Chapter Nineteen of the Lustful Breast Switch

Word count: 11328
"Ding...ding...ding..." The loud bell seemed to announce the end of lunch break, and the once deathly quiet campus suddenly became lively again. The toilets were packed with sleepy-eyed students, all vying to be the first to grab a urinal during the five-minute break. In a first-year classroom, Shi Cheng was slumped over his desk in agony, his body almost completely paralyzed. "It hurts...what's wrong..." Shi Cheng's cheek was almost buried in the desk, his hands under the desk, constantly squeezing and massaging his crotch. If you didn't look closely, you'd think Shi Cheng was openly masturbating during lunch break. "Why does my lower body hurt so much?" The pain made it impossible for Shi Cheng to rest during lunch break, and the conversation with Yu Xin during lunch only exacerbated the pain. "Ugh...should I see a doctor...huh..." Shi Cheng suddenly saw Shi Ping standing outside his classroom window, her head bowed. "At a time like this... Oh my god..." Shi Cheng slowly stood up, clutching his crotch, and walked hunched over to the door. A group of sharp-eyed female classmates saw Shi Cheng's hunched posture and began to blush. "Sister... Sister? What are you doing in the first-grade classroom..." Shi Cheng scratched his head with one hand and pressed his crotch with the other. He glanced at Shi Ping in front of him, whose face was flushed, arms crossed over her chest, and who was panting heavily, as if she was about to faint. The perceptive younger brother immediately knew that something was wrong with Shi Ping and rushed forward, wrapping his arms around her waist. "Sister... What's wrong with you..." Shi Cheng held Shi Ping tightly, as if the pain in his lower body didn't exist. "I... I... Ugh..." Shi Ping slumped in Shi Cheng's arms, speaking weakly. This scene gradually caused a stir in the class. Shi Cheng quickly glared at the class, and the whole class was startled and turned their heads away. "Shicheng...come with me..." As soon as she finished speaking, Shiping quickly grabbed Shicheng's hand and slowly led him to a secluded corner of the stairwell. "Sister...where are we going...your face is so red!" Shicheng was completely bewildered as his sister pulled him into the stairwell. "Sister...what...uh..." Before he could even speak, his mouth was forcefully sealed by his sister's tongue. Shiping's tongue rapidly probed into Shicheng's mouth, intensely licking the inside of his mouth. Her hands also tightly encircled Shicheng's neck. Stunned, Shicheng didn't know where to put his hands, only waving them nervously in the air. "Sister...uh...if a classmate...sees...mmm..." Under Shiping's guidance, Shicheng's tongues involuntarily began to intertwine. Shiping felt the onslaught of her brother's tongue, continuously and intensely kissing and sucking on the tip of Shicheng's tongue. "Hoo... Mmm... Shicheng... I love you..." Shi Ping's lips parted slightly, and she gently bit Shicheng's lip with her teeth, sending a tingling sensation through her younger brother. Shi Ping glanced at him with her red-rimmed eyes, then slipped her tongue into his mouth again. Their tongues swirled in perfect harmony, filled with love. "Sister... Mmm... What are you doing..." Shicheng, remembering the cold war of the past two days and his sister's sudden, unexpected attack, was completely at a loss for words. He could only let the beautiful woman in front of him continue to ravage his lips. After kissing for an unknown amount of time, Shicheng suddenly felt a salty, wet sensation on his lips. He quickly looked up and saw that Shi Ping's eyes were already brimming with tears, which streamed down her cheeks to her lips. "Hey, sister... What's wrong?" Shicheng cupped his sister's face in his hands. The tears, like crystals, illuminated Shi Ping's beautiful face. "I...I...I'm fine...I just...miss you so much..." Shi Ping held back her tears and inner turmoil, hugging her younger brother tightly. Shi Cheng, seeing his sister acting strangely, slowly shifted his gaze to her chest. "Wow, sister...where's your bra?" Shi Cheng realized that Shi Ping's breasts were jiggle dramatically under her semi-transparent uniform, her hard nipples forming prominent points. "My bra...I..." Just as Shi Ping was at a loss for words, the bell for the first period rang, causing Shi Cheng to click his tongue in displeasure. Shi Ping hugged her brother tightly, like a fish struggling on shore, unwilling to let go. Shi Cheng, seeing his sister clinging to him so tightly, felt awkward and didn't know what to do. "Sister...you should tell me what's wrong right away," Shi Cheng said worriedly, looking at his sister's sullen expression. "I...I..." Shi Ping hugged her younger brother tightly, burying her head in Shi Cheng's chest. "Shi Cheng..." Shi Ping suddenly called her name, and Shi Cheng's ears perked up instinctively. "Tonight...I want to...do...with you..." As if knowing what his sister was about to say, Shi Cheng's face flushed. "Sister..." Shi Cheng swallowed hard, just about to speak, when heavy high heels suddenly came from upstairs. "Sister...I'll talk to you when we get home tonight...you go back to class first...okay?" Shi Cheng cupped his sister's face and gently reminded her. Shi Ping nodded to Shi Cheng, wiped away her tears, and quickly ran to her classroom. "Is she in heat again...? Doesn't seem like it..." Shi Cheng looked at his sister's back, scratching the back of his head, muttering to himself as he walked back to the classroom. Shi Ping clutched her chest tightly, cautiously weaving through the corridor, her body pressed against the wall as she watched the crowd heading towards the classroom. Suddenly, she felt two taps on her shoulder. Shi Ping turned around and saw A-Jie holding a folded bra, offering it to her. Seeing A-Jie's awkward expression, Shi Ping was completely at a loss for words. "Um..." A-Jie's eyes darted around guiltily. Shi Ping, seeing A-Jie's stammering, showed an impatient look. "Don't talk to me anymore..." Shi Ping was furious at A-Jie's cold indifference from outside the window, completely ignoring the evidence recorded on A-Jie's phone. Angrily, she picked up the bra and ran towards the restroom. "I... Ugh..." A-Jie sighed, helplessly walking back to the classroom. "Ugh..." Shi Ping sat on the toilet seat, constantly wiping her swollen vulva with toilet paper; a little semen still seeped from the inner walls. "It hurts so much... Will I get pregnant...?" Thinking about Coach Chen ejaculating inside her, Shi Ping sat on the toilet, her mind elsewhere, her eyes reddening again. "My body is dirty..." Thinking of the unpleasant things that had happened all day, Shi Ping couldn't help but sob. **************************************************************************************
As evening approached, Shi Ping silently went to the town where Shi Cheng worked. Standing in the middle of the brightly lit street, Shi Ping stared blankly at the noodle shops in the alleyways, her heart filled with mixed emotions. "I'd better not bother my brother..." Shi Ping turned and went alone to the pharmacy. "I never thought I'd need something like this..." Shi Ping looked at the pregnancy tests and birth control pills on the counter, her mood plummeting. She grabbed two tests and some pills, paid at the counter, and ran towards the public restroom. Once inside the women's restroom, she stood calmly in front of the mirror, looked at her melancholy expression, and sighed sadly. Thinking about the day's events, she reluctantly opened the packaging, took out a bottle of mineral water, and swallowed two morning-after pills in one gulp. "Ugh, cheer up," Shi Ping gently patted her face with water, looked in the mirror, and got up to head home. *Clang!* A series of shattering sounds echoed from the noodle shop. "Oh dear, I'm so sorry, my young man was a bit distracted today," the older woman quickly went to Shi Ping's side and helped pick up the plates and glasses from the floor with a newspaper. "Oh, Shicheng, school must be tough," said the gaunt grandfather sitting nearby, picking up his wine glass and smiling at Shicheng. "What are you talking about? It's obvious you're thinking about your mistress," a burly, barefoot man at another table chimed in, livening up the noodle shop again. "No, uncles, I was thinking about Auntie," Shicheng said, before a forceful slap landed on his head. "You're so disrespectful! Come here!" Auntie grabbed Shicheng's ear and dragged him behind her, causing the other customers to burst into laughter. "What's wrong with you today? You look so tired," Auntie fanned Shicheng with her apron, while Shicheng rubbed his red ears, giggling occasionally. "No...maybe...I didn't sleep well," Shicheng said, casually picking up a stack of plates. "Oh dear, put it down, put it down. It'll be a real hassle if you fall," the older woman urged Shi Cheng, snatching the stack of plates from his hands. "Thinking of spring... Shi Cheng," the owner, standing nearby, waved a ladle in the air a few times. "Why are you saying that too, boss?" Shi Cheng forced a smile at the owner. "I think you... should go home for today and come back tomorrow," the older woman patted Shi Cheng's back, saying helplessly. "No need, I can keep working, no problem," Shi Cheng quickly straightened his chest and shouted at the older woman, "If you say go home, then go home! Why are you arguing with me? We two can manage today!"
"Hmm... Okay, I'll come earlier tomorrow." Seeing the old lady's insistence, Shi Cheng had no choice but to agree. "Alright, alright, go home and rest early." The old lady slapped Shi Cheng's head again. "You'll make me sick!" Shi Cheng grabbed his coat and quickly slipped out the back door of the kitchen. Walking on the street, the cold wind made Shi Cheng shiver. His slow steps and the seemingly still time made Shi Cheng fall into deep thought. "Why is today so bad..." Shi Cheng's mind suddenly conjured up the image of Shi Ping. "Hmm..." A lot had happened today, and the first person Shi Cheng thought of was Shi Ping, which felt unbelievable. "I guess I still... can't let go of my sister..." Shi Cheng carefully considered the conversation in the stairwell and realized that he was starting to care more and more about his sister, and his desire to protect her was growing stronger. "Could it be... that I really... towards my sister..." Shi Cheng scratched her head awkwardly, her eyes suddenly noticing a shadow crouching not far ahead. Curious, she walked over to investigate. "Excuse me, are you alright...? Huh?" The woman crouching on the ground looked up, and Shi Cheng saw the most familiar person. "Sister...? What are you doing here? Why are you crouching on the ground?" Shi Cheng quickly helped her sister up, patting Shi Ping's uniform. "Um... why did you leave work early?" Shi Ping leaned unsteadily against Shi Cheng, her slender legs and recently injured lower body already exhausted from a day of walking. "I came home early to see you! Tell me, what are you doing here?" Shi Cheng asked anxiously. "Look... look how anxious you are... can't I come to the next town to buy things?" Shi Ping quickly shook the shopping bag in her hand, speaking awkwardly. "Then why are you crouching on the ground?" Shi Cheng looked at her sister's limp body and asked. "Girls' legs are sore...not sharp at all!" Shi Ping quickly moved away from her brother and took a step forward, but after only a few steps, she lost her balance and fell forward. Just before she fell, her hand was suddenly firmly held, and she fell back into Shi Cheng's arms, making her gasp. "Who's slow to react?" Shi Cheng hugged his sister and said with a smile. Shi Ping slowly raised her head, stared at her younger brother, and quickly looked away, blushing. Her brother seemed to realize something and turned his face away as well. "I'm telling you...how are you going to walk home like this?" Shi Cheng frowned deeply, looking at Shi Ping's silly grin, feeling a pang of heartache. "Mind your own business, you skipped work and then blamed me!" Shi Ping retorted. "Sigh..." Shi Cheng sighed, walked behind Shi Ping, and without saying a word, picked her up in a princess carry. "What...what are you doing? Put me down, it's embarrassing!" Shi Ping cried out nervously, afraid of falling. Her hands were still tightly wrapped around her brother's neck, looking just like a couple. "Do you want me to carry you on my back? We both know the consequences, right?" Shi Cheng muttered to himself, making Shi Ping suddenly remember something. "You understand me so well..." Shi Ping whispered. "What did you say?" Shi Cheng suddenly brought his face close, startling Shi Ping. "Nothing..." Shi Ping quickly turned her head away. The two walked like this for a while, and the pointing and whispering of passersby did nothing to deter Shi Cheng's determination. It was as if he only had eyes for his sister, staring at Shi Ping without letting go. His eyes were like those of a stalker, making Shi Ping's body increasingly hot, her nipples gradually hardening, and her pleasure gradually increasing. "You...you shouldn't keep looking at me...people will misunderstand," Shi Ping quickly looked away. "If they misunderstand, let them misunderstand...speaking of which..." Shi Cheng looked at Shi Ping very naturally, a smile suddenly appearing on his lips. "You seem to be enjoying this...you just said no, but now you're happily letting me carry you." "No way, I don't care, I want to walk by myself!" Shi Ping started to struggle, her slender waist and full hips twisting and turning against Shi Cheng. "Ouch, so heavy, just kidding, just hold me tight." "You busybody," Shi Ping said slowly, the fatigue of the day engulfing her body, coupled with the reassuring embrace of Shi Cheng, causing Shi Ping's eyes to slowly close. "Oh dear, cute little pig, asleep," Shi Cheng said, Shi Ping's ears suddenly perked up, and she opened her eyes to glare at Shi Cheng. "Haha, just kidding, you should rest for a bit, you've been working hard all day." "Mmm..." Shi Ping buried her head in Shi Cheng's arms and fell into a deep sleep. Back home, Shi Cheng gently carried his older sister upstairs like a doll and placed her on Shi Ping's bed. "Is she Sleeping Beauty... or Snow White..." Shi Cheng gazed at his sleeping sister, his hand softly stroking her hair. "Goodnight," Shi Cheng's lips slowly approached. "Mwah..." "Pervert..." As their lips parted, Shi Ping suddenly made a small murmur, her face flushed as she pouted and stared at her brother. "Eh... Ah... Damn!" Shi Cheng recoiled in shock, staring at Shi Ping in disbelief. "When... when did you get up?" Shi Cheng looked at his sister in surprise, unable to speak clearly. "It was you... saying Sleeping Beauty, Snow White..." Shi Ping retorted, pouting. "That was just..." Shi Cheng quickly tried to explain, but the words stuck in his throat. "I want to listen..." Shi Ping sat up in bed, patting the edge of the bed, signaling Shi Cheng to sit closer. "...Listen to what?" Shi Cheng sat cautiously on the edge of the bed, looking at the beautiful woman beside him. "Just sit here, okay?" Shi Ping patted the spot next to her again, and Shi Cheng slowly moved to his sister's side. Shi Ping looked at her brother with satisfaction, then gently rested her head on Shi Cheng's shoulder, her eyes slowly closing again. "Pretending to sleep again, lazy pig." To ease the awkward atmosphere, Shi Cheng couldn't help but joke. "Do you remember when we were little..." Shi Ping suddenly said slowly. "Huh?" "Our old house, we used to sit like this, close together, on the treehouse in the courtyard." "Let's not talk about childhood." Shi Cheng seemed to be avoiding something, looking up at the ceiling. "No way, I'm going to talk about it anyway. If it weren't for you always being with me... I..." Shi Ping moved even closer to Shi Cheng, gently taking his hand, like interlocking their index fingers. "What are you saying? If it weren't for my sister always being by my side since I was little, I would never be where I am today." Shi Cheng's hand tightened around Shi Ping's. Watching her sister's every word and gesture, Shi Cheng couldn't see Shi Ping as her sister anymore. In Shi Cheng's eyes, this girl was someone who usually pretended to be asleep, but acted strong in crucial moments. Her adorable face, long eyelashes, single ponytail, alluring breasts and long legs were stimulating her senses. Staring at her sister, the thought of Yu Liang becoming Shi Ping's girlfriend, being able to hold her waist, caress her breasts, enjoy her lips, and possess her entire body, filled Shi Cheng with intense jealousy. "Shi Cheng... thank you for being so good to me," Shi Ping suddenly said, catching Shi Cheng completely off guard. "You've always taken good care of me. I'm so happy to have you by my side," Shi Cheng smiled at her younger brother. That smile made Shi Cheng feel like his sister was suddenly growing further and further away. "Sister, what's wrong?" Shi Cheng quickly asked, suddenly noticing a tear streaming down Shi Ping's face. "I...my body...is so dirty, so dirty," Shi Ping cried, thinking about everything that had happened that day. "You...!" Shi Cheng was completely confused, thinking Shi Ping was simply describing her physical condition. "Your body isn't dirty at all, not at all," Shi Cheng said firmly. "I really don't like my body...I...sob," Shi Ping sat on the bed, sobbing, wiping away her tears with her hands, which broke Shi Cheng's heart. "Don't say that...I don't want my sister to change...my sister will always be number one in my heart," Shi Cheng suddenly hugged Shi Ping tightly, holding her close. Shi Ping was stunned by her brother's actions, nestled in Shi Cheng's arms, completely unaware of what her brother was trying to do.
"Shiping, promise me you'll never say your body is dirty again, okay? I don't want to hear that at all." Shicheng hugged his sister tightly, his feelings for her going far beyond the physical stimulation and male instincts and desires of the past few weeks. They had lived under the same roof for decades, protecting, spoiling, and loving each other. He was determined to help Shiping get what she wanted. As he grew and witnessed Shiping's changes, his feelings for his sister subtly shifted. It wasn't something that happened overnight. He vividly remembered how, during his encounters with Yuxin, he had repeatedly imagined Yuxin as his own sister. That ethical boundary had been deeply planted years ago. Now, Shicheng truly understood that he loved his sister; his love at first sight for Yuxin and his unwavering devotion to Shiping were incomparable. "Sister..." Shi Cheng slowly began to speak. "..." Shi Ping silently looked up, her swollen eyes making Shi Cheng feel truly reluctant to let her go. "Do you remember two or three days ago, when I rejected you in the morning?" "..." Shi Ping listened silently to her brother's words, completely at a loss for words. "That's because... I wanted to hear the voice from your heart, not just your body." "Shi Cheng... you..." Shi Ping's eyes widened as she looked at her brother, her surprise mixed with unexpected joy. "Now it's my turn to speak, Shi Ping, would you be willing to give me a little part of your heart?" Hearing this confession, Shi Ping sat frozen on the edge of the bed, her choked sobs ceasing. She turned her head to the side, unable to look directly at her brother. After a while, Shi Ping reached for a tissue on the bedside table, making a soft, sniffling sound. She sat back down next to Shi Cheng, hugging her curled-up legs, and leaned against his shoulder, resting her head on his shoulder. "It's so hard being with me. I'm your older sister, and we can't let anyone else know about us. There's also my body, which I can't control, and..." Shi Ping suddenly started talking non-stop, her voice trembling with a hint of tears. "I don't want your pity. I want you to tell me the truth," Shi Ping cleared her nose and continued. "Shi Ping, I really like you. There are so many things I want to do with you in the future, like traveling together, going on dates, and so on." "What about our boyfriends and girlfriends?" Shi Ping turned around, seemingly asking a very serious question. "I'll definitely handle my side. As for Shi Ping, I just hope you can leave a small part for me, even just a little bit..." Shi Cheng said slowly. "I..." Shi Ping lowered her head, her face suddenly flushing slightly. "I... in my heart... actually... you've already taken up more space than Yu Liang." Shi Ping raised her head again, and the two looked deeply into each other's eyes. Shi Cheng gazed at his sister's lips, their faces slowly drawing closer before they kissed deeply. "Mmm...smmm...smack...mmm..." Shi Cheng's hands encircled Shi Ping's waist, feeling the curves of her body through her uniform. The siblings had already established a relationship, though it was completely unacceptable to others. Their tongues unconsciously deepened into each other's mouths. Shi Ping didn't resist her brother, only nervously gripping his pulse with both hands. "Mmm...smack..." Held tightly in Shi Cheng's embrace, Shi Ping's body gradually warmed, the passion ignited by her brother burning within her. "Shi Ping, tonight, will you give yourself to me?" Their lips slowly parted, a thin strand of saliva still connecting their mouths. Shi Cheng asked without any shame. "Mmm..." Shi Ping nodded gently. Shi Cheng's hands lightly touched the buttons of Shi Ping's uniform, gently pulling it off. Shi Ping shyly turned her head away, letting her younger brother take the lead. Shi Cheng, holding the hem of her skirt, slowly backed down.
"So beautiful, such fair skin," Shi Cheng kept praising, pulling down the zipper of Shi Ping's bodice, revealing her two large F-cup breasts. "Shi Ping is so cute, so pretty, I want to cherish you forever." Shi Cheng picked up his sister and placed her on his lap, looking at each other in a woman-on-top position. Shi Ping shyly turned her face away again.
"Shiping, look at me." Shicheng turned his sister's face towards him, gently flicking her sensitive nipple upwards with his index finger, causing Shiping to cry out excitedly. "Ah... little brother, nipple... ah..." The pleasure from Shiping's nipple was almost unbearable, her whole body nearly collapsing into Shicheng's arms. "You really are the source of trouble, Shiping. No matter how your body changes, I still want you." Shicheng began excitedly circling his fingers around her areola, while his other hand, as if unwilling to lose the sensation of her breasts, boldly plunged his fingers deep into her heavy breasts, the pleasurable touch irreplaceable. "Ah... ah ah... don't keep playing with my nipples... it feels too good... ha..." Shiping tightly closed her eyes, her whole body arching back, her chest thrusting forward, constantly savoring the sensation of her brother's fingers. "Ah... my nipples, being played with like this, my crotch is... burning hot." Shi Cheng played with his nipples with all his might, his penis seemingly wanting to burst out of his pants, constantly thrusting upwards. "Ugh, Cheng... let me help you." Shi Ping's hand quickly grabbed the edge of Shi Cheng's uniform, quickly pulling down his uniform and pants, leaving the two of them completely naked except for their underwear. "Huff... we're... completely naked again." Shi Cheng breathed heavily, looking at Shi Ping straddling his crotch. "Ah... my penis is so hard... my penis is moving... ah." Shi Ping felt the throbbing penis inside her underwear, constantly pressing against her genitals, as if testing her limits. "It's so hard, Shi Ping, I can't hold back anymore!" Shi Cheng gripped the edge of his panties tightly, quickly pulling them down to reveal his already eager erection. Shi Ping followed suit, pulling down her panties and actively twisting her waist, letting the glans touch her opening, gently pressing against it. "Oh...like this...so soft." Shi Cheng tilted his head back, Shi Ping's soft labia giving his penis unprecedented stimulation. Her swollen labia majora seemed to melt, rubbing against the top of his penis. "Sister...can you move a little?" Shi Cheng gently asked, his hand lightly touching Shi Ping's waist. "Hmm? Like this." Shi Ping slowly twisted her waist in a riding position, moving back and forth, making Shi Cheng very happy. "Ugh...oh..." Shi Cheng's pleasure rushed to his brain, letting out a heavy sigh. "Ah..." As Shi Ping twisted her waist, both of them cried out at the same time. Shi Cheng's urethra was stimulated, while Shi Ping's clitoris was rubbed by the glans. "Is it...comfortable?" After a while, Shi Cheng asked slowly. Shi Ping nodded shyly, her eyes occasionally glancing at Shi Cheng, her body trembling with pleasure. "Then...let's try it one more time." Shi Cheng's hand supported his sister's waist, and Shi Ping carefully twisted her waist back and forth again. "Ah...ahhhhh" The feeling of friction between the genitals without penetration was both stimulating and irresistible. "Ah...the penis feels so good, I can feel the shape of your penis even outside my vagina." Shi Ping slowly rubbed the penis with her labia majora, the irresistible feeling constantly stimulating both of them. "The penis is getting harder and harder, pressing against my clitoris." The completely different pleasures completely aroused Shi Ping's desire, and her words became more and more erotic and bold. "Is Shih-ping feeling good?" Shih-cheng asked his sister gently, seemingly not wanting to miss a single detail. "Mmm...mmm," Shih-ping nodded, her face flushed. "Xiao-cheng's penis feels the best," Shih-ping said with tears in her eyes, smiling at Shih-cheng. Seeing Shih-ping's adorable expression, Shih-cheng couldn't help but move his hips, rubbing his glans intensely against Shih-ping's clitoris. "Ah...no, your penis is so hard, sticky, and my clitoris feels so good," Shih-ping twisted her hips, sometimes touching and sometimes rubbing her clitoris, stimulating his penis in different ways. As their genitals rubbed against each other, warm and thick fluid gushed from Shih-ping's vagina. "Ah, it's flowing from my vagina, what a lewd sound, so sticky and embarrassing, like peeing," Shih-ping moaned softly, her words uttered without restraint. "Sister's words are getting more and more lewd, this kind of sister is so cute," Shih-cheng praised excitedly, making Shih-ping feel incredibly shy. "It's...it's all your fault," Shi Ping lowered her head and gently pouted. "My penis is leaking fluid too," Shi Cheng said, feeling the white discharge from his prostate. "Both of us...both of us are leaking." "Then let's all...become sticky together." As she spoke, Shi Cheng reached out and gently fondled the full, voluptuous breasts in front of her, kneading them. Her thumb and forefinger formed a V-shape, constantly wrapping around the large breasts from bottom to top, occasionally releasing them to let them sway in front of her. "Ah, Xiao Cheng is so lewd, so lewd! Don't just play with the breasts!" Shi Ping cried out nervously, her waist rubbing faster. As if not wanting to lose to her sister, Shi Cheng generously drew circles on the breasts, kneading and teasing them. "Hoo... Ah... Shicheng... After my breasts were rubbed... Ah... My pussy too..." Seeing Shi Ping's reaction, Shicheng gently pinched her nipple and pulled it out slightly. "Ah... No~~ Don't touch my nipples!! Ahh ... "Let's climax together!" Watching Shi Ping's climax, his penis couldn't stop trembling. "Ahhh, this hard penis is so powerful, it's jumping around, ahhh, my clitoris is going to be squeezed and broken, I hate it!" Shi Ping started shouting, her eagerness to make her brother climax reaching Shi Cheng's ears. Shi Cheng couldn't help but start rubbing Shi Ping's vaginal opening. "Ha~ This hard penis is so big, it's going to go into my little hole, is the glans going to go into my little hole?!" Shi Ping smiled, constantly teasing Shi Cheng with her vagina. "Ahhh... the glans... rubbing against my clitoris,... the glans rubbing against my horny, horny clitoris..." Shi Ping made a series of sharp sounds, her waist twisting faster and faster, and the pleasure in her clitoris intensified. "Shi Ping...huff...huff..." The fleshy walls of her labia majora and her swollen clitoris rubbed intensely against his penis; ejaculation was only a matter of time. "Shoot, shoot, shoot! Shoot with your clitoris, let's go together!" Shi Ping screamed loudly. The two rubbed back and forth, and with Shi Ping's moans urging them on, Shi Cheng was on the verge of ejaculation. Suddenly, Shi Cheng let out a low growl, quickly pulled his sister away, his whole body trembled, his glans loosened, and a hot stream spurted upwards from his penis. The semen fell onto Shi Ping's body like a meteor shower, scattering on her hair, face, chest, and stomach. Shi Ping ecstatically accepted her brother's essence of desire, straddling Shi Cheng and panting softly, her tongue lolling out as she laughed like a lustful woman. "Ha...ha...Shi Ping, so good," Shi Cheng said, his breath ragged as he enjoyed the afterglow of pleasure, looking up at Shi Ping. After a while, their eyes met, and Shi Ping began to sway her body shyly. "Hoo...ha...sister...what's wrong?" Shi Cheng asked, puzzled, looking at his sister. Shi Ping suddenly looked at her brother with an incredibly erotic gaze. "I...I..." "Shi Ping...?" "I'm sorry...Xiao Cheng...your penis is still so big...so...I..." Shi Ping's hot love juice overflowed from her vulva, moistening Shi Cheng's penis. Shi Ping gently leaned over Shi Cheng, gently aligning her large, red nipples with his, and began to rub their chests together. "Your penis...is still...so hard..." Shi Ping involuntarily began to rub his penis, her labia rubbing from top to bottom. A lewd, wet sound rang out between their wet thighs, an extremely obscene and arousing sound.
"It's my duty as your girlfriend to make you ejaculate, so let's ejaculate from your penis again," Shi Ping suddenly said to her brother, lifting her upper body. "I love it like this..." Shi Cheng felt the love fluid flowing from his sister's vagina. Her high-pitched breathing and waist movements made it easy to deduce that Shi Ping was the one who was truly unsatisfied. Suddenly, Shi Cheng got up from the bed, rolled over, and pinned Shi Ping to the bed, assuming the standard woman-on-top position. "Shi Ping, I want to stay like this forever, never stop." Even though he had already ejaculated once, Shi Cheng still greedily pursued his sister's body. Looking at Shi Ping's natural breasts, his penis became incredibly hard. "So beautiful... Ping Ping." Shi Cheng's hands eagerly touched those soft, swollen breasts, as if confirming their shape with his hands, his entire knuckle sinking into the cotton-like softness. "Ah... I hate it..." "So comfortable." Under Shi Cheng's gentle kneading, Shi Ping's small, cherry-shaped nipples changed shape alluringly, becoming even firmer and several times larger than ever before. "Such a wonderful shape..." Shi Cheng's large hands tightly covered her two round breasts, his fingers playfully flicking the firm nipples up and down. With Shi Cheng's teasing, Shi Ping's breasts became increasingly lustrous, and her skin became smoother. "Ah... like this..." Shi Cheng's fingers lightly pinched Shi Ping's nipples, constantly rotating them. Shi Ping's legs involuntarily spread wider and wider, her moist vulva already red and swollen, its swollen shape making one want to suckle it hard. Shi Ping slightly opened her captivating, bright eyes, her legs spread wide, her beautiful vulva even more swollen and obviously dripping with lewd fluid in front of Shi Cheng. "Eh... Sister... my little hole..." Shi Cheng suddenly noticed something and his eyes fell on the swollen little hole. "What... what happened?" Shi Ping suddenly stopped and looked at her younger brother. "Your little hole is so red. Are you okay?" Shi Cheng looked at Shi Ping's vulva with heartache and looked up at her. "I... I've been thinking about you these past two days... I've been masturbating and masturbating... I..." Shi Ping made up a reason so as not to worry her younger brother. "Wow... why are you like this? I'm sorry, I've made you lonely these past two days." Shi Cheng felt relieved and gently covered Shi Ping's soft vulva with his hand, gently massaging it in a circular motion. "My body... is trembling... floating... so comfortable." Shi Ping's vulva was being massaged by her beloved man, and she began to breathe rapidly. The rise and fall of her breasts felt like it could easily make any man's saliva flow. "Shi Ping... is it comfortable...? I want to make you even more comfortable..." "Shi Ping's little hole seems like it would melt with the slightest touch of a finger. Shi Cheng gently caressed her swollen little hole while sucking on her swollen nipples. 'Ah...ah...it feels so good, sucking like this feels so good...' Following Shi Cheng's caresses, Shi Ping's body became more and more unconscious, making cute reactions, which excited Shi Cheng more and more. 'I want you...for so long...' Shi Cheng smelled the sweet fragrance emanating from between his sister's legs, and his eyes couldn't help but look at Shi Ping's tight hole. Shi Cheng's already bent and erect penis felt even more painful, and slippery pre-ejaculate flowed out from the tip of his hard penis. 'Shi Ping...I...I already...I want...I want to become one with you.' Shi Cheng grasped his penis, gently moved his body in front of Shi Ping's hole, and forcefully spread Shi Ping's slender legs. 'Mmm...'" "Mmm," Shi Ping opened her eyes, looking tenderly at her younger brother, and couldn't help but nod.
"Shi... Shi Ping," Shi Cheng gripped his penis, rubbing it up and down against Shi Ping's vulva, the head of his penis pressing hard against her opening. "I've been waiting for this day... I really..." Shi Cheng was so excited he could barely speak, letting his penis slowly sink deeper into Shi Ping's vagina, the back-and-forth motion making Shi Ping impatient. "Hurry up, husband, don't play with me anymore, put it in, husband, I want you..." Shi Ping kept saying "husband, husband," making Shi Cheng take a deep breath. "Little... Little Ping!!" With a gentle thrust of Shi Cheng's waist, he smoothly inserted his penis into Shi Ping's vagina. "Ah ... "Ah ... With a "pop," Shi Cheng quickly pulled his penis out. Suddenly, like a volcanic eruption, a long stream of semen spurted from the urethral opening, drawing a large line on Shi Ping's face. It was unstoppable, shooting out dozens of streams in succession, like taking a semen bath, staining Shi Ping completely white from head to toe. Several streams even went directly into Shi Ping's mouth. "Ugh...what...what happened?" Shi Cheng looked at his penis, which had swollen from its original ten centimeters to over twenty centimeters, and the entire penis had turned red. The pain from that morning also swept over him. "It...it hurts so much...sister...sister." Shi Cheng looked at his sister on the bed, only to see that his sister had already fainted from the orgasm. "No way... what's going on... ahh... it hurts so much!" Shi Cheng pinched his penis hard, the pain making his consciousness increasingly blurred. He collapsed next to Shi Ping and fainted as well. "..." "Huff... huff..." Outside Shi Ping's house, a red car had been swaying slightly from the beginning. "Huff... Shi Ping... Shi Ping baby... ahh..." With a splat, several blobs of thick white liquid suddenly hit the car's interior window. The man inside was completely exhausted, lying on the seat. "So good... so good... Shi Ping... I will never let him... possess you... huff." The man chuckled softly, his eyes fixed on the window of Shi Ping's room, a sinister smile on his lips.
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Chapter Nineteen of the Lustful Breast Switch

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