The house was quiet except for the wet sounds of skin slapping skin. Jake had his sister bent over the kitchen table, her shorts around her ankles and her bare ass pushed back against him. "Fuck, Mia, your pussy's sucking me in like it needs this load," he growled, gripping her hips hard enough to leave marks.
Mia moaned loud and filthy, pushing back to take every inch of her brother's thick cock. "Don't stop, Jake. Breed me. Fill your little sister's cunt until it takes. I want your baby in me." Her voice was raw, no hesitation, just pure need. Jake slammed harder, the table creaking under them. He reached around to rub her swollen clit in rough circles, feeling her walls flutter.
"Been wanting to knock you up since you turned eighteen," he admitted, voice thick with lust. "Watching those tits grow, that ass get thicker, knowing your womb's ready for family cum." Mia cried out, her pussy clenching tight around him as she came, juices dripping down his balls. Jake didn't slow down. He fucked her through it, pounding deep until his cockhead kissed her cervix with every thrust.
He pulled out just long enough to spin her around and lift her onto the table, spreading her legs wide. Her pussy was pink and glistening, lips parted and ready. Jake shoved back inside in one stroke, watching her face twist in pleasure. "Look at you, taking your brother's dick like a breeding slut. Gonna pump you full, make that belly swell with my kid."
Mia grabbed his shoulders, nails digging in. "Yes, do it. Cum inside me. Breed me stupid. I want to feel it leaking out for days." Jake grunted, pace turning frantic. His balls slapped against her ass with every thrust. Sweat slicked their bodies. He leaned down and sucked hard on one nipple, biting just enough to make her yelp and grind harder on his cock.
When he came, it was a flood. Thick ropes of hot cum blasted straight into her fertile pussy, pulse after pulse filling her up. Jake kept thrusting through it, pushing his seed deeper, making sure it stayed. Mia moaned long and low, her own orgasm milking him dry. "That's it, take every drop. Your brother's breeding you good."
They didn't stop there. Jake carried her to the couch, still buried inside, and laid her down. He fucked her slow and deep this time, grinding his pelvis against her clit while whispering every dirty thought. "Gonna fuck you every night until the test turns positive. Fill this cunt morning, noon, and night.
Make you walk around with my cum dripping down your thighs."
Mia wrapped her legs around him, heels digging into his back. "Do it. Use me. I'm your personal cumdump now. Breed your sister until I'm pregnant and begging for more." Jake's cock never softened. He flipped her onto all fours again and took her from behind, watching his cum-slicked shaft disappear into her over and over. Each thrust pushed more of his load deeper, some already starting to leak out around his base.
Hours later, after multiple rounds, they lay tangled on the floor. Jake's hand rested on her lower belly, possessive. "Think that did it?" he asked, voice still rough. Mia smiled, lazy and satisfied, reaching down to feel the mess between her legs. "If not, we keep trying. Family seed belongs right where it is."
Jake pulled her close, already hardening again against her thigh. "Then we don't stop until it takes." The night stretched on with more raw, filthy fucking, both of them lost in the heat of forbidden breeding.
