Hello, folks. Trying to find manga, here's things that i remember about it.
Main hero is male, black haired. I think he was bullied by some girl or smth, but not sure. After he gets home he finds site or something like this where he sees fetishes of girls in his school (like "likes to be lectured" e.t.c). After that he uses this to get back at girl who bullies him, i think, and story proceeds.