Saeki Konoka

She is the source of Michio's problems. It is because of her and her constant harassment at school and her plague behavior that Michio will start doing all this.
Her greatest "rival" is Wakana, because she always defends "the waste" and annoys her that she goes out with "a submissive".

She is the fourth "actress" of Michio and the one with whom he has his first real sexual experience by raping her in direct on the web.

He manages to keep her silent by threatening to show a version of their sextape without the censored face. She will listen to him because she doesn't want people to know she has sex with the "rubbish" of the school.
For the moment ...

Although they hate each other at first, they will begin to appreciate each other more and more over time.