Looking for yaoi manga where this high school student meets a new transfer in his school. ...

Looking for yaoi manga where this high school student meets a new transfer in his school. He think it’s the nerdy kid from his middle school so he tries to bully him, but fails because his victim is just so nice and has a good ero. Turns out the victim is kind of psycho and fucks him on the school rooftop, but the bully can’t fight back because he doesn’t want to lose his rep (rep’s really important to the bully). After a while the bully gets tired of it and says he wants to stop. So the psycho victim goes to his house, wanting to show the bully’s mother lewd pictures of the bully, but fails to