The basement smelled like old concrete and sweat. Mark slammed the door behind him and locked it, the click echoing like a gunshot. His sister Emily, twenty-two and already half-drunk from the party upstairs, spun around with wide eyes.
“What the fuck, Mark? Let me out.”
He held up his phone. The video played loud enough for both of them to hear her slurred moans from last month’s hookup with their cousin. “You don’t want Dad seeing this. Or Mom. Or the rest of the family group chat.”
Emily’s face went white. “You wouldn’t.”
“On your knees.”
She stared at him, breathing hard, tits rising and falling under the thin tank top. Then she dropped. Mark unzipped and pulled his cock out, already hard and thick. “Suck it like you mean it or the video goes live.”
Her mouth opened and she took him in. No teasing, just wet heat and reluctant tongue. He grabbed her hair and fucked her face, pushing until her nose hit his stomach and she gagged. Spit ran down her chin onto her shirt.
“Deeper, slut. You’re family now. You do what I say.”
He pulled out and hauled her up, bending her over the old couch. Her shorts came down in one yank. She was already wet despite the glare she threw over her shoulder. Mark lined up and shoved inside her pussy in one rough thrust.
“Fuck!” Emily cried out.
He pounded her hard, the slap of skin loud in the small room. One hand reached around to rub her clit while the other pinned her wrists. “You’re gonna come on your brother’s cock and you’re gonna like it.”
Her body betrayed her. She clenched around him, hips pushing back even as she muttered, “I hate you.” The orgasm hit her anyway, legs shaking, a broken moan escaping.
Mark didn’t stop. He flipped her onto her back, yanked the tank top up, and sucked hard on her nipples while he kept driving into her. “Tell me you want it.”
“I… fuck… I want it,” she gasped.
He pulled out, flipped her again, and pressed the head of his cock against her asshole. “Lube’s in the drawer. You get three fingers worth.”
She reached back with shaking hands, working her own ass open while he watched and stroked himself. When she was slick he sank in slow, then faster, owning every inch. Emily’s moans turned into desperate whimpers as he railed her ass, one hand fisting her hair, the other slapping her clit until she came again, tighter and louder than before.
He finished deep inside her, hot pulses filling her ass while she trembled under him.
Afterward he pulled out, wiped his cock on her thigh, and tossed her the phone.
“Delete it yourself. But next time you’re gonna beg for it.”
Emily sat up slowly, cum leaking down her leg, breathing ragged. She looked at him with something between hate and hunger.
“Next time,” she said, voice raw, “don’t lock the door. I might want the whole house to hear.”
Mark grinned. “Good girl.”
