From that night on, Koo and Taehyung couldn’t stop.

It started with him sneaking into the living room after Mimi had gone to bed, pulling Koo onto his lap and stuffing his cock into her while she tried to keep quiet. Her muffled moans would echo against his shoulder as she bounced on him, his hands bruising her waist.

Then it was the mornings—Koo pretending she was “waiting for Mimi” but slipping into his study instead. Taehyung would have her bent over his desk, his cock buried in her dripping pussy while important files scattered across the floor.

“Fuck, Koo—” he’d groan, slapping her ass while she clawed at the wood.

“Don’t stop, Tae—don’t you dare stop,” she’d sob, her pussy creaming all over him.

Even the shower wasn’t safe. She’d sneak in while he was rinsing off, pressing her tits against his back, whispering, “Let me wash you, Daddy.” Before long, she was on her knees in the steam, gagging on his cock until he spilled down her throat.

Taehyung had stopped seeing Hana completely. He didn’t even think about her anymore. All he could think about was Koo—her pink lips, her bouncing tits, her needy pussy that clung to him like it was made only for him.

He was addicted.

And Koo? She was just as bad. She dressed sluttier, shorter skirts, tighter tops, sometimes “forgetting” to wear panties just so he’d see when she bent down. She texted him late at night, sending him pictures of her spread pussy with captions like: “Miss your cock, Daddy. Come fill me again.”

Whenever Mimi wasn’t home, the house turned into their playground. The kitchen counter. The balcony. Even Mimi’s bed once—Koo daring him with a wicked smile, moaning his name into her best friend’s pillow as Taehyung fucked her senseless.

Mimi had no idea. She thought Koo was just her wild, slutty best friend hanging around like always. She had no clue that every time Koo disappeared to the bathroom, she came back with her pussy dripping full of her father’s cum.

Late one night, Koo lay naked in Taehyung’s arms, her body still trembling from another round. His fingers traced lazy circles on her swollen clit, making her whimper.

“You drive me insane,” he muttered against her lips. “I can’t stop wanting you.”

“Good,” Koo smirked, kissing him back and rolling her hips to grind against his cock again. “Don’t stop. I want you obsessed. I want to be the only one you think about.”

Taehyung groaned, already hard again. “You already are.”

And with that, he rolled her beneath him and slid back inside, both of them moaning, desperate, addicted, and unable to stop.