire, I swayed my hips, rubbing my glans against her inner walls, while gently kissing her lips and entwining my tongue with hers. After a few minutes, my actions had worked. Her tears had dried, and her eyes held a captivating gaze. She occasionally let out seductive moans, her breathing quickened, and her lower body began to writhe. She said shyly, "Brother, it's much better now. Hmm, whatever you want to do, I... I'll endure it." She spoke her true feelings, her face flushing red again. She turned her face away, not daring to look at me. I chuckled, reached out and turned her face back to me, looking into her eyes, and said, "Little sister, I didn't lie to you! It doesn't hurt anymore! You don't have to endure anything, just feel it with your body." The younger girl, shyly responding, gently pounded my chest with her small fists in agreement. I placed my hands on her breasts, my lower body suspended in the air, supporting my weight with my hands and toes, like doing push-ups, rising and falling, my penis thrusting in and out. My penis filled her vagina, making it feel full and airtight, her labia turning up and down with each thrust. She moaned softly, then cried out, "Oh, so good!" Her eyes were glazed over, her mind seemingly elsewhere, yet her body automatically arched to meet my thrusts, allowing me to penetrate her fully. I smiled as I watched her, my hands also roaming freely over her body. Gradually, she forgot her girlish modesty. Having tasted the pleasure, her skin thickened, and she began to moan incessantly, "Brother, it's so good, so wonderful! Mmm, I was so stupid before. If I had known it would be this pleasurable, I... I would have let you penetrate my pussy." Her labia opened and closed, biting my penis, making "poof, poof" sounds as the bubbles burst. Hearing her moan so enthusiastically, I became even more aroused. I grabbed her legs and hoisted them onto my shoulders, allowing me to penetrate her deeply. She initially cried out in pain from the twisting motion, but then readily accepted the position, finding it more direct. Because we were on the floor, I decided to finish quickly to avoid ending up bedridden after our lovemaking—that would be embarrassing. So I relentlessly attacked her vulva. The room was filled with the continuous "plop! plop" sounds of penetration. My glans pressed against her clitoris, and I occasionally rotated my hips, experiencing indescribable pleasure. My younger sister also writhed her hips, panting softly and swallowing saliva, her body drenched in fragrant sweat. Suddenly, her body arched upwards, her hands gripping my shoulders tightly, her eyes rolling back, her mouth wide open, only able to inhale but not exhale, then she exhaled forcefully, crying out, "Oh, uh, my little hole is blooming, um..." I hurriedly thrust even more wildly, my large penis erect, each thrust penetrating deeply without mercy, my hands reaching under her armpits, holding her shoulders to stabilize her body, preventing her from moving. My younger sister's legs swayed incessantly, her buttocks thrusting upwards repeatedly. Suddenly, she cried out, "Ugh, brother, I can't take it anymore. I feel like I need to pee inside, um... I can't stand it!" With that cry, her body went still, and a warm stream of vaginal fluid gushed from deep within her. 4.I quickly held my breath, feeling the impact from within her body. Seeing her already pale and exhausted state, unable to withstand my vigorous thrusts, yet still filled with fighting spirit, I couldn't help but smile bitterly. Just then, because the room was relatively quiet, I suddenly heard what sounded like someone breathing rapidly outside. I shouted, "Who? Who's outside?" At first, no one answered, and the breathing stopped. I lingered on my younger sister, savoring this last moment of tenderness, too lazy to get up and look, thinking I had misheard. Suddenly, the door was pushed open, and my older sister, draped in a light veil, stormed in, her face full of anger, shouting, "What are you doing?" I was startled, feeling deeply ashamed. Just as I was about to answer, I caught a glimpse of my sister's flushed face, struggling to calm her breathing, and a very obvious stain on the center of her dress. A thought struck me, and I smiled, "Good sister, how long have you been eavesdropping outside?" But I saw my sister's eyes widen in anger, her pearly teeth biting her lower lip, just panting heavily, without saying a word. Suddenly, she jerked her shoulder, then couldn't help but laugh, a hint of resentment in her voice, "You! Isn't having your sister enough? Why do you have to hurt your little sister too?" I hurriedly retorted, "Sister, how can you say I'm hurting my little sister? We should let my little sister participate in our pleasure! You've heard how comfortable I am!" My sister coldly snorted and spat, "Yes, you're all enjoying yourselves, and you don't care about your sister anymore!" I suddenly pulled out my penis, laughing as I ran to my sister's side, trembling as I said, "Who said I forgot about my sister? I'm just waiting to serve you!" My sister was caught off guard and blushed deeply, turning to leave in a hurry. How could I let go of such a delicious treat that had been delivered to my door? I grabbed one of her arms from behind, and with the other hand, I slipped under her armpit and pinched her firm breast. This pinch convinced me even more that my sister had been spying on me for a long time, because her nipples were already hard, like plump dates. With my pull, my sister's body went limp, and she fell into my arms, her head tilting back, her hair brushing against my face. My other hand covered her chest, one hand pinching one of her nipples, the other squeezing and releasing her breast, occasionally pushing it with my thumb. Meanwhile, I whispered gently in her ear, "Good sister, how could your little brother forget you?" As I spoke, I nibbled at her earlobe with my teeth. My sister turned her face slightly to the side, offering her cherry-like lips to capture my lower lip. She mumbled indistinctly, "Silly little brother, how could I not know your feelings? We're family!" I seized the opportunity to kiss her lips, slipping my tongue inside. My mouth was parched from our recent passionate encounter with my sister, and now, as if finding a source of hydration, I eagerly sucked on her tongue, savoring her saliva. Since my penis was still ready, I pushed her against the door, grabbed her breasts, and pulled her upper body down, intending to enter her from behind. My sister gasped softly, pushing me away and scolding, "Why the rush? Take your little sister inside now, aren't you afraid of harming her? I'll wait for you in my room!" With that, she went back to her room. I reached out to grab her but missed. Thinking about what she said, I scratched my head, chuckled, and flicked my penis, saying, "I guess I'll just have to make do for now." Then, I turned and picked up my younger sister, who was still unconscious on the floor. I carried her to my room, covered her with a blanket, and hurriedly ran to my older sister's room. The door was ajar, and I pushed it open and went in. My sister was lying on the bed, facing inwards, her nightgown already removed, completely naked. Her skin was fair and smooth, one leg stretched out, the other bent and pressed against it, her hands placed on her chest. I couldn't tell what her expression was like. I chuckled and quietly approached my sister's bedside. Just as I reached out to grab her plump, smooth buttocks, she rolled over, grabbed my arm, and pulled me onto the bed. Then she hugged me tightly and kissed my lips. I kicked off my slippers, hugged my sister, and rolled onto the bed, teasing her tongue with the tip of my tongue, occasionally sucking it into my mouth. In a few quick turns, my sister suddenly pinned me down. While passionately kissing me, she reached down and grasped my penis, which was already erect, thick, and hard. She sat up straight, lifting her hips, guiding my penis to her vulva, and then suddenly sat down. Her body arched backward, and she quickly grabbed my thighs with both hands, her chest heaving. Startled by her sudden movement, I gasped, feeling my penis enveloped in a warm, wet sensation. The instant pleasure almost made me shiver and ejaculate violently. Luckily, I caught my breath in time, afraid to move, and used the opportunity to steady my breathing. A surge of urge coursed through my body, making me want to ejaculate. I quickly and secretly pinched my thigh. At this moment, my sister recovered, leaned forward, placed her hands on my chest, and squatted down rapidly, like riding a horse. Just as my penis was about to emerge from her vagina, it was pulled back in, the squeezing sensation becoming even more intense. I couldn't help but inwardly groan, wondering where my sister had learned this move. I could only suppress my urges, taking deep, forceful breaths, grabbing my sister's full breasts with both hands, not caring about being gentle, just squeezing them hard. With each rise and fall of her body, her breasts were deformed by my pulling. In the heat of the moment, I saw my sister suddenly sit down forcefully, her body slumping against my chest, smiling sweetly, panting, "Little brother, I... I have no strength left." I secretly breathed a sigh of relief and laughed, "Sister, when did you become so amazing?" She gave me a flirtatious look and scolded, "Let's see if you dare to bully me again!" I cried out that I was wronged and said, "How could I dare to bully you, sister? I don't even love you enough! Besides, you're so amazing, I almost couldn't keep my virginity." My sister snorted and said, "I'll let you off today. If I hadn't been standing there watching for so long and I was exhausted, hmph!" I laughed and said, "Alright! Sister, you finally admit you were peeping!" My sister pouted, "So what if you admit it? You dare to do it but not let others see?" I didn't dare to say anything more, and hugged her back with both hands, occasionally running my fingertips along her smooth skin. My sister lowered her head, slightly sticking out her pink tongue, and fed it into my mouth. I sucked on her tongue and gradually recovered. I hugged her, pushed off with my heels, and my buttocks bounced on the bed. My sister's body trembled with my movements, and she made whimpering sounds. My hands slid down her skin to her buttocks, grabbing one lobe at a time and spreading it apart. Simultaneously, with each thrust of my penis, I pressed down on her buttocks. My sister's lips left mine, and she whispered in my ear, panting heavily, making incoherent sounds like, "Mmm...mmm...uh..." After a while, I felt the pressure wasn't comfortable, and the movement was tiring, so I used my hands to pull myself up, gripping my sister's shoulders, and slowly sat up. My sister rested her chin on my shoulder and said sweetly, "Good little brother, take your sister to heaven!" Sitting like this, it felt like my penis was buried in an abyss, unable to gain any leverage. I shifted my hips a few times, but my sister just clung limply to me. I asked her, "Sister, can you feel your treasure like this?" She replied weakly, "Of course I can. How can I not feel something so big inside me? It's just not a strong feeling." I moved around a few more times, but it wasn't very satisfying. My sister didn't move at all, and she wasn't cooperating with me. I used my hands to hold her legs up behind me, then used one hand to support myself on the bed while holding her body with the other, slowly pulling my legs out from under her buttocks and laying her flat on the bed. I knelt between her legs; now it was time for me to unleash my power. My sister's hands were outstretched, her forehead already covered in beads of sweat, her skin a very alluring crimson. I grabbed her ankles, bent her legs, and brought her heels to my buttocks. Then I held her legs against my chest and began to thrust violently. My penis, accompanied by the "slap, slap" sound of skin hitting skin, plunged in completely again and again. I then spread her legs apart, pressing her calves down to her chest, and pressed her thighs apart with both hands, simultaneously holding them down. This way, I could enjoy myself to the fullest and clearly see the magnificent sight of our bodies in contact. The sister's already thick pubic hair, after being crushed and soaked in vaginal fluid, appeared even more unkempt.It was messy, but its color was even more jet black and shiny, with a lot of white glue clinging to it. After my penis was fully inserted, all that could be seen where our bodies had touched was a patch of soft grass, except for two thick and tender labia in the middle. With each thrust and withdrawal of my penis, the labia rose and fell. I slowly pulled my penis out halfway, examining it closely. The front half was tightly wrapped inside her vagina, the labia were spread apart, but the inner walls were joined together seamlessly. The parted labia looked extremely tender, making one's mouth water. Excited by the sight, I reached out and pulled her thighs up, thrusting into her without stopping. My sister's body lay limp on the bed, sliding up and down with my movements. Her breasts bounced spontaneously, like two playful little rabbits, but she no longer had the strength to move them much. She moaned, "Ah! Good brother...you...you're so...good...sister...it feels so good!" Encouraged by her words, I became even more aroused, thrusting harder and harder. I had been off my sister for a long time. Flesh against flesh made a "slap, slap" sound, and her juices were constantly being stirred. My sister just kept moaning and groaning, her cries full of seductive allure. I thrust a few more times with all my might, then could no longer hold back. I lowered myself down, pressing down on her, my body trembling. My lower abdomen contracted and then released forcefully, and I ejaculated wildly deep inside her vagina. My sister was trembling all over, moaning, "Ah! Ah! Little brother... ah... so beautiful... ah... so pleasurable... oh... oh... you... you're so amazing... my pussy... so beautiful... ah... I'm ascending to heaven!" With that, her eyes rolled back, and she seemed to have no strength left to breathe. I pressed myself tightly against her, lying on top of her, all my strength seemingly drained away with that final thrust, and I no longer wanted to move. Such a beautiful moment, yet what a waste! It's time to get some sleep.After that, my older sister and younger sister would sometimes come to my room alone to have sex, and sometimes they would all squeeze onto my big bed, with me straddling them, and I would fully enjoy this bliss of having two women. But one day, I received a call from my older brother saying he had to go on a business trip for a while and asked me to come over and keep my sister-in-law company when I had time. When I told my older sister and younger sister, they strongly objected, not wanting me to leave their side. But while I was playing with them, my sister-in-law's beautiful face kept appearing in my mind. My sister-in-law is twenty-five years old this year, and she is very beautiful. Below her bright eyes is a straight nose, and below that is a delicate, exquisite nose, plus a small, delicate mouth—she is indescribably alluring. Actually, ever since my older brother's wedding day, I've had a feeling of amazement towards my sister-in-law, and I often dream of her as a sexual object, just like now, as I'm having sex with my younger sister, I'm imagining having sex with my sister-in-law. So I simply called my sister-in-law and asked her to move in. Although my older sister and younger sister were a little unhappy, they had no choice but to agree after my sweet talk and relentless thrusting. After my sister-in-law moved in, we were all very happy together. Actually, we were all around the same age, but the sisters deliberately acted intimately with my sister-in-law in taxis, and wouldn't let me touch them all day. I didn't dare to be too presumptuous in front of my sister-in-law, and could only secretly resent it. Watching my sister-in-law coming and going in the house every day, my desire gradually consumed me. Finally, one day I had a chance. My older sister and younger sister went out, and I was reading in the bedroom. I heard my sister-in-law come home from work, and then soon after, I heard the sound of running water from the bathroom. I hurriedly and quietly went to the bathroom door and peeked in through a small hole I had dug beforehand. My sister-in-law had taken off her clothes and was standing in the room. Her figure was extremely beautiful, almost too plump and too thin. Her skin was snow-white, her neck smooth and fair, her breasts round and prominent, the pink nipples standing out vividly against her white skin like two cherries. Her buttocks were full and rounded, like an inverted gourd. Dark pubic hair covered her protruding mons pubis. The sister-in-law tested the water in the bathtub with her hand, then carefully stepped in, standing in the clear, warm water. She gently splashed the warm water onto her smooth lower abdomen, rubbing it up and down, before sitting down in the tub. Her smooth, snow-white body was completely submerged, with only her two jade-like feet resting on the edge of the tub. The sister-in-law arched her back, pulling her lower body backward. The pubic hair retracted, then leaned forward again, creating a messy scene around her vulva, with small bubbles occasionally bubbling from her vaginal opening. Her labia, affected by the bending and straightening of her legs, opened and closed intermittently, a truly beautiful sight. My sister-in-law seemed to feel an itch inside her vagina, so she gently parted her labia majora with her right index finger. When her fingertip touched her clitoris, the sensation changed from itchiness to a tingling, numbing feeling, and her body involuntarily trembled. She then pushed her index finger a little further into her vagina, and with a gentle twist, her vulva became even itchier. She leaned back against the bathtub, her head tilting back, and began to moan, "Mmm... mmm..." Her finger slowly continued to penetrate her vagina. My sister-in-law and brother were newly married, and had only recently discovered the wonders of sex. Now, however, she was alone in her room. Usually, she had me and my sisters to keep her company and make her laugh, so she didn't feel lonely. But her body still had desires, and the touch of her finger was too much for her to bear. I, watching from outside, couldn't resist either. My penis was throbbing painfully against my shorts, and in my anxiety, I banged on the door. This startled my sister-in-law, who was taking a bath. She hurriedly asked, "Who is it?" "It's me—it's me—quick—quick, open the door!" "Little brother? What do you want?" "My—my stomach—it hurts so much, I—sister-in-law, open the door quickly!" "Wait a moment, I'll be done bathing soon." "I can't wait—hurry!" I deliberately added a few screams like a ghost. I heard my sister-in-law emerge from the bathtub, water splashing on the floor, followed by rustling sounds. Then I saw her opening the door, wrapping a towel around her chest and thighs, and saying, "Come in, come in quickly!" My sister-in-law had long, flowing hair, and her whole body exuded the fragrance of bathwater and a uniquely feminine scent. She was only wearing a violet bath towel. She had a pair of shapely, long legs, and her exposed skin was as smooth as frost. Her arms were also round and smooth, soft and boneless. My sister-in-law's lips were half-pursed, and a blush of shyness lingered on her cheeks, clearly still recovering from the pleasure of masturbation. Her eyes were still hazy. I held my stomach with both hands and slowly walked in. My sister-in-law hurriedly came over to help me, anxiously asking, "Little brother, what's wrong?" My face was flushed, and I did look like I had a medical emergency, but it was just a bit of a sore throat from watching so much. How could my sister-in-law know? She reached out and touched my forehead, and was shocked, not knowing what to do. I quickly said, "Sister-in-law, go get me a wet towel to wipe myself." My sister-in-law hurriedly let go of me, walked to the edge of the tub, and bent down to wring out the towel. At that moment, her genitals were exposed from behind the towel, completely exposed to my naked body. I pulled down my pants, and a hard penis immediately sprang out, now even more erect. Seeing my opportunity, I immediately stood up, walked behind my sister-in-law, lifted the towel, aimed my penis at her vulva, and thrust it in forcefully. My sister-in-law suddenly felt someone attacking her from behind. She tried to turn around, but felt something warm and hard gripping her vulva. Instinctively, she touched it and found a penis inserted inside her. She cried out, "Little brother, what are you doing? Take it out!" "No, no!" My sister-in-law tried to break free, but I held her tightly from behind. I ripped the towel off her and threw it to the ground. I held her inner thighs tightly with both hands, and spread her labia from the front, making it easier for my penis to enter. Then, I pressed my head against her back, forcing her to bend over, exposing her vulva, and thrust my penis in forcefully. Because I was pulling her labia too hard, my sister-in-law cried out, "Little...little brother...you...you be gentle...my...my little hole is almost torn apart by you...be gentle...be gentle...ouch...ouch...you...you're so hard...I'm going to...I'm going to die...ouch..." I ignored her cries and thrust in with all my might. There was a muffled "plop" sound as my glans hit something soft and elastic—it must be her clitoris. My sister-in-law stopped struggling and crying out after that thrust, but her buttocks swayed back and forth with my movements, responding to my thrusts. I released her labia, grasped one of her breasts hanging in the air with one hand, and began to knead it vigorously with my fingers. I pressed my body against her back, no longer thrusting forcefully, but simply keeping my penis deep inside her vagina, swaying it from side to side, occasionally twisting it a few times. My sister-in-law tried to straighten her back, but the feeling of having my penis between her legs was strange, and she couldn't move because I was pressing her down. My thrusting and gentle rubbing against her vaginal walls aroused her intense lust; she only wanted to be penetrated forcefully by my large penis. She didn't dare struggle too much, afraid that my penis would escape from her vagina. She could only endure this strange position. She kept moaning weakly. While I moved my hips, thrusting my penis in and out, I used my hands to pull her breasts down, making them numb and painful, yet also giving her a strange pleasure. She shook her head, moaning weakly, "No...don't..." My sister-in-law's hands supported her on the edge of the bathtub, her legs spread wide apart. From behind, her labia were turned back, her vaginal opening stretched wide by my penetration. With each thrust and withdrawal of my penis, her vaginal fluids splashed onto my testicles, thighs, and dripped onto the floor. My testicles, stimulated by the hot, sticky vaginal fluid, throbbed upwards, feeling incredibly pleasurable! I couldn't help but thrust harder and harder, feeling increasingly excited. My sister-in-law's buttocks were raised high, and I almost always hit her G-spot from behind, making her moan, "Mmm...mmm...oh...oh...good...my...my little hole...so...so itchy...oh...mmm...little brother...you really know how...you really know how to penetrate...it feels so good...mmm..." My sister-in-law's labia were almost completely turned inside out from my thrusts. I slowly bit and nibbled at her back with my teeth, occasionally nibbling at a tender piece of flesh between my teeth. As I did this, my sister-in-law's body trembled uncontrollably, her buttocks moving even more rapidly in response to my movements, swaying dramatically. My lust grew ever stronger. 6.I released my sister-in-law's breasts, straightened up, and pressed my hands against her beautiful buttocks, watching my penis move in and out of her vagina. The vaginal walls gripped my penis tightly, stretching and folding with each movement. Most wonderfully, her anus opened and closed with my movements, the surrounding flesh taut. I was incredibly excited. I gently pressed a finger against her anus, but her reaction was intense. She let out a long "Ah..." and her anus contracted sharply, almost pulling my finger inside. Then she grabbed my hand, trembling uncontrollably. I could feel the walls of her vagina trembling at the same time, and even a force pulling my penis inward, making the thrusting even more difficult. My hand was grabbed by hers, so I twisted my wrist around and pinned her hand to her back, while my penis continued its relentless thrusting. My sister-in-law was supporting herself with one hand, and with me thrusting into her from behind, her body swayed even more violently, almost falling to the side several times. Luckily, my other hand caught her slender waist in time. After a few more thrusts, I finally couldn't resist my curiosity and asked, "Hey, sister-in-law, has your little asshole ever been penetrated by a penis before?" As I asked, I rubbed the tender flesh around her anus with my fingers. "Go away...who...who has ever heard of...penetrating an anus..." my sister-in-law gasped, denouncing my wild idea. "Sister-in-law, you're so ignorant. Women don't necessarily need to use their vaginas to be penetrated. A woman's anus, like her mouth, can be penetrated. The anus is just as useful as the vagina." I said with a laugh as I thrust my penis forcefully into her clitoris. "Hmm... Hmph... I don't believe it... My asshole... is so small... My cock is so big... How can it fit?" I laughed and said, "Sister-in-law, your pussy was just as small before it was penetrated, but now it's being penetrated by my big cock and you're screaming with pleasure!" "Go away... Go away... I'm not enjoying it..." My sister-in-law was almost out of breath from my thrusting, but she was still stubborn. I was angry that she was still putting on a brave face, so I suddenly pulled my cock out, leaving only the glans inside her vagina, but I left it there without inserting it. My sister-in-law was moaning with the rhythm of my thrusting, but suddenly she lost her target, and her vagina suddenly felt empty and uncomfortable. She couldn't help but turn her head curiously to see what was going on. Just as she turned her head, I suddenly exerted force, and at the same time, I pulled her hips back with both hands and pulled hard, and my cock suddenly thrust in hard. This time, my sister-in-law couldn't take it, and before she could turn her head, it was thrown back, and at the same time, she let out a long "Ugh" and began her lewd moans again. I thrust in and out a few times forcefully, and seeing that my sister-in-law was no longer paying attention to what I was doing, I quietly wiped away the vaginal fluid and semen that had seeped out of her vulva with my fingers, carefully placing it on her anus. Then I forcefully pulled out my penis, but instead of inserting it back into her vagina, I used my hand to spread her two plump, white buttocks apart, wiping the semen in that deep cleft. My sister-in-law gasped and asked, "Little brother... what... what are you doing..." "I'm going to deflower my sister-in-law's little anus!" I said, aiming my penis at her anus and thrusting in forcefully, half of my penis already inside. This made my sister-in-law scream, "Ouch, it hurts, it hurts so much!" While screaming, she twisted her buttocks, trying to shake off my big penis. But at this time, my penis was clamped tightly and I couldn't shake it off no matter what I did. I myself felt that it was difficult to exert force, neither going in nor backing out, so I could only press down on her body and thrust forward forcefully, and my penis went in a little further. I leaned down and whispered in my sister-in-law's ear, "Good sister-in-law, don't move around. It won't hurt in a bit. It's the same as having your virginity broken. Maybe later, you'll even want my big cock to go in your ass!" At this moment, my sister-in-law wiggled her buttocks a few times, feeling the stinging pain gradually lessen. Her body calmed down, and just as she was about to speak, I started thrusting again. My cock scraped against the fleshy walls of her anus, and she felt another stinging pain. In her panic, she hurriedly cried out, "Ouch...no...it hurts..." I ignored her cries and just pressed my hands tightly against her waist, preventing her from moving much. Then I kept thrusting my cock in and out, each thrust deeper than the last. After a lot of effort, finally, my entire cock was inside. My testicles slapped against her plump, white buttocks, the flesh hitting flesh making a "slap slap" sound, which further intensified my lust. I couldn't help but slap her buttocks with my hands while thrusting. At first, the sister-in-law struggled incessantly, but then she lost all strength and could only moan, "Little brother... now your sister-in-law... is... dead... because of you..." After a series of thrusts, she felt the pain gradually disappear, replaced by a slightly itchy, tingling, and spicy sensation instead of pain. The thrusting of the big cock seemed to relieve the itch, yet it also seemed to tease it even more, a truly indescribable feeling. So the cries of pain slowly turned into moans, and then gradually into soft whimpers that only she could hear. Feeling the pleasure, she couldn't help but raise her big, fat buttocks to meet the thrusts of the big cock, and at the same time, with the rhythm of the thrusts, she cried out in high and low voices, "Oh... good little brother... big cock... so powerful... oh... my asshole is so itchy... darling... thrust harder... thrust... ah..." I thrust harder and harder, her little asshole twitching in waves, her vulva dripping with lustful fluid. My cock was now much smoother, making the thrusting even more pleasurable. Because of the force, my lower abdomen would occasionally slap against her plump buttocks, making a "slap, slap" sound. My sister-in-law just panted, calling out "dear brother, dear younger brother" repeatedly. I thrust hundreds of times in one go, and I couldn't help but pant a little. I leaned on my sister-in-law's back, slowed down, and asked with a smile, "Good sister-in-law, how does it feel?" "Comfortable...comfortable...your big cock...it feels so good inside my little asshole..." "I didn't lie to you, did I! You can have your asshole penetrated, right?" "Yes...yes...but little brother...you...you're making me...even more itchy...ah...my little hole...it's so itchy...ah..." Hearing this, I couldn't help but laugh loudly, thrusting my body against her back. My sister-in-law moved her buttocks and shoulders in protest. I waited until my laughter subsided before panting, "Good...good...I'm willing to...die from exhaustion for you, sister-in-law, just to satisfy you!" With that, I thrust into her anus a few more times, then pulled out my large penis and shoved it into her vagina. The penis went in very smoothly; her vagina seemed to have been waiting for a long time, swallowing it whole. I slowly pulled it out, then thrust it in again forcefully, each time almost hitting her G-spot. After dozens of thrusts, I didn't pull it out completely, but pushed it in as far as I could, the glans against the depths of her G-spot, rotating it up and down and left and right. My sister-in-law's head sometimes tilted back, sometimes drooped low, sometimes swayed wildly from side to side, her long black hair fluttering, a beautiful sight. She moaned, "Mmm...mmm...ah...ah..." It sounded like a plaintive cry, but it only fueled my lust. I pressed deeply into her uterus and vagina, leaving her completely powerless, only able to support herself instinctively with her hands. I lifted her right leg and placed it on the edge of the bathtub, widening her vulva further. As I thrust forcefully, her pubic hair rubbed against the tender flesh exposed by her vulva, that sensitive flesh appearing exceptionally red after being rubbed. My sister-in-law screamed desperately, but could no longer utter a single word, only "Ah...ah..." Her labia, stretched wide by my penis, were repeatedly thrust in to the hilt, touching her clitoris, causing her to sway her hips as if in a frenzy. Suddenly, her body convulsed, and as soon as my penis was withdrawn, her vaginal fluid gushed out, spraying onto my inner thighs and penis, covering them completely. Stimulated by this, I could no longer restrain myself, hastily thrusting my large penis inside, gripping her buttocks tightly with both hands, my body trembling, and my semen also sprayed deep into her vagina. My sister-in-law was utterly exhausted. Her arms could no longer support her body; her knees buckled, and she collapsed to her knees. Luckily, I caught her just in time, otherwise she would have fallen hard. But I was too weak to continue; I could only hold her to slow her fall, but I too eventually slumped to the ground with her, my penis slipping out of her vagina. My sister-in-law lay on the ground, her body curled up like a shrimp, her head touching the ground, her body still twitching intermittently, her breathing incoherent. Her lower body, now without my penis, still had her labia parted, her vaginal fluids mixed with my semen, slowly flowing down her vaginal opening onto the ground…

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My sister-in-law's labia were still turned outwards.

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