Several hated the boy in the first chapter for his way of being and design, but the one who decides how a character should be in the story is the author or director. I think everyone wanted a sequel teacher/shota and not this. In the conversation the boy tells him why they had sex, she evades him saying that he loves children. I already had the feeling that she was a whore, only interested in having sex with either men or women. I think he's even able to be with several of his students or old fat guys at the same time if there's a third chapter.