AVOP-310 Suddenly, I got an incredibly cute stepsister! And when I transferred to the school my sister attends, it turns out that everyone in the class is a girl except for me!

Suddenly, I have a stepsister who is in the same grade as me! And to make matters worse, she's in the same class when I transfer! What's even worse is that the school used to be an all-girls school and now I'm the only guy! This should be every man's dream of a super harem development!... But because my stepsister exposed my entire masturbation scene to the whole class, it started off the worst possible way... However, information about me having a big dick also spread, and girls who are very interested in big dicks tried all sorts of ways to make me get hard! In an unexpected reversal home run state, I finally entered the internal ejaculation harem mode!