Searching for a yaoi manga

I read before a yaoi manga but I forgot the name if anybody could help I would be thankful
So the story goes this way (but I really forgot much of it):
A teacher who finds a writing copybook for one of the students and he reads what in it. The student asks the teacher to return it but he doesn't. Teacher thinks that the writings of the student is really skillful so he takes him to a specific place ( I don't really remember what was that place but it involved literature).
Some other events I remembered is that the student finds out the teacher is gay when he sees him kissing another guy.
Also, that student entered a bar so the teacher asked one of his friends who where in the same bar to take care of him ( well he ment just to watch him) but the friend understood that 'take care' in a different way and captured the student to rape him. At last, the teacher came to rescue.
That all what I remember thanks in advance(⌒▽⌒)