My busty, hot stepsister always attacks me when I'm sleeping whenever she argues with her boyfriend, forcing me to comfort her and ejaculate inside her several times. (Hamazaki Mao, HMN-303)

My stepsister, who likes scumbag boyfriends, straddles my penis every time she argues with her boyfriend. "Is it because I'm bad at sex that I got dumped? Let me practice." She uses me as a sex practice table, and even to vent her anger at being cheated on, she does the same thing over my boyfriend's penis. My stepsister's vagina is incredibly sensitive, and she gets wet immediately. Is it not just her heart that's crying out, but even her vagina? "You can never betray me." This is the strange relationship between my stepsister and me, who, even after we're married, always seeks comfort and ejaculation from me during arguments.