She climbed onto his lap the second he walked through the door, her short skirt already hiked up so her bare pussy pressed right against his jeans. "No more pulling out," she said, grinding down hard. "We're doing this. We're starting our family tonight."
Her brother grabbed her ass with both hands and squeezed. "You sure, sis? Once I start pumping loads in that cunt, I'm not stopping till you're knocked up."
"Fuck yes," she moaned, yanking his zipper down. His cock sprang out thick and already leaking. She wrapped her fingers around it and stroked fast. "I want your baby. I want you breeding me every night."
He flipped her onto the couch and shoved her thighs apart. No teasing, no slow build. He lined up and slammed his cock straight into her soaked pussy in one thrust. She cried out, legs locking around his waist as he started pounding her deep and rough.
"That's it, take every inch," he growled, hips snapping hard. "This pussy's mine now. Gonna fill it up until it takes."
She clawed his back, meeting every thrust.
"Deeper. Breed me, bro. Shoot that hot cum right in my womb."
He fucked her like he meant it, balls slapping her ass with every stroke. Sweat slicked their skin. Her tits bounced under her thin top until he ripped it open and sucked a nipple hard. She came first, pussy clenching tight around him, but he didn't slow down. He kept driving into her until his cock swelled and he grunted, unloading thick ropes of cum straight against her cervix.
He stayed buried, grinding to push it deeper. "Not pulling out tonight. Or tomorrow. Or the next day."
They didn't leave the house for three days. He took her on the kitchen table after breakfast, bending her over so he could watch his cum drip out of her before he pushed back in and added another load. In the shower he lifted her against the wall, water running over them while he fucked her standing up, her legs wrapped tight as he growled about putting a baby in her belly. At night she rode him slow and filthy in their bed, rolling her hips and telling him exactly how she wanted his seed to take root.
By the end of the week her period was late. She climbed on top of him again, already knowing, and sank down on his hard cock with a satisfied moan.
"Feel that?" she whispered, grinding down until he was balls-deep. "Your cum did it. I'm pregnant with your baby."
He flipped her onto her back and fucked her harder than ever, one hand on her flat stomach like he could already feel the change. "Then we keep going. Gonna keep breeding this pussy every day while it grows."
She came screaming his name, and he followed right after, pumping another thick load into her already claimed cunt. They kept at it for months, raw and relentless, every position, every room, until her belly started to swell. Each time he finished inside her he stayed there, holding her close, both of them knowing exactly what they'd started together.
