Moans Leaking from Her Sister's Room
“Hey… are you… still good on stamina?”
Her voice was barely more than a whisper. Yet that single line held everything she felt and everything she wanted in that moment.
Taeseok read the intent at once from her eyes and the tremor in her breath. Still, he pretended not to understand.
“Stamina? I’ve got plenty left. Why?”
Eunsu bit her lip. Her eyes were already wet with the shame of wanting it first, but her voice stayed honest.
“It’s just… I… want to get a little prettier.”
“That’s why you work out so hard, right? You’re already plenty pretty…”
He tilted his head, the picture of innocent curiosity.
“Hey!!! That’s not what I meant!”
Her voice jumped, then she clapped a hand over her own mouth as if the volume had startled her.
“Then what did you mean?”
“You bastard… you already know… is teasing me that fun?”
“Yeah. Way too much…”
“God, you…”
She glared at him, then dropped her gaze again.
“Can’t you just… take care of it without making me say it?”
“I’m a little slow upstairs…”
Eunsu shook her head in disbelief. Open her mouth or keep it shut—dozens of hesitations raced through her mind. But the heat already flooding her body was too strong to ignore. At last she spoke in the tiniest voice.
“Do it. Hold me…”
“You really want it?”
He asked again, making her confirm it.
“Yeah…”
“Eunjeong might catch us… still okay?”
“I… don’t want to get caught, but… the odds are lower than when we did it on the sofa this morning, right?”
Watching her shy face, Taeseok smiled and drew the blanket down. His cock rose into view, thick and heavy even though it wasn’t fully hard yet. The sheer size and girth were overwhelming.
“Hah… seriously… you’re insane.”
“Isn’t this what you wanted?”
“Yeah… it is.”
“Then first… get my thing standing for me.”
It was wrapped like a request, but the command was unmistakable. Eunsu wrapped her hand around him and began to stroke, slow and careful.
“That enough? Shouldn’t you figure it out yourself, unnie?”
She shot him a sideways look, then resigned herself and bent lower. Kneeling between his thighs, she cradled his half-hard cock in both hands.
The hot, heavy weight filled her palms and her breath roughened at once. She had sworn she would never do this—touch her sister’s man’s cock—yet the forbidden contact only wound her tighter. Her lashes lowered, casting thin crescent shadows on her cheeks. Slowly she parted her lips. A pink tongue tip slipped out and flicked the head.
A soft, wet lap…
She curled her whole tongue around him and dragged it upward, then circled the flared ridge once with the tip.
“Mmm…”
Warm, silky sensation rolled through him. Taeseok let a quiet groan slip between his lips, eyes half-lidded in a mix of ease and tension. Eunsu opened wider and took him deep. The thick, burning length scraped her palate and filled her mouth completely; her cheeks bulged outward as if she held a small ball inside. She pressed her tongue to the underside and began to suck in slow, steady pulls. Wet, rhythmic sounds filled the room—slurp, smack—threads of saliva stretching and snapping. The heat flooding her mouth and the way he hardened against her tongue made her thighs squeeze together of their own accord. Through her panties she felt the soft pressure of her own entrance, a maddening itch.
“Hahmm… mmmph… suck…”
Target: Kim Eunsu
Emotion Value:41
She grew bolder. At first she had managed the depth carefully; now she picked up speed. Each forward thrust of her head swallowed him to the root and each retreat left him glistening. Spit ran down the shaft and caught the light. She cracked her eyes open and looked up through her lashes until her gaze locked with his. The sight of her with her mouth stuffed full of him was pure provocation. Taeseok smoothed the sweat-damp hair from her forehead.
“It’s hard enough now.”
Permission to stop. But Eunsu wanted more. The feeling of his flesh filling her mouth was too good to give up.
Target: Kim Eunsu
Emotion Value:46
“Just a little longer… let me suck a little more. It’s weird… just doing this feels too good.”
The words broke around wet, greedy sounds. She never released him. Her hollowed cheeks worked with every bob of her head; saliva dripped from her chin onto her hot pants. Taeseok watched from above.
“All right. When you’re satisfied, tell me. Then I’ll put it in.”
Instead of answering she took him deeper—into her throat. The gag reflex hit, but the pressure only flipped into pleasure.
Weird… this is really weird… just sucking and I’m…
“Hnnngh…♡”
A low, drawn-out moan spilled from her throat. Her body shuddered hard.
Target: Kim Eunsu
Emotion Value:50
Orgasm. The situation was absurd, yet the pleasure was real.
Fuck… I came just from sucking cock…
Morning.
The moment Eunjeong opened her eyes she knew the space beside her was empty. The warmth that had pressed against her all night had already gone cold. She reached for the pillow he had used; a faint trace of him still clung to it—sweat, heat, the memory of last night. But he himself was gone.
Taeseok… did he go upstairs?
She started to sit up and found his clothes discarded beside the bed—T-shirt and pants left exactly where they had fallen.
Clothes are still here… so he went naked? No way…
She walked out to the kitchen. Empty. Only the low hum of the refrigerator. She rinsed her face in the bathroom, stepped back into the hall—and froze.
From the room where Eunsu was staying, a tiny, honeyed moan slipped through the door.
“…Hahng…♡”
Soft. Sticky. The sound of someone trying and failing to keep pleasure locked in her throat. Eunjeong’s body locked. She held her breath and listened. Another low, wet moan leaked through the crack.
“Mmm… Taeseok… it feels… so good…”
The words made her tremble. Strength drained from her limbs even as her thighs tensed. Her body answered before her mind could catch up. Almost without deciding, her feet carried her forward until she stood outside Eunsu’s door.
Slap… slap… slap…
Flesh met flesh in a steady, rhythmic beat. Eunsu’s filthy moans grew clearer.
“Ah~♡ Harder… just like that…”
A strange pull tightened low in Eunjeong’s belly, heat rising from the inside out.
“…Why…”
She clamped a hand over her mouth, eyes wide.
Taeseok and… Eunsu?
She could not bring herself to open the door. She simply stood there, listening. The man who had held her so fiercely all night was now holding her own little sister. The knowledge sliced through her chest—thin, sharp pain traveling from left to right. Jealousy surged. Beneath it, a deeper hollow of loss opened, as if the floor had dropped away. Strangely, her anger at Taeseok himself was not the strongest feeling. It was there, but it shrank beside the betrayal aimed at Eunsu and the bleak question of why it had to be her sister.
After everything I did… after he held me all night… he’s… with Eunsu…
Her fingers tightened on the doorknob. She wanted to fling the door open and tear them apart. In the end she never turned it. She stayed where she was, listening to her sister’s lewd moans and Taeseok’s ragged breathing. Every sound heated her body even as her heart grew colder.
At last she whispered, almost inaudibly,
“…I guess it can’t be helped.”
She stood a moment longer, then quietly moved toward the kitchen. The hurt of “why Eunsu” tangled with the self-reproach of “was I not enough” until her throat closed. Yet resignation arrived first: if he wanted Eunsu, there was nothing she could do. He was already her entire world, and she had become only a part of his.
I… can’t monopolize Taeseok.
The instant she admitted it, pain and a strange relief arrived together.
As long as he doesn’t throw me away.
If that was true, only one path remained. She had to do better. Become prettier, more obedient, more eager to take every desire he offered. She had to give him deeper, stronger pleasure than anyone else could. She looked down at her own body. Frequent nights with him had already rewritten her; the old shape was gone, replaced by something lush and beautiful.
“…Taeseok, I’ll… try harder. However you want me… I’ll change as much as you need.”
Tears gathered, but the resolve inside them was firmer and more tender than before—a quiet, desperate vow to pour everything she had into him.
After giving Eunsu several more climaxes, Taeseok quietly opened the door and slipped out. The clink of dishes already drifted from the kitchen; Eunjeong was awake. He could not stay in Eunsu’s room forever.
…Even if she finds out about Eunsu, so what?
He thought it without flinching and stepped into the living room. He was growing shameless with her—his power, his choices, his lust. Hiding them no longer felt necessary. He crossed the kitchen, entered Eunjeong’s room, and pulled on the clothes he had left there. After straightening them, he walked back out with an unreadable face and headed for the kitchen.
Eunjeong was still preparing breakfast as if nothing had happened. The moment she turned and saw him she smiled softly.
“Taeseok, you’re up?”
Her voice was as warm and gentle as always.