I slammed the door behind me and stared at my sister Emma across the kitchen. She was twenty-two, bent over the counter in a tiny tank top and shorts that barely covered her ass. "You fucking tease," I growled, my cock already hard in my jeans. "Walking around like that after what you said last night."
Emma turned, smirking, her nipples poking through the thin fabric. "What, that I want you to breed me? That I want my big brother's cum pumping me full until I'm knocked up?" She licked her lips. "Dad's gone for the weekend. Mom's at work. It's just us, Jake. So do it."
I grabbed her by the waist and spun her around, yanking those shorts down. Her bare pussy was already wet, glistening.
I shoved two fingers inside her without warning. She moaned loud and dirty. "Fuck yes, finger that cunt. Get it ready for your dick."
I dropped my pants and slapped my thick cock against her ass. "You want incest? You want me to fill this pussy and put a baby in you?" I lined up and rammed in balls-deep in one thrust. Emma cried out, pushing back against me.
"Harder, brother. Fuck me like you own me." I pounded her right there against the counter, skin slapping, her juices dripping down my balls. Every thrust made her beg. "Breed me. Shoot that hot load deep. I want your cum swimming in my womb."
I reached around and rubbed her clit fast. She came quick, pussy clamping down, screaming my name. That tight squeeze pushed me over. I buried myself to the hilt and unloaded, thick ropes of cum flooding her. "Take it all, slut. Get pregnant with your brother's baby."
We didn't stop there. I dragged her to the couch, bent her over the arm, and fucked her again from behind. This time slower but deeper, grinding so my cum stayed inside. "Feel that? My seed's already in you. Gonna keep fucking you till it takes."
Emma reached back and spread her cheeks. "Don't pull out. Fill me again." I did, grunting as I pumped another load into her. We spent the afternoon like that, raw and filthy. On the floor, her riding me, tits bouncing while she chanted "impregnate me, impregnate me." In the shower, me holding her up against the wall, water mixing with our sweat and cum.
By evening she was leaking, thighs sticky. We lay on the bed, my cock still inside her as we caught our breath. "Think it's done?" she whispered, grinding slow. "One more time, brother. Make sure I'm carrying your kid."
I rolled her onto her back, legs over my shoulders, and fucked her missionary, deep and deliberate. "You're mine now. This pussy, this belly growing with my child." I came harder than before, holding still so every drop stayed put.
We didn't leave the house that weekend. Every hour I took her again, raw, dirty, filling her until she was swollen and satisfied. By Sunday night she was glowing, already talking about the test she'd take in a few weeks. I pulled her close, cock twitching inside her once more. "Whatever happens, we keep doing this. You're my breeding sister now."
Emma smiled and clenched around me. "Good. Because I want more."
