My Beloved Sisters
The pristine, lovely pink flesh, not yet fully matured, parted. Her opening gaped, greedily swallowing the equally pink shaft deep inside. Though it had only been a few short days, her body easily welcomed the massive member, as if proving how frequently it had been sliding in and out of her. The familiar sensation of him carving through her inner flesh sent a jolt of pleasure, like static electricity, straight up Tang Ga-in’s spine. Her hips nearly buckled, but she barely managed to hold back, calmly looking down at Tang Hwi.
"Ah, ugh...! W-what is this...!"
His voice was that of an adult man, but his childish tone created a bizarre contradiction. The dissonance sparked a thrilling sense of depravity within her. It felt as though she were ravishing someone innocent, all while violating the taboo of her own flesh and blood. Finding herself unexpectedly in the dominant position in bed, a strange streak of sadism awakened within Tang Ga-in, and a smirk naturally spread across her lips. She began to roll her hips, squeezing and releasing him in the exact rhythm she knew Tang Hwi loved.
Squish. Squish. Squish. Her wet folds continuously drooled as they swallowed his shaft. When he pushed inside, she squeezed gently, wrapping him in a warm embrace; but when he pulled out, her vaginal walls clamped down tight as if begging him not to leave. It was an incredibly greedy display, as if she were tempting his cock to stay merged with her forever. Every time the thick, long shaft impaled her, Ga-in felt the strength draining from her waist. Before her body could collapse forward, she reached out and pressed her hands against Tang Hwi's abdomen to support herself.
'Brother's abs... unlike his pathetic martial arts, they're so hard.' Her face flushed anew at the masculine muscle, a physical trait entirely absent in women. Come to think of it, even in her memories of their naked trysts, Tang Hwi had always possessed an exceptionally well-built physique.
"Haa... Haa... Hehe. Brother, how is your sister's treatment? Does it feel good?"
"I-It feels so good...! My hips are moving on their own...!"
"Hehe. ♡ I'll do a much better job than Sister."
His face flushed as if unfamiliar with such intense pleasure, trying his best to endure the ecstasy. He looked the very picture of pure innocence. This sight fueled Tang Ga-in's sense of taboo and conquest, making her smile grow even wider.
She slid her hands up from his abs to his chest. Placing her fingers around her brother's nipples, she gently pinched them. She kept up the pressure on his chest while continuing to grind her hips. It was adorable how his eyes twitched every time his soft glans bumped against her cervix.
'This regressed version of Brother is so cute, unlike his usual pathetic self. ♡' He was so darling she wanted to bite him. It wasn't a fitting thought for a fully grown man, but Tang Ga-in truly felt that way. While the monstrous cock stretching her walls to their absolute limit was a beast in its own right, his reactions were those of an innocent child, bathing the entire act in a delicious, contradictory sense of depravity. Every time the shaft wrapped in her flesh throbbed like a writhing dragon, a wave of pure bliss washed over her.
"Brother, ♡ I'll cure you much faster than Sister, so just keep your cock nice and hard for me. Okay?"
"Yeah! I-I understand!"
"Good boy. So good... *Mwah.*"
If only he were this obedient normally, she thought, leaning down to plant a sweet kiss on Tang Hwi's forehead. The moment her lips touched his skin, Tang Hwi went rigid. He stiffened completely, his shaft hardening to its absolute limit before throbbing violently and unleashing a torrential flood of semen.
Spurt. Splurt. Shooot.
"Ahhn... ♡"
The hot semen flooded her precious womb. A profound sense of feminine confidence swelled within her. Part of it was due to how thoroughly her tight walls had milked him, but how would Tang Hwi react now that he had lost control and blown his load the instant she kissed him? Was this a good omen, or a bad one?
'My head is spinning. But... this ecstasy feels so good.' Tang Hwi had erupted spectacularly the moment her lips touched him, but the aftershocks hitting her were just as intense. *Thump! Thump!* Her heart was hammering like crazy. It beat so violently that she worried Tang Hwi might hear it. Would he realize the depth of the emotions she was desperately trying to suppress? Would everything she had denied up until now go to waste? Even as these anxieties lingered...
"...Ngh."
The moment she pulled her lips away from his forehead and looked at his face, she gasped.
"Ah."
She couldn't help but let out a soft exclamation. Tang Hwi looked incredibly bashful, like a young maiden who had just received a confession from the boy she loved. From his face, flushed as red as a ripe autumn maple leaf, to his trembling, restless eyes that tried to look away but kept darting back to her lips—it was painfully obvious. Just as she had fallen for him, Tang Hwi was clearly struggling to hide his own affection for her. Seeing this filled her with an overwhelming wave of emotion. *Thump. Thump.* It wasn't just lust driven by his Heart Demon; he genuinely, truly found her attractive as a woman, and that realization brought her boundless joy.
'Ah. I lost. ♡ I completely lost to my pathetic brother. ♡' She really did love him. Looking at his face, she could no longer deny her feelings. She wanted this taboo relationship. She loved this monstrous cock squelching inside her, and she loved Tang Hwi for getting so hard for her and making a face like that.
'I absolutely refuse to lose to Sister...' She didn't want Tang Ga-hui to steal Tang Hwi away. If he turned his back on her and focused entirely on Tang Ga-hui, the shock would be unbearable. She might actually fall into Qi Deviation herself and end up needing treatment. That was why she had to work hard now. If she made this childish Tang Hwi fall head over heels for her, he would stay obsessed with her even after his memories returned. Though he had already confessed to her once, hadn't she rejected him? For all she knew, his heart might have already drifted toward Tang Ga-hui. At the very least, she had to level the playing field. Even with the scar on her face, Tang Ga-hui possessed an incredibly voluptuous body, so she couldn't afford to let her guard down. Ga-hui had massive breasts and a constitution that prevented her from gaining weight due to her poison arts. Unlike Ga-in, who had to strictly manage her diet to practice throwing weapon arts, Ga-hui was a genius in poison arts, meaning any weight she gained went straight to her chest. Their mother, Tang Suryeon, was also a genius in poison arts, which was probably why every pound she gained went directly to her breasts. Why was Ga-in the only one cursed with such a childish figure?
'I must have inherited more of Father's genes. ...How unfair.' It was a terrible thing to admit, but if Tang Ga-hui hadn't suffered that facial scarring, Ga-in wouldn't have stood a chance. She felt a deep pang of self-loathing for feeling relieved by her sister's misfortune, but her love for Tang Hwi was far stronger, and the relief won out. Without another moment's hesitation, Tang Ga-in resolved to seduce Tang Hwi completely.
Spurt... drip... squirt...
After milking every last drop of semen remaining in his urethra with her tight folds, Tang Ga-in looked down at Tang Hwi with an expression of pure, overflowing adoration. As a reward to the admirable cock that remained rock-hard even after ejaculating, she began to rotate her hips, grinding against him. Her cervix clung to his massive glans, sucking on it in a series of lewd, wet kisses.
"Ah. My pathetic brother, ♡ you finally finished spilling it all."
"I-Is it over? Now... ah!"
"No, silly. Look how your cock is still standing so proud and erect. ...Ngh."
Schlick. As Tang Ga-in lifted her body slightly, the thick shaft of his penis slid out, exposing itself. With only the glans still hooked at her entrance, the heavily veined, pulsing shaft throbbed vigorously, as if declaring its desire to ejaculate even more. Looking at the thick, monstrous thing glistening with her juices, and then at Ga-in's lewd opening that had swallowed it so effortlessly, Tang Hwi swallowed hard.
'Hehe. ♡ He can't take his eyes off it.' No matter how innocent he was acting, she knew his body would react to physical stimulation. Since his mental age had regressed to that of a child, he would have absolutely no resistance to such raw, carnal desire. Children were as pure and clean as a blank sheet of paper, after all. On that blank canvas that Tang Hwi had become, she would paint him with her own colors. Just as she and the original Tang Hwi had adjusted to each other's bodies, this time she would dye him in her own shade, molding him to her exact tastes.
"Let's continue the treatment. If you feel like peeing, don't hold it back—just let it all spurt out inside me."
"B-But that's embarrassing!"
"Shh. Just leave it to Big Sister."
"I told you, you're not my sister, ah...!"
Squelch. Squelch. Squelch. Squelch. His words were cut short by a groan as Tang Ga-in resumed her vigorous bouncing. Having already ejaculated once, the shaft slid in and out with ease. Every time she came down,