The Switch for Lustful Breasts (Chapter Thirteen)

Word count: 14198
"Ah... um... ah... my body is... even hotter... ah..." As soon as she returned to her room, Shi Ping sat on the bed, legs wide open, her unruly fingers sometimes gently, sometimes forcefully rubbing her swollen labia and large clitoris. Her large breasts and beautiful waist, barely concealed, were fully exposed beneath her revealing pink gauze nightgown, the bulging flesh trembling and quivering with each violent sway of her body. "Mmm... so good... harder!" Shi Ping's fair hands tightly gripped her swollen, drooping breasts, her index finger occasionally flicking at her engorged, erect, pink nipples, her mouth emitting increasingly lewd moans and obscene groans that drove men wild. The bed seemed to have a life of its own, swaying rhythmically up and down with Shi Ping's body, creaking and groaning. "Hiss...tsk...mmm...brother's semen...chuckle." Having just been bathed in a large amount of semen, Shi Ping was still intoxicated by the feeling of the warm fluid filling her throat. Her nimble tongue skillfully scraped around in the warm air, fully savoring the fading flavor in her mouth. "This taste...chuckle...makes me want it more and more...mmm." As the fingers were withdrawn, Shi Ping's tender vulva opened up, her labia turning inside out. The fingers gradually climbed upwards, slowly inserting into her hot, jade-like mouth, as if holding her brother's hot, fleshy stem. She began to rhythmically lick it, carefully savoring the sweet honey inside the vulva. The sweetness of her vulva and the strong, pungent smell of Shi Cheng's semen gradually formed a perfect fusion in her mouth. "Ah...why is my body getting hotter and hotter...my breasts are so swollen..." Shi Cheng's semen seemed to have a magical power, making Shi Ping's breasts swell more and more, a whole size larger than before, her two breasts rising to G cups. "My nipples...it's so uncomfortable...ah..." Shi Ping breathed hotly, her hands pinching her breasts hard, her chest constantly throbbing with pain. Her erect, tender nipples had become even larger than before, almost the size of her little finger joint. What surprised Shi Ping even more was that her nipples seemed to be eagerly seeking comfort, and began to wriggle on their own. "My breasts...ah...what's going on...ah ah..." Shi Ping's worried eyes drifted to her breasts below. The trembling nipples brought Shi Ping several times the pleasure without needing to be touched, and her vagina began to gush out a large amount of honey without needing to be cared for. Shi Ping felt a wave of pleasure about to wash over her breasts. Her disobedient fingers gently pinched her trembling nipples, and to her surprise, the slightest touch caused a rush of moisture to her fingers. Thick milk suddenly gushed from her nipples. Her vaginal fluids seemed to try to catch up with the milk, gushing out like a waterfall. "Ahhhhhh... I'm climaxing..." Shi Ping threw her neck back, thrusting her swaying breasts forward, her legs involuntarily spreading wide. Milk and vaginal fluids, like a man's semen, shot out simultaneously from Shi Ping's three erogenous zones, spraying a foot towards the foot of the bed. "Ah... oh... how could this be... just from the nipples... ah... so..." Shi Ping stared in bewilderment at her erect nipples, the sheets soaked with her dripping milk and vaginal fluid. Her swaying G-cup breasts and alluring nipples were practically beckoning men, her disheveled appearance making anyone want to rush forward and fuck her. "Ugh... oh... never mind... so tired." Shi Ping's eyes grew increasingly hazy, her heavy eyelids slowly closing, and she drifted into sleep. "..." "..." "Slap slap slap... slap slap slap..." A rhythmic slapping sound rang out again, accompanied by the seductive moans of a woman that drove men wild. "Ah..." "Ah...what's wrong with me...ah...it feels so good...ah..." The lewd slapping sounds came from beside Shi Ping's buttocks, and waves of pleasure surged up from her lower body. Her breasts and nipples were already erect and swaying in front of the man. Her G-cup breasts, along with milk dripping from her nipples, made her look so lewd that any man would want to play with her. "Is it a dream again...ah...so good...again...hit me...ah..." Shi Ping opened her heavy eyelids and found herself wrapped around the neck and back of the dark figure in front of her, hanging on the man like a koala. Her legs were also wrapped around the man's strong waist, and her body was intensely demanding the man's penis. Shi Ping's beautiful buttocks slowly pulled back, and as the man's glans almost withdrew from her wet and tender opening, she forcefully thrust her fleshy vulva forward, penetrating all the way to the end. With each contact of flesh, a crisp slapping sound came from between their thighs. With each thrust, Shi Ping's breasts swayed seductively in the man's eyes several times. "If this is a dream... ah... let me never wake up... so comfortable... mmm..." Shi Ping happily absorbed the 20-centimeter-long giant rod between her legs, slightly raising her body and placing her erect nipples near the man's mouth, gently swaying her breasts. "Just one suck... just one," Shi Ping licked her tender lips, cupping the man's face in her hands. Her nipples were already wet and tender from the flowing milk, making them even more attractive to the man. "Shi Ping, baby... ah... your pussy is always so tight... your nipples... *kiss*" The man pursed his lips and passionately pressed them against Shi Ping's nipples, warmly enveloping the tips of her areolas. His tongue skillfully slid, gently sucking on her nipples, drawing out thick milk. Shi Ping couldn't help but lift her head, letting out a soft moan of pleasure. "Ah... ah... it's so good... so intense... who are you... ah..." As if she didn't want to leave the large penis in front of her, Shi Ping hugged the man tightly, her legs wrapping tightly around his shapely buttocks, her teary eyes gazing affectionately at the tall, dark figure before her. "Is it good... baby... it's coming..." The man in front of her followed Shi Ping's buttocks, and the two moved in opposite directions at the same time. As their genitals were withdrawn further and further, they looked at each other with adoration... They took a deep breath at the same time, and the next second, their buttocks slammed together forcefully. The crisp sound of slapping, combined with the pleasure coming from her honey hole, woke Shi Ping up from the bed. "Hoo... ah... what time is it..." The midday sun on Saturday shone brightly into the room through the curtains, shining directly into Shi Ping's eyes. Shi Ping shielded her eyes with her arms, her body panting heavily. Her breasts were tightly wrapped in her sexy nightgown, heaving violently, the shape of her nipples asserting their authority within the nightgown. "So tired... my body feels like it's about to collapse..." Shi Ping recalled the scene in her dream. Although it was just a dream, the scene was indescribably real, especially her nearly exhausted body after the dream, and her already soaking wet little hole was the best proof. "It's so late... It's almost 1 a.m.... Has Shicheng not gotten up yet?" Shiping glanced at the clock, slowly sat up in bed, and listlessly looked around the room. Suddenly, her expression changed... "Eh... Shicheng... Yesterday... Ugh... Ahhh..." Thinking of last night, Shiping's body had once again taken control of its own will. She had been passionately kissing her younger brother on the train, and afterwards, she had changed into this set of sexy lingerie that she never wanted to wear. While her brother was sleeping, she ran to his room and gave him oral sex. The whole scene was still vivid in her mind, making Shiping's face turn green. She sat on the bed for a long time, unable to control herself. "Why can't I remember anything now... but now I do... this body is torture!" Shi Ping angrily buried herself in her bent thighs, her eyes glistening with tears, complaining bitterly under the covers. "Is he still sleeping...?" After gathering her thoughts, Shi Ping got up from the bed and slowly walked to the mirror. She carefully took off her alluring clothes and changed into a corset and some light home clothes, only to notice a change in her body. "My breasts seem to have gotten bigger..." Standing in front of the mirror, Shi Ping tried to pull up the zipper of her corset, but it was so tight that she couldn't breathe. Shi Ping removed the corset and looked at her naked body in the mirror, puzzled. She found that her breasts were noticeably larger, and her nipples were more erect and larger, as if enticing a man to suckle them. Seeing this change, Shi Ping couldn't help but gasp in surprise. "How could this be..." Shi Ping's face contorted with disgust as she stared nervously at herself in the mirror. With no other option, she hastily slipped on a loose-fitting, plain white tank top and a pair of underwear. Her pink, erect nipples swayed alluringly against the fabric. "My nipples... ah... they've become even more sensitive... ah..." Shi Ping noticed that the pleasure was even more intense than before when the loose tank top brushed against her nipples. She braced herself against the wall, slowly making her way out of the room, moaning softly from the pleasure emanating from her nipples. "Ah... get a glass of water... come back... um... go back to sleep..." Just leaving the room felt like walking on a thorny path; the thought of going downstairs made her legs involuntarily go weak. "Shicheng... is still sleeping... umm..." Shi Ping staggered to the top of the stairs, but turned back to look at her brother's tightly closed blue door. Remembering her reckless behavior last night, her body throbbed again. "My body is..." Shi Ping's mind drifted elsewhere, back to Shicheng's beautifully shaped penis, and her body unconsciously moved towards Shicheng's door. When Shi Ping touched the doorknob, she found it had been locked sometime earlier. "How... umm... locked? We never lock the door at home... ah... it's not a habit... yaha..." Shi Ping leaned against the doorway, panting heavily, almost collapsing, her weight pressing against the blue door. "My brother... is inside... ah... I want to go in and suck him... oh ah..." Shi PingAlmost unconscious, Shi Ping's physical urges drove her to break down the door. "No...no...water...drink water..." Parched, Shi Ping used the last of her strength to slowly walk downstairs. "Ah...I can't...ah..." With her last ounce of strength, Shi Ping collapsed onto the living room sofa like a deflated balloon. The pleasure in her nipples was unbearable, and she was once again aroused. "Ah...little brother...I'm so thirsty...I want more..." Shi Ping's body was both shy and burning hot, her complex emotions contorting her face as her hands slowly pulled up her panties. "My body...I can't take it anymore..." Shi Ping completely gave up her mental struggle, letting her fingers massage her clitoris, indulging in the pleasure of masturbation. **************************************************************************************************
On the other hand, Shi Cheng, who hadn't slept all night, lay in bed, staring blankly at the ceiling. A closer look revealed extremely dark circles under his eyes. Because of his sister's surprise attack the previous night, Shi Cheng's penis had been hard all night, and afterwards he had no choice but to lock the door and masturbate at least twice. Hearing the sound of his sister's door opening at noon, Shi Cheng nervously swallowed. When he saw Shi Ping trying to turn her doorknob, he jumped out of bed in a panic. He was relieved that his sister hadn't broken in because he locked the door last night, but also a little disappointed. *Ring ring ring* Shi Cheng's phone suddenly rang. "Hello… Xin… Good morning… um… um… just woke up…" Yu Xin called early in the morning, and Shi Cheng quickly cleared his throat. "Will you come later… okay… I'll let my sister know, um… see you later." Shi Cheng hung up the phone, his face still staring blankly at the ceiling. On Saturdays, aside from bedtime, the two would spend the whole day watching TV on the sofa, or taking their laptops downstairs to the dining table. Yu Xin rarely came over at lunchtime. "What's my sister doing downstairs?" After yesterday's passionate encounter, the younger brother couldn't help but wonder what his sister was doing downstairs. Driven by curiosity, Shi Cheng opened his bedroom door and tiptoed towards the stairwell, promising himself he'd leave immediately if he saw anything inappropriate. "Huh… why is she still sleeping?" Shi Cheng frowned when he saw his sister resting in the living room. "Idiot, you'll catch a cold." Shi Cheng tiptoed to his sister, but then his blood boiled again as his eyes fell on her revealing outfit. Shi Ping was wearing a white tank top, her full breasts bouncing with her breath. Most provocatively, one breast had somehow slipped out of the tank top, the nipple heaving intensely in front of Shi Cheng. Her panties had somehow come off, hanging limply at her feet. The sharp-eyed Shi Cheng also noticed that his sister's vulva was soaked with sweat or something else. "Why aren't you wearing a bra...and pants?" Shi Ping was always very conservative in her home attire, never daring to show her impressive F-cup breasts to her brother, so she always had the habit of wearing bandages at home. This time, her breasts and vulva were openly displayed before Shi Cheng, making him unsure where to look. "Huff...huff..." Shi Cheng stood in front of the sofa, hearing his sister's deep sleep, her jade-like body exposed in her tank top. The perceptive Shi Cheng knew that his sister must have masturbated until she collapsed from exhaustion. "You've worked hard... this body..." Shi Cheng was already used to Shi Ping's periodic masturbation. Their rooms were separated only by a thin wall; no matter how hard he tried to ignore it, he would still hear. Shi Cheng knew this was a physical issue for his sister, so he had never brought it up. But this was the first time Shi Cheng had ever seen anything like it. His eyes were glued to his sister's nipples and large breasts, completely captivated. Under this intense temptation, his penis hardened again. Shi Cheng carefully observed his sister, completely forgetting about her in the face of desire. "Just one... it'll be a tie." Remembering how his sister had attacked him while he was asleep yesterday, a mixture of revenge and curiosity rose within him. Driven by a strong impulse, he gently reached his trembling hand towards Shi Ping's large breasts. Shi Cheng's hand gently rubbed Shi Ping's soft breasts. Shi Ping's large breasts, like water balloons, writhed powerfully several times, as if alive, eagerly responding to her brother's fingers. "I'm going crazy..." The younger brother gasped as he looked at his sister's soft breasts. The girl in front of him was his own sister... The thought made Shi Cheng's heart race uncontrollably, and his penis swelled so much it felt like it would burst out of his pants. This forbidden incestuous feeling fueled Shi Cheng's lust, making it impossible for him to stop. Shi Cheng couldn't help but reach out and caress the outer edge of her breasts, gently stroking them from bottom to top, the soft and elastic touch driving him wild. When he touched the tip of her nipple, he couldn't help but gently rub her erect nipple with his index finger. "Mmm..." When the younger brother's hand touched her nipple, the older sister's body seemed to tremble slightly, and she suddenly let out a soft moan. Shi Cheng was startled and quickly withdrew his hand. "Ugh..." Shi Ping kicked her foot lightly, her body swayed slightly, and her breasts swayed from side to side. Soon after, she fell into a deep sleep again. Unable to resist the immense temptation, Shi Cheng's hand once again boldly reached for his sister's chest, kneading her firm, full, and rounded breasts. The overwhelming pleasure, coupled with the pudding-like pinkness of her breasts, drove the younger brother completely mad. He was intently enjoying his sister's large, soft breasts, oblivious to Shi Ping's flushed face, biting her lower lip, and slightly furrowed brows. "So big, so beautiful..." Shi Ping exclaimed, her hand gripping harder and harder, her fingers flicking Shi Ping's erect nipple with abandon. "Ahhh~" Shi Ping let out a moan like an AV actress. Startled, the younger brother retreated from the sofa, trying to run upstairs, when suddenly something grabbed his arm. "No... don't move..." Shi Cheng turned his head and saw that his arm was being held tightly. His sister was looking at him with teary eyes, biting her lower lip, and swaying her enormous breasts. "You...you've been pretending to be asleep the whole time..." Shi Cheng swallowed hard, seeing his sister's unsatisfied expression and disheveled appearance. "Mmm..." Shi Ping nodded demurely. His sister's unwavering answer made Shi Cheng's legs almost go weak. He hadn't expected his sister to be even more direct than him. He suddenly thought that if he had woken up halfway through yesterday's orgasm, he really wouldn't know what to say to her. "Little brother...you're touching my nipples...so hard...mmm...my body...it's so uncomfortable." Shi Ping's other hand reached for her exposed breast, kneading it roughly in front of Shi Cheng, emitting soft, feminine moans, her eyes fixed on him with a burning gaze. "Little brother...look here..." Shi Ping stretched her legs onto the sofa, forming a perfect M-shape, her entire pink vulva completely exposed to Shi Cheng's eyes. Her body was deliberately displayed to him, clearly intended to tempt her brother into committing a crime. "Sister... I'll call Yu Liang for you..." Seeing his sister's lewd appearance, his little brother in his pants had become harder than iron. With the last shred of his rationality, Shi Cheng nervously shook off his sister; the forbidden relationship between them absolutely could not be broken. "I don't care... Ah... I can't hold back anymore... I only want you... You have to take responsibility..." Shi Ping squeezed her breasts together with her arms, lightly biting her fingers, swaying her body from side to side towards Shi Cheng, her breasts bouncing irregularly like water balloons. "Mmm..." Seeing those swaying breasts, Shi Cheng felt dizzy, especially since it was the first time he had seen his sister's body so exposed. Shi Cheng's hormones surged rapidly, and he couldn't help but take a small step towards his sister. "Hmm... Come here... Hey!" Seeing her brother approaching her, Shi Ping excitedly licked her lips and forcefully grabbed Shi Cheng's arm, pulling him into her arms. "Ah... Sister... Pfft!" Shi Cheng lost his balance and his face slammed into his sister's chest. When his face rubbed against her breasts, he could almost hear her moaning. "Ugh..." Shi Cheng's entire face was pressed against his sister's chest, his cheeks perfectly sandwiched between her breasts, like a masturbation session. Shi Ping stroked her breasts and squeezed them together forcefully. "Little brother... does it feel good?" Shi Ping kept shaking her body, pressing Shi Cheng's head against the water balloon, as if trying to squeeze out juice, making both of their faces flush red. "Sister... um... I have a girlfriend." Shi Cheng knelt in front of the sofa, his head wedged between his sister's breasts, almost unable to breathe. This must be what it felt like to be in ecstasy. "Now... um... what are you still talking about? You belong to me now..." The pleasure from Shi Ping's breasts made her lift her head involuntarily, her hands kneading her breasts nonstop. "Pfft... Sister..." Unable to breathe, Shi Cheng quickly lifted his face from Shi Ping's breasts, nervously looking up at his sister, their faces pressed very close together. "Little brother... give it to me... mmm... tsk... I love you... mmm..." Immersed in desire, Shi Ping could no longer control her cherry lips, stretching her neck forward to eagerly press them against Shi Cheng's mouth. Her tongue gently pried open his tightly closed lips, tenderly licking his teeth, finally penetrating deep into his mouth. The unrestrained Shi Cheng frantically licked and spat her saliva into her brother's mouth. "Mmm... mmm... Sister... mmm..." Shi Cheng responded tremblingly to his sister's passionate breath, his trembling hands uncontrollably climbing upwards. "Mmm... okay... mmm... breasts... you can touch them." Shi Ping passionately kissed her brother, her hands gently caressing Shi Cheng's arms, leading him towards her chest. "Mmm... Sister's breasts...so soft...so big..." Shi Cheng's hand covered his sister's breasts, his hand unable to resist the temptation, following Shi Ping's lead, he began to knead them, gently squeezing her breasts clockwise and counterclockwise. Waves of pleasure made Shi Ping let out lewd moans. Hearing his sister's voice was truly driving Shi Cheng crazy. "Sister...chu...mmm...chu...""...I..." Shi Cheng gradually stood up, his lips still pressed tightly against Shi Ping's as he changed position. He sat down next to his sister on the sofa, making it easier for his mouth and hands to move. One hand, in particular, disobeyed his sister's completely exposed, hairless vulva. "Ah...brother...here...it's so embarrassing." When Shi Ping's vulva was touched by Shi Cheng, Shi Ping exclaimed in surprise. "Sister...your vulva...is so beautiful," Shi Cheng praised in amazement. One hand vigorously kneaded Shi Ping's large breasts, while the other hand gently rubbed the surface of Shi Ping's vulva up and down, as if trying to open it up, making Shi Ping's vulva red and swollen. "Ah...brother...if you rub like this...I'll want it..." Shi Ping uttered in a lustful tone, her hand slowly stroking Shi Cheng's crotch, touching his hardness up and down. "Sister, it feels so good." The two of them touched each other's genitals back and forth, their hot lips passionately kissing, like a couple who hadn't made love in a long time, their body temperatures rising continuously. "Little brother... take off your pants... shoot inside me..." Shi Ping licked her lips seductively, her hand gently touching the edge of Shi Cheng's pants, pulling them down lightly. "Sister... we're siblings... this isn't right..." The forbidden incestuous feelings made Shi Cheng even more excited than when he first made love with Yu Xin. Although he struggled internally, his honest body had already revealed layers of desire. Although he said no, his hands followed his sister as he pulled his pants down. "Don't call me sister... call me Shi Ping..." Shi Ping's hand climbed up the edge of his underwear and pulled it down forcefully, and his hard penis sprang out, swaying so much that Shi Ping was very happy to see it. "Wow...that's amazing..." Shi Ping couldn't help but exclaim in amazement. Without any warning, Shi Ping immediately opened her mouth, bent down, and swallowed the entire penis. As she swallowed it all the way in, she slowly raised her head, spitting the entire penis out of her mouth. When it came out, the penis was still erect and standing high between her legs. The only difference was that the entire penis was now covered with Shi Ping's glistening saliva. "Sister...why so suddenly..." Shi Cheng exclaimed in surprise. "Do you like it...I love this taste so much..." Shi Ping looked at her brother... Seeing her brother's reaction, Shi Cheng chuckled amusedly. "Sister... this... won't do..." Looking at his sister's reaction, Shi Cheng felt a surge of guilt. His sister would never normally say such things; it must be her body that had made her so promiscuous. "Sister... I still..." Just as Shi Cheng picked up his pants to put them on, his sister suddenly stood up from the sofa, pulled off her tank top, and her enormous breasts bounced out forcefully, her entire naked body fully exposed to her brother, making Shi Cheng's jaw almost drop to the floor. "Brother, we... we... let's go upstairs and do it..." Shi Ping took her brother's hand and led him to the room. Shi Ping's perfect buttocks, her doll-like white skin, and her bouncing breasts made Shi Cheng's penis even harder. His semen was already flowing freely from his glans, forming a straight silver line on the stairs, making Shi Ping's heart flutter with delight. As they walked towards the room, Shi Ping frequently turned her head, gazing lovingly at her younger brother. Her hand constantly gripped Shi Cheng's penis, giving him a few strokes every few steps. What should have been a 30-second walk took them almost three minutes. Upon reaching Shi Cheng's room, Shi Ping eagerly pushed her brother onto the bed, her body pressing passionately against him. Her large breasts pressed tightly against his chest, and she sucked on his neck and behind his ears like a lustful woman. Her hands excitedly reached for his clothes, pulling them up. "Sister…slow down…" Shi Cheng looked at his sister's infatuated state, his neck turning bright red, purple veins bulging, and his fists clenched tightly. "Chirp...tsk tsk...hiss...chirp...the clothes are in the way..." Shi Ping tried her best to remove Shi Cheng's clothes, and the two of them were completely naked. Their hot skin was pressed tightly together, and their genitals were rubbing against each other from time to time. When their nipples touched, Shi Ping's body felt like it was being electrocuted, and her body trembled. Her hard nipples gradually secreted a thick milk, making their chests wet and slippery. Excited, Shi Ping pressed all her strength against Shi Cheng's chest and began to rub her breasts back and forth in a large circular motion on Shi Cheng's chest, like an erotic massage. Her lips also teasingly brushed against Shi Cheng's lips from time to time. "Sister...you're so horny... *kiss*...tsk tsk" As if to silence her brother, Shi Ping's lips pressed tightly against Shi Cheng's. Unable to resist the temptation, Shi Cheng responded passionately to his sister's lips, his hands tightly embracing Shi Ping's slender waist, leaving no gap. Their lips were passionately pressed together, as if trying to devour each other, their tongues relentlessly attacking each other's mouths, saliva flowing down like a river, almost soaking Shi Cheng's pillow. "Sister... *kiss*...your lips smell so good... *kiss*... *hiss*" Like two wild beasts in heat, their bodies writhed excitedly on the bed, kissing from head to foot, from the bed to the floor, their lips as if glued together, inseparable, constantly tasting each other's saliva. Sweat soaked their hair to a pulp; if anyone told them they were siblings, no one would believe it. "Chu...you too...mmm...you kissed so well...chubo..." The two kissed passionately for nearly five minutes, their lips reluctantly parting, a lot of saliva clinging to their lips, their breaths warm against each other. "Let me give you a rub...okay?" Shi Ping's eyes were filled with adoration, her hands involuntarily stroking Shi Cheng's rock-hard penis. Her hands gently caressed Shi Cheng's testicles and base, skillfully pulling down the foreskin to expose the large, red glans. When the foreskin rubbed against the glans, Shi Cheng let out a deep, masculine growl, filling Shi Ping with a sudden sense of accomplishment. "So hard...you horny toy..." Shi Ping licked her red lips, her body gradually moving downwards, her lips lightly touching Shi Cheng's nipples, her legs slowly wrapping around Shi Cheng's penis, rubbing the erect shaft with the inside of her calves. Shi Ping gradually bent her legs, clamping the penis between her calves and thighs, and began moving her fair, tender legs up and down. "Oh...oh..." Shi Cheng raised his head, letting out a comfortable moan. Even Yu Xin hadn't used footjob to help him ejaculate yet. "Does it feel good..." Shi Ping's rosy face and incredibly cute expression, combined with her voice that made men weak, made Shi Cheng's buttocks tighten, and sweat pour down his face. "Mmm...mmm...mmm..." Shi Ping vigorously moved her thighs, her head occasionally glancing back at the large penis covered in white foam, her mouth constantly kissing and licking Shi Cheng's nipples, her empty hands constantly scratching various parts of Shi Cheng's body. The whole action lasted for more than two minutes. Apart from the panting of the man and woman, there was nothing else in the room, making the whole atmosphere even more lewd. Shi Ping's feet suddenly stopped, her whole body moving down to her lower body, her breasts sliding tightly against the penis, just like yesterday, her face pressed against the lewd penis, and she showed an eager and excited expression. Shi Ping's hand touched his penis and began stroking its shaft up and down. She inhaled deeply the pungent smell of it. "Such a lewd smell…any girl would go crazy if she smelled this," Shi Ping thought excitedly, watching the penis bounce around. She uttered obscene words and couldn't resist pressing her lips to it, gently sucking and drawing in all the pre-ejaculate from the glans. "Such a wonderful taste…ah…" Shi Ping's tongue lightly licked the semen from her lips. A tiny bit of milk spurted from her breasts, which drooped due to her kneeling position. The instant pleasure caused her vagina to gush with vaginal fluid. "So lewd…ah…a lewd body…" Shi Ping looked at her body, which seemed ready to ejaculate at any moment in front of her brother, feeling both proud and shy. "We... mmm... ah... chu... tsk tsk..." Shi Ping's tender lips enveloped Shi Cheng's penis once again. Compared to yesterday's gradual oral sex, today Shi Ping swallowed and spit forcefully, as if using a deep throat to push the penis all the way into her throat, and a few tears flowed from her eyes. "Ah... ah ah... so good... Shi... Shi Ping..." The younger brother called Shi Ping's name nervously. Because of the passionate caresses between the two just now, the pleasure from his lower body was even stronger than yesterday, as if he was about to ejaculate at any moment. "Ugh... Shi Ping... wait..." Shi Cheng quickly pulled back, his penis sprang out of his sister's mouth, with a strand of saliva still attached to his lips. Shi Cheng quickly breathed a sigh of relief. "Wait... little brother... don't run away... ah~" Shi Cheng lay down on the bed at a 180-degree angle, wrapped his arms around his sister's waist, and pulled Shi Ping onto his body, letting his sister's face lie on his thighs facing his erect penis. The two of them thus formed a lewd 69 position with the woman on top of the man. "Little brother... this position... it's so erotic!" Shi Ping turned her flushed face to look at Shi Cheng beneath her, biting her lower lip shyly. Shi Ping had been with different men this month, and this complete skin-to-skin contact was offered to her blood-related little brother. Especially this kind of position that both sides couldn't resist, making Shi Ping's buttocks sway excitedly before her brother's eyes. "Only I'm enjoying it, it's not fair... hiss hiss hiss." As soon as Shi Cheng finished speaking, he raised his head and began licking Shi Ping's pink clitoris, gradually deepening the sensation. "Ah ah... little brother... you pervert... ah... chu... tsk tsk..." Feeling wave after wave of pleasure, Shi Ping quickly buried her face in Shi Cheng's thighs, responding passionately with her mouth and saliva, moving her head up and down forcefully, swallowing Shi Cheng's penis. "So good... Shi Ping... sister... chu..."Shi Cheng eagerly licked Shi Ping's vulva. The intense pleasure made Shi Ping's legs spread wider and wider, and she gradually began to rhythmically sway her buttocks back and forth along Shi Cheng's tongue. Seeing this, Shi Cheng quickly grabbed Shi Ping's buttocks and took her clitoris and surrounding area into his mouth. While slowly sucking, he used his fingers to massage around the vulva, exposing his sister's clitoris. A second later, he sucked hard, making the sound of love juice louder and causing Shi Ping to cry out in excitement. "Ugh...so amazing...I want to too..." Not to be outdone, Shi Ping used her wet tongue to penetrate the junction between the glans and foreskin, repeatedly using her tongue to draw the foreskin back in a circular motion. Her lips pressed tightly against the urethral opening, sucking with varying intensity, drawing in every bit of white prostatic fluid. Her hands also teased the testicles with unfinished pleasure. The alternating action of sucking and licking brought Shi Cheng wave after wave of pleasure, and his licking speed increased. "So good...sizzle...little brother...it feels so good...why...smack...we've never done this before..." Shi Ping had never felt so lewd in her many encounters with men, especially with their bodies completely naked, the hot contact of their skin amplifying their body temperature and the room's temperature. This 69 position was definitely more pleasurable than one-sided blowjobs. "Sister's body is so horny..." Shi Cheng used the taste buds on the tip of his tongue to press against Shi Ping's clitoris, continuously stimulating it in circular motions, alternating between strong and weak pressure, causing Shi Ping's vulva to continuously flow with copious amounts of love juice, and her milk had already sprayed out in a mess. This series of attacks brought Shi Ping's excitement to its peak. "Like this... ah ha... so intense... I'm going to come... let me... ah ha... rest for a bit," Shi Ping gasped with pleasure, pulling her body away from Shi Cheng and lying on her side next to him, her chest heaving exaggeratedly, her nipples hard and erect, and milk slowly secreting. Not letting her sister rest at all, Shi Cheng playfully lay on her side towards her sister, gently rubbing her vulva from bottom to top with his fingers, causing her sister to gasp in surprise. Suddenly, she felt a warm sensation in her vagina. Looking down, she saw her younger brother's face buried in her vagina, sucking again. "Ah... I hate it... Mm... Chu chu... Zzz... Tsk... Mm..." Not to be outdone, Shi Ping turned her head to the side and took her brother's penis into her mouth. To increase the pleasure from their genitals, they both raised one leg in unison, their thighs clamping their heads together, enhancing the pleasure from their private parts. Shi Ping played with Shi Cheng's penis with her hand, and with one hand, she put her fingers in her mouth to lubricate them, slowly inserting them into his anus, almost making him ejaculate. "Oh dear... not there... Sister," Shi Cheng, not wanting to climax first, quickly inserted his fingers into her already soaking wet vagina, licking it with his tongue and teasing her inside. This made Shi Ping stop her hand movements, moaning comfortably. "Ah...so good...chu...tsk tsk...so good..." Shi Ping forcefully took the penis into her mouth, licking the glans with her tongue while rubbing it with the inside of her mouth, trying to channel her voice into motivation, continuing to respond more passionately to help her brother swallow and spit. "Suck slower, sister..." Shi Cheng parted her labia with his fingers, his tongue passionately licking her erect clitoris, his mouth as if it were his own possession, licking her entire vulva clean, playing with every part of her genitals before sucking on her clitoris. His exquisite technique almost sent Shi Ping to heaven. The sounds of their swallowing saliva rose the temperature of the room. The lewd sucking sounds made the whole scene even more seductive. Just as they were getting into the swing of things, Shi Ping suddenly pulled her mouth away from her brother's penis, and her whole body suddenly stood up from the bed. "Sister... what do you want to do..." Shi Cheng's pleasure was interrupted. He looked up at his sister, puzzled. "I want... um... I really want to make love to you..." Shi Ping spread her legs and stood directly above Shi Cheng's erect penis, like Guanyin sitting on a lotus, slowly lowering herself down. Her vaginal opening pressed tightly against Shi Cheng's penis. She first rubbed her vaginal opening back and forth against his shaft, her fingers on her lips, like a little woman, wantonly demanding, "Sister, no... we absolutely can't do this..." Hearing Shi Ping's explosive statement, Shi Cheng quickly raised his head, but Shi Ping pressed down on him with her body weight. "Don't run away..." Shi Ping gently grasped Shi Cheng's hard penis, aligning her vaginal opening with his clitoris, constantly rubbing the head of his penis against her mysterious opening. "Sister... this is absolutely not allowed!" Shi Cheng shouted nervously. He hadn't thought about penetration at all. He only knew that if his penis entered his sister's vagina, the relationship between the siblings would be drastically different from now on. "Mmm...mmm..." Shi Ping kept rubbing her vulva open with the glans of his penis, her brows furrowing as her body sank down. "So tight...I...can't...get in..." Feeling her tightly closed vulva, Shi Ping quickly lifted herself off Shi Cheng, put her fingers in her mouth, moistened them with saliva, and gently stroked her vulva, rubbing it open. She also pulled away from Shi Cheng. "Ugh...ah..." Shi Cheng suddenly felt waves of pleasure in his lower body. He looked up and saw Shi Ping trying to swallow his penis. "Chu...mmm...a little wetter...it'll be easier to insert..." Shi Ping tasted his penis passionately, gently brushing the hair behind her ear. Her profile made her already beautiful face even more stunning. "Ugh...ah...sister..." Shi Ping climbed onto Shi Cheng again, her vulva rubbing against his hard penis once more. "This time, it's really coming, my good little brother," Shi Ping said, her face flushed as she looked at her brother. She aligned her vagina with his penis and slowly lowered herself down. "Sister...no...no!" Shi Ping murmured, her body sinking deeper and deeper, her warm vagina gradually enveloping the glans. "Little brother...it's going in...it's going in..." Shi Ping became increasingly excited, the glans sinking deep into her vagina, almost breaking through her hymen. Shi Ping cried out excitedly. "Ring ring ring ring!" Shi Cheng's phone suddenly rang, snapping them both back to reality. Shi Cheng quickly pushed his sister away, accidentally pushing Shi Ping off the bed and onto the floor. "I'm...I'm sorry...sister," Shi Cheng said nervously, scrambling off the bed and helping his sister up. "Ugh...ugh...it's always interrupted...my body really can't take it..." Shi Ping sat on the floor, her hair disheveled, her hands still caressing her vagina and breasts, her unsatisfied appearance making one want to have sex with her again and again. "Your body..." Shi Cheng looked closer and noticed that Shi Ping's nipples were secreting milk, which was dripping down like raindrops. She was so surprised that she couldn't speak. "Wait...wait...wait a minute, sister." Seeing the milk on Shi Ping's nipples, Shi Cheng stood up awkwardly, picked up her ringing phone, and went to the desk to press the call button. "Hello...hello...Yu Xin?" …Ah…” Shi Cheng, halfway through his speech, suddenly felt a wet sensation in his lower body. Looking down, he quickly saw Shi Ping standing in front of him, gently sucking his penis. “Ah…it’s okay…are you there yet…ah…” Shi Cheng felt like someone caught having an affair, the tension intensifying his pleasure. His penis was erect, pointing towards the ceiling. Shi Ping was also happily sucking on his penis, her hands tightly gripping his buttocks, her head swaying back and forth, her breasts bobbing in front of his eyes, making his buttocks tighten. “Ah…that’s…the sound of me eating noodles…it’s hot…ah…ah…” Shi Cheng’s buttocks tightened more and more, his waist arching, making it easier for Shi Ping to take it into her mouth. Shi Ping responded happily with saliva, her hand reaching to the base of his penis, simultaneously stroking it with her hand. The simultaneous pleasure from oral sex and handjob made Shi Cheng almost lose his balance. “Ah…ah…now?” "Where are you... Ugh!" As Shi Ping's head shook violently, Shi Cheng felt something poised to erupt, ready to burst forth at any moment. He quickly concentrated all his strength in his hips, preparing to offer his bodily fluids to his sister again. "It's really okay... Ah... Ah... Ah... Sorry... Wait for me a moment." Shi Cheng put the phone on the table, quickly pulled his penis out of Shi Ping's mouth, and squatted down, aiming his penis at Shi Ping's mouth. He held the back of his sister's head with one hand and began to vigorously stroke his penis with the other. "Little brother... Shoot it all into me... I want to drink your semen... All of it... Not a drop left..." Shi Ping, enjoying herself, had her head held in place by Shi Cheng, her mouth wide open, excitedly welcoming this long-awaited wave. "Sister... You're so lewd... I'll give it all to you... I'll pour it into your mouth." Shi Cheng's hand moved faster and faster, almost crossing the threshold. "I'm the most lewd... I'm the most lewd little princess in front of you... Give me some... Give me..." Shi Ping eagerly opened her mouth, shaking her breasts. "I'm going to cum... Catch it... Shi Ping... I'm going to cum... Oh oh oh oh!" Shi Cheng's buttocks clenched tightly, letting out a low growl. The pleasure of ejaculation reached his urethra. In the blink of an eye, the door to the room was suddenly opened. "Cheng, I couldn't find you in the living room..." Yu Xin walked into the room without warning, holding the spare key that the siblings had given her a while ago. "Yu, Yu Xin... Oh oh oh oh!" Shi Cheng turned his head in surprise, but the pleasure of ejaculation was unstoppable. Thick semen gushed out of his urethra like a jet of water, shooting straight into Shi Ping's mouth. It even made a sound when it came out.A hissing sound rang out. "Ah...so much...glug...so thick...ouch...glug glug." As if oblivious to the awkward scene, Shi Ping drank one stream after another of Shi Cheng's warm bodily fluids, much of the semen even filling the area around her mouth, the thick semen hanging around her lips like a soup. Yu Xin stared wide-eyed at this disgusting incestuous live sex show. The naked younger brother held his sister's head with one hand, and with the other, he pointed his penis at her mouth, several streams of white semen shooting from his penis. The sister, kneeling on the ground, eagerly opened her mouth, swallowing the hot, lewd drink. Especially her blissful face, which made one feel uncomfortable, and more importantly, the man was her boyfriend. "Yu Xin...let me explain...ahhhh!" Shi Cheng nervously tried to explain the whole story to Yu Xin, when his sensitive glans was suddenly enveloped by a soft, wet sensation. Looking down, he saw that Shi Ping was cleaning her own glans with her mouth. "Shoot so much... glug, I'll help you... *kiss*... clean it up... *tsk um*... *kiss*... I love it... I want to drink it every day..." Shi Ping, in heat, didn't notice the awkward looks from the other two, letting her body react like a beast, her mouth constantly kissing the large glans, her hand constantly stroking the base of the penis, as if trying to squeeze every last drop of semen from her phallus. "Sister... stop..." Shi Cheng nervously looked at Yu Xin at the door, quickly pulling his penis out of Shi Ping's mouth, leaving her mouth still making a sucking sound. Yu Xin stared at this lewd scene, her mind completely blank. "You...you guys... ah!!!" Yu Xin roared, angrily slamming the door shut and fleeing the house. "Smack...smack...mmm...tsk tsk...delicious...so delicious...smack..." Shi Ping, out of the loop, sat on the ground, licking the semen from her lips with her fingers, scooping it up and sweeping it into her mouth like licking sauce, while constantly kissing her fingers. "Sister...wake up..." Knowing it was Shi Ping's body acting up, Shi Cheng couldn't bear to blame his sister, so he patted her shoulder forcefully, trying to bring her back to reality. "I still want to be...brother...for me..." Like a little girl, Shi Ping looked up at her brother with teary eyes, grasping his now-soft penis and starting to help him thrust. "No!" Shi Cheng forcefully shook off his sister's hand, causing Shi Ping to lose her balance and hit her head on the edge of the table with a thud. "Ahhh...it hurts..." Shi Ping clutched the back of her head, screaming in pain. "Ah... Sister, I'm sorry." Realizing his rash actions, Shi Cheng quickly knelt down to check on his sister. "My body... it wasn't intentional... it wasn't what I wanted... but... your semen..." Although Shi Ping was brought back to reality, the emptiness in her lower body once again plunged her into the abyss of desire. One hand suddenly touched her large breasts, and she involuntarily began to rub them again. Shi Ping knew that her body had reached a point of no return, especially after consuming her brother's semen. She had become a wanton woman, and whoever appeared in front of her, the only thing she could do was to have sex with them for three days and three nights until both of them were exhausted. "Your body... how did it become like this?" Shi Cheng looked at his sister in disbelief, taking several steps back. "I don't know... I don't know... Brother... help me... help me... fuck me! Put it in my pussy!" Shi Ping rubbed her pussy and large breasts intensely, constantly shouting. Shi Cheng nervously stared at the door, thinking of Yu Xin who had just run out. If she did something he would regret, he would never forgive himself. But he had protected his beloved sister since childhood, and if he didn't take good care of her, he was afraid something bad would happen. Shi Cheng faced a difficult dilemma. "..." "Sister, wait for me, I'll make love to you properly when I get back, wait for me," Shi Cheng could only coax his sister before quickly running out the door. "Don't lie to me...don't lie to me...I'll wait for you...ah...I'll wait for you in your room...mmm...ah..." Shi Ping could only respond to Shi Cheng's retreating figure while masturbating on the floor... "..." And all night long, Shi Cheng still hadn't returned home.
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The Switch for Lustful Breasts (Chapter Thirteen)

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