As soon as we stepped into my room and shut the door, I grabbed my little sister's tiny body and tossed her onto the bed.
"Time for Round Two of our training, you little twerp! You'll pay for teasing me that much in front of Mom!" I growled.
She smirked. "Oh really? Let's see what you've got, big boy!"
I didn't know what had come over me all of a sudden. Maybe it was because, even in my previous life, I'd been addicted to incest porn—watching siblings or cousins fuck in secret. Just thinking about it now made me rock hard. And with Sharon lying on my bed, a sister who fantasizes about me while masturbating, I couldn't hold back any longer.
I climbed the bed, laying beside her as we looked into each other's eyes. I wrapped one hand around her slim waist, and pulled her for a kiss.