I slid into the pool, giving Anna a look for her to come. She swam over, giving me a massive grin as she reached me by the poolside.
"Oh Jake" she said as she ran her hands up and down my chest. "I need you to fill me up with your cock, I need my brothers cock in me, your incestous seed in my womb!" She moaned as she took my dick into her hands, pumping up and down the shaft.
I moaned in pleasure, smiling as she dove underwater to move to eye level with my cock. My sister smiled at me as she pumped on my cock, watching as it swelled to a massive erection. Then she took it into her mouth, and I felt the pleasure of an underwater blowjob. Anna kept on sucking, and I felt the rise of my orgasm. I shuddered as I blew my load into her mouth, grabbing her hair as she swallowed all of it.
She rose out of the water, arching her tots forward as she licked the last of my load from her mouth. She squeezed her boobs together sent me a smoky gaze.
"Jake that tasted so good" she moaned "I love the way your cum tastes in my mouth, but (as she rubs her pussy on my still hard cock) it would feel so much better in my womb!"
I smiled widely as I grabbed her waist, readied myself and plunged my long hard cock deep into my sister's cunt. Her head rocked back as her tail wrapped around my legs, pulling us both underwater. Her eyes bulged with excatcy, and we kissed, tongues fighting for dominance in our mouths. I thrusted into her, each thrust bringing me into her womb as I watched her scream in pleasure.
"Oh good my baby brothers the best fuck I've ever had!" She screams. Her massive breasts bob underwater as we join as one.
"I'm not your baby brother anymore!" I say ax I trust harder. "I'm your lover, your master, and you want my seed in your womb, you want my child in your womb!" I demand as I thrust.
Her eyes roll back in her head as she orgasms to my words and my thrusts.
"Oh good yes, bro, Jake, make me your bitch, make a baby in me, i LOVE YOU, I WANT IT, KNOCK ME UP!" She screams as her body shakes in orgasm.
"YOU ARE MINE" I scream as I let loose my seed, feeling it fill her womb. I pull out, watching her float stunned as my seed drips out of her pussy.
"My brothers cum" she says as she holds it, a ghost of her old self appearing. It disappears As her face twists into a grin.
I step back, satisfied at breeding my sister.