Gael returns home with a dangerous mission: to deliver his sister Eunji to his friend Minho. The sexual and emotional tension escalates in a forbidden encounter that will change everything.
The air in the valley of the White Dragon Mountains smelled of damp earth and freshly cut grass, that sweet, earthy scent found only in the most remote corners of the Murim. Gael walked with slow steps between the rice fields, his straw sandals crunching slightly under the weight of his body, still adjusting to this new life that had been forced upon him. His family's home, a modest structure of mud walls and a thatched roof, rose before him, illuminated by the last rays of the setting sun. But it wasn't nostalgia for home that tightened his chest, but the insistent whisper in his mind, that voice only he could hear.
—Mission assigned: Deliver your sister to your friend. Incestuous contact is prohibited. Comply and you will be rewarded with pleasure beyond your wildest dreams—
Gael swallowed, feeling his groin tense instantly. The system wasn't lying; every time he obeyed, a wave of ecstasy coursed through his body, as if thousands of invisible fingers were caressing every nerve ending in his skin. But this time it was different. This time it was her.
Inside the house, the sound of wooden bowls clinking together betrayed his sister's presence. Eunji, her black pigtails tied with red ribbons and her cotton hanbok clinging to her slim but womanly figure, was clearing away the remains of dinner. Her lips, full and naturally pink, pursed slightly at the sight of him entering, but her eyes—large, dark, and slightly almond-shaped—shone with curiosity.
"Are you back, oppa?" she asked, drying her hands on her apron. Her voice was soft, almost musical, with that hint of shyness she'd always had around him.
Gael felt sweat beading on his neck. The system gave him no choice.
"Yes," he replied, forcing a smile. "But I didn't come alone."
Behind him, a tall, silent shadow crossed the threshold. Minho, her friend from the cult, a man with sharp features, moon-pale skin, and eyes so dark they seemed to absorb the light. His long hair was tied back in a low ponytail, and his black robes, fitted to a body sculpted by years of training, left little to the imagination about the strength hidden beneath. Eunji took a step back, instinctively, not out of fear, but rather from that strange tension that always arose when Minho was around.
"What are you two doing here?" she asked, looking down at her hands, which were now twisting the hem of her hanbok.
Gael took a deep breath. It was now or never.
"Eunji…" he began, approaching her with calculated movements. "I need you to help me with something. Something… important."
She looked up, confused, but before she could respond, Gael was already leading her outside, toward the small wooden shed that served as a tool shed. Minho followed silently, his commanding presence filling the confined space. The interior smelled of old wood and linseed oil, and the only light came from the gaps between the planks, casting golden streaks across the dusty floor.
"What's this about, oppa?" Eunji crossed her arms over her chest, as if she sensed something wasn't right.
Gael didn't respond with words. Instead, with a swift movement, he took his sister by the waist and sat her on Minho's lap, who was leaning against a pile of rice sacks. Eunji let out a small yelp of surprise, her hands instinctively clutching Minho's shoulders to keep from falling. The warmth of the man beneath her was undeniable, even through the layers of fabric.
"What are you doing?!" he exclaimed, but his voice trembled, betraying something more than indignation.
"Calm down," Gael whispered, kneeling in front of them. His sweaty hands rested on his sister's knees. "Just... just trust me."
Minho said nothing. His eyes, however, never left Eunji's. There was something in his gaze, something that wasn't just lust, but a kind of suppressed hunger, as if he'd been waiting for this moment for years.
"Eunji," Gael murmured, his voice cracking slightly. "Kiss Minho."
The silence that followed was deafening. Eunji stared at him, her eyes wide, her lips parted in disbelief.
-That?
"Don't make me repeat myself," Gael said, feeling the system vibrate in his mind, approving. His own groin burned, his cock already rock hard against the cotton of his pants.
Eunji's breath hitched, her chest rising and falling rapidly. Slowly, as if moving underwater, she leaned her head toward Minho. Her lips brushed against his in a contact so light it almost wasn't a kiss, but the ghost of one. But Minho wasn't going to let her slip away that easily. With a firm hand, he cupped the back of Eunji's neck and pulled her close, sealing their mouths in a real, wet, and deep kiss.
A strangled moan escaped Eunji's throat, her fingers digging into Minho's shoulders as he explored her mouth with a practiced tongue, licking, tasting, claiming. Gael watched, mesmerized, feeling his own breathing quicken. The system sang in his head, a symphony of pleasure that made him tremble.
"Well..." Gael whispered, his voice hoarse. "That's how it's done."
Minho broke the kiss only to murmur against Eunji's lips:
—You're sweeter than I imagined.
She gasped, her cheeks burning, but she didn't look away. There was something about the way Minho looked at her, as if she were the only woman in the world, that made her feel… desired. Gael wasted no time. With trembling hands, he lifted the hem of his sister's hanbok, exposing her pale, smooth thighs. Eunji reflexively tried to close her legs, but Minho already had one hand on her waist, pinning her down.
"No," Gael whispered, shaking his head. "Let him see, nuna. Let him touch."
Eunji bit her lower lip, but didn't protest when Minho slid a hand up her thigh, moving up, up, until his fingers brushed the edge of her underwear. A small gasp escaped her lips when he pressed down, feeling the wet heat already emanating from between her legs.
"Gods," Minho murmured, his voice deep and raspy. "You're already wet."
Gael felt his own cock throb painfully. Unable to resist, he pulled down his pants, releasing his erect member, thick and reddish, dripping with pre-cum. He gripped himself, moving his hand slowly, each thrust synchronized with Minho's movements.
"Take off her thong," Gael ordered, his voice a growl.
Eunji gasped as Minho, in one swift motion, ripped the fabric from her hips, revealing her pussy, pink, shaved, and glistening with her arousal. Gael moaned, his hand moving faster on his cock as he watched Minho slide a finger between his sister's lips, opening her, exploring her.
"Ah!" Eunji arched her back, her small but firm breasts pressing against Minho's chest as he added a second finger, sinking them inside her with a slow, deliberate rhythm.
"So tight," Minho groaned, his breath hot against Eunji's neck. "So perfect."
Gael couldn't hold it in any longer. With a sharp movement, he grabbed his sister by the hips and lifted her up, only to bring her down again, this time directly onto Minho's crotch. The bulge in his pants was unmistakable: his cock, hard as steel, pressed against Eunji's wet pussy, separated only by the thin fabric of the man's underwear.
"G-Gael!" she protested, but her voice lacked conviction. Her hips treacherously moved in small circles, rubbing against him.
"Like this," Gael panted, masturbating furiously. "Like this, nuna. Ride it."
Minho didn't need any further encouragement. With a grunt, he undid the belt of his pants, freeing his cock. It was long, thick, veined, and the head was purple and glistening with pre-cum. Eunji stared at him, eyes wide, but before she could react, Gael lowered her again, this time causing Minho's glans to brush against her soaked lips.
"Wait, wait!" Eunji tried to resist, but the contact burned her. She was so wet that the mere touch made her shiver.
"There's no turning back," Gael whispered, his voice a sigh of submission. "You want it too, don't you?"
Eunji didn't respond. Instead, with a broken moan, she let herself fall, feeling Minho's cock sink into her, stretching her, filling her in a way she'd never experienced before. The initial pain mixed with a pleasure so intense her nails dug into Minho's shoulders.
"Ah! G-gods!" she cried, her body jerking as he thrust deep inside her.
Minho growled, his hands on Eunji's hips, guiding her in slow, deep strokes.
"So tight," he gasped. "So fucking good."
Gael watched, his hand moving steadily over his own cock, each thrust from Minho making his sister moan louder. Eunji was no longer trying to hide her pleasure; her lips were parted, her eyes glazed over, and every time Minho entered her, a lewd sound escaped her throat.
"More!" Eunji begged, surprised by her own voice. "Give me more!"
Minho didn't make her repeat it. With one swift movement, he laid her down on the rice sacks, his cock still inside her, and began pounding into her hard, each stroke making her buttocks bounce. Eunji screamed, her legs wrapped around Minho's waist, her nails scratching his back through his robes.
"I'm gonna...! I'm gonna cum!" Minho announced, his voice a roar.
"Inside!" Gael demanded, almost breathless. "Fill it!"
Minho obeyed. With one last deep thrust, he buried himself inside Eunji, his cock throbbing as he emptied his seed inside her. Eunji cried out, her body shaking in an orgasm that left her breathless, feeling Minho's heat fill her, marking her.
When Minho pulled out, his cum dripped between Eunji's thighs, mixing with her own fluids. But it didn't end there. With a mischievous smile, Eunji knelt in front of him and, without hesitation, wrapped her lips around Minho's still semi-hard cock, licking the remnants of her own orgasm off him.
Gael watched, his hand still on his cock, his breathing ragged. The system exploded in ecstasy inside his mind, but for the first time, between pleasure and submission, a doubt crept into his heart.
Eunji looked up at him as she sucked Minho, her eyes bright, her smile…happy.
And Gael knew, at that moment, that something inside him had broken forever.