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Jinwoo woke early, his body feeling both fresh and troubled. The night before had been a whirlwind of guilt and release. He had masturbated fiercely with his sister Sohee's panties, a release that now left him trembling with guilt but also with a sense of relief. He hadn't crossed the line with Minji, his ten-year-old sister. He genuinely cherished her; she was the innocent, loving core of their family. If he had to save one person from a fire, it would be her, without a second thought. This deep affection was the only thing that had allowed him to flee her room the night before, an act of sheer will against his monstrous urges.
After an intense shower, jinwoo made a silent vow never to lust after Minji again. He remembered rushing out of her room, leaving her uncovered. Now, he walked through the dim living room to her bedroom. He found her curled up and fast asleep, a peaceful, innocent sight. The girl who had stirred such chaotic desires in him was gone; only his lovely younger sister remained. A wave of relief washed over him. He gently pulled the blanket over her and watched her for a moment before leaving, his vow feeling stronger than ever.
As he walked through the living room, a light from his mother's bedroom caught his eye. A faint, low moan was coming from inside. A cold unease settled in his stomach. He approached the slightly ajar door and peeked through the crack. The room was brightly lit, and his mother lay in the same position she had been in when he first saw her with Minji. An eye mask was over her eyes, but her mouth was slightly open, a look of pleasure on her face. Her lilac silk gown was pushed aside, and her hand was inside her panties, moving with a rhythm of its own. In her other hand, he saw them: Sohee's black panties, the same ones he had just used.
jinwoo heart began to race. A confusing mix of arousal and shock gripped him. Why was his mother doing this? He couldn't process it, but he couldn't deny the overwhelming desire that consumed him. He pulled out his engorged cock, grasping it with both hands. As he watched her, stroking himself furiously, he focused on her body: her voluptuous breasts, her elegant behind, the way her body writhed with each movement. As he neared his climax, a dangerous idea took hold: what if he came on her? The thought of Minji, asleep in the next room, flashed in his mind. The vow he had just made was crumbling. But he knew, even as he made the promise, that he might one day commit the unthinkable.
He adjusted his clothes and, driven by an impulse he couldn't control, returned to Minji's room. She was still sleeping soundly. He lowered his pants and brought his pulsing erection close to her face. He recalled the sight of her suckling on his mother's breast, and now her innocent lips were just inches away. His erection brushed against her lips, and a jolt of pleasure shot through him. In a burst of desperate release, he came, his semen splattering across Minji's face—her eyes, cheeks, nose, and mouth. He breathed heavily, watching his seed glistening on her skin. He placed his finger on her lips, gathering the semen and spreading it in a slow, circular motion, a ritualistic act of accepting his own depraved guilt.
Recalling the events of the night, a mix of shame and forbidden excitement ran through jinwoo. He went downstairs, not to the second-floor bathroom he normally used, but to the one on the first floor. He wanted to see if there were any traces of the night before. He opened the lid of the washing machine. The laundry was already turning. The evidence of his guilt was being cleansed by his mother. The thought that she was the one handling the aftermath, her body still humming with the same excitement he had felt, sent a thrill through him.
He quickly showered and went to the kitchen, where his mother and Minji were making breakfast. Seeing his mother, he couldn't help but picture her writhing on the bed, blindfolded and holding his sister's semen-stained panties.
"jinwoo, you're up early today?" his mother greeted him with a warm smile.
Her voice and demeanor seemed completely normal, as if nothing had happened. But jinwoo knew better. He was now certain she had been awake when he touched her nipple. The intensity of his touch would have woken anyone. Her minimal twitch was a masterful act of pretense. A strange, thrilling thought took hold of him: if she knew that he knew, how would her smiling face change?
"Yeah, I really relaxed and had a good sleep last night," he said, the words a deliberate hint. He wanted to see her flustered reaction.
"Did you exercise or something before bed?" she asked calmly.
He was puzzled. Was she oblivious, or just a masterful actress? Her casual response pushed him to go further. "No, not exercise... But you also slept deeply last night after doing the same, right?"
"Ah...ah?" A flash of panic crossed her face, a subtle, fleeting expression that jinwoo instantly recognized. It was a secret sensation, a shared understanding between them.
"I moved Minji after that, right? Slept deeply because of that?" he pressed.
"Ah, yes... Maybe I really did sleep well last night thanks to you, jinwoo." She seemed slightly uneasy, but she didn't connect his words to her secret.
"Today, I'll make zucchini stew for you! But maybe it's not your favorite? Still, you should eat a variety of foods! Hehe," Minji chirped, her face bright and cheerful. The same face that had been covered in his semen just hours before. The same vibrant, innocent lips that were now chattering away.
"Yeah, anything Minji makes is always delicious," jinwoo said to her, a promise to himself. He looked from his mother to his sister, a familiar, knowing gaze in his eyes.
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