The house was empty except for the creak of floorboards under heavy boots. Jake had come home early from the bar, buzzed on cheap whiskey and weeks of pent-up frustration. His stepsister Mia was in the kitchen, 22 and fresh out of college, wearing nothing but a thin tank top and panties while she rinsed dishes. She turned when she heard him, eyes widening at the look on his face.
"Jake, what the hell? You scared me."
He didn't answer with words. He crossed the room in three strides, grabbed her by the waist, and spun her around to bend her over the counter. Her ass pushed back against him as she struggled, but he was bigger, stronger, and already hard. "Shut up, Mia. You've been teasing me with this body for years. Family or not, you're getting fucked tonight."
She gasped as he yanked her panties down to her knees. "No, Jake, we can't—this is wrong. Stop!"
His hand clamped over her mouth. Two thick fingers shoved between her legs, finding her pussy already slick despite her protests. He worked them in rough circles, stretching her open. "Wet for your brother already? Dirty girl." He freed his cock, thick and veined, and drove it into her in one hard thrust. Mia cried out against his palm, body jerking forward as he bottomed out inside her tight heat.
He fucked her like he owned her, hips snapping hard enough to slap skin against skin. Each stroke forced a wet sound from her cunt, her walls clenching around him even as she tried to push back. "Take it," he growled, yanking her tank top up so her tits spilled free. He pinched a nipple hard, twisting until she moaned. "This pussy belongs to me now. No more pretending we're just family."
Mia’s struggles slowed, turning into reluctant rocking as pleasure built against her will. Jake pulled out, spun her to face him, and lifted her onto the counter. He spread her thighs wide and slammed back in, watching her face twist with forced ecstasy. "Look at you, creaming on your brother's dick. Say it."
"Fuck you," she spat, but her legs wrapped around his waist anyway.
He laughed low and dirty, pounding deeper, his balls slapping her ass. "Say you're my free-use slut. Say it or I stop." He slowed his thrusts to shallow grinds, teasing her clit with his thumb.
"I'm your slut," she whispered, voice breaking. "Fuck me harder."
Jake obliged, railing her until the counter shook. He pulled her down to the floor, flipped her onto all fours, and mounted her from behind like an animal. One hand fisted her hair, the other reached around to rub her swollen clit in fast circles. "Come on my cock, sis. Show me how much you love forced family dick."
Her orgasm hit like a punch, pussy spasming and squirting around him. Jake followed seconds later, burying himself to the hilt and flooding her with hot cum. He stayed inside her, grinding out every drop while she trembled beneath him.
Later, in her bed, he took her again—slow and deep this time, her legs over his shoulders, his mouth on her tits while he whispered every filthy thing he'd do to her from now on.
No more hiding. No more pretending. Just raw, repeated use whenever he wanted.
Mia came twice more before dawn, her body finally surrendering to what they'd both known was inevitable. By morning light, the "forced" part had shifted into something they both craved, the taboo line crossed and burned behind them.
