I turned my sister into a reverse rabbit slave for three days! WAAA-543

Anyway, my older sister dotes on me and worries about my studies, so she always tutors me diligently. "If you get a perfect score, I'll do anything for you," she said, so I studied hard... and even made her my personal "reverse rabbit slave"! At first, she reluctantly served me, but when I ordered her to have sex with me, she started jumping around and having crazy orgasms! She gradually became more obedient, her face softened... and she even offered to give me oral sex and breast sex! I've trained her to my liking! These past three days, with my parents away, I can use my "sister rabbit" vibrator to do whatever I want, ejaculating as many times as I want!