When I forgot the erotic book I borrowed from my friend in the classroom and went back to pick it up ... It all started when I saw a serious and unfriendly class president masturbating while looking at the erotic book. If you grasp your weaknesses and talk about naughty things with such a light feeling, "You say that you should massage your boobs, right?" After that, I was secretly filthy and made into a sex slave everywhere in the school, such as the infirmary, toilet, and library.