The house was quiet except for the hum of the fridge and the low throb of music from upstairs. Mark had just turned twenty-two, home from college for the summer, and his stepsister Jenna, nineteen and freshly legal, was the only other person around. Their parents were gone for the weekend. He found her in the kitchen wearing nothing but an old t-shirt that barely covered her ass.
“Fuck, Jenna, you trying to kill me with that outfit?” he said, leaning against the counter, eyes locked on the way the hem rode up when she reached for a glass.
She turned, smirking, nipples already hard against the thin cotton. “Maybe. You’ve been staring at me since you got back. Thought you might finally do something about it.”
Mark didn’t waste time. He crossed the room, grabbed her hips, and spun her to face the counter. “You want it raw like the stories you read? Fine.” He yanked the shirt up, exposing her bare pussy, already slick. Two fingers slid straight in, pumping hard. Jenna moaned and pushed back, grinding on his hand.
“Deeper, big brother,” she hissed. “I’ve been wet thinking about your cock since you left for school.”
He freed his dick, thick and throbbing, and slammed it into her without preamble. Jenna cried out, gripping the edge of the counter as he fucked her in hard, filthy strokes. The wet slap of skin filled the kitchen. Mark reached around, rubbing her clit in rough circles while he pounded her.
“Tell me how bad you want your brother’s cum,” he growled.
“Want it all,” she panted. “Fill my cunt. Been saving it for me, haven’t you?”
He pulled out, spun her around, and lifted her onto the counter. Legs spread wide, he drove back in, watching his shaft disappear into her tight, dripping hole. Jenna’s tits bounced with every thrust. She reached down, spreading her lips so he could see every inch stretching her open.
They moved to the couch next. Mark bent her over the arm, ass up, and took her from behind again, deeper this time, balls slapping against her.
Jenna fingered her own clit, coming hard around him, juices running down her thighs. He didn’t stop, just kept railing her through the orgasm until she was shaking.
“On your knees,” he ordered. She dropped, mouth open, and he fed her his cock, still coated in her cream. Jenna sucked greedily, taking him to the back of her throat while he held her head and fucked her face.
When he was close, he pulled her up, bent her over the coffee table, and slammed back into her pussy. “Gonna breed this slutty sister cunt,” he grunted, thrusting faster. Jenna pushed back to meet every stroke, begging for it.
Mark came with a roar, pumping thick ropes deep inside her. He stayed buried, grinding as the last pulses emptied into her. Jenna clenched around him, milking every drop, then reached back to feel the mess leaking out around his cock.
They didn’t stop there. Upstairs in his room, she rode him reverse, ass bouncing while he spread her cheeks and watched his cum-slick dick disappear again and again. Later, in the shower, he took her against the tiles, water running over their bodies as he fucked another load into her.
By morning they were tangled in his sheets, her pussy still full, both of them knowing the weekend was only the start of their new filthy routine.
