So this is a manga I saw at mangafox which I forgot to bookmark.
It was about a boy who disguises himself as a girl in school and then his classmate, idk the name
tells/asks him casually whether he is a boy and the crossdressing boy just seemed surprised on why he knew then the classmate just says that he is good at things like that.
Then later he blackmails the cross-dressing boy and the blackmailing gets worser and worser
then at the end of the chapter it shows that the classmate becomes his brother since their parents were getting married to each other . . .

Would someone help me with what manga this is ?
Please, I really appreciate your help . . . 🙂 😢 😕