this Manga please somebody, help me find it

Its of a teacher x student, i think its only a couple of chapters. The main is the student with lighter hair who bullyies the black haired teacher accusing him of being gay. He plays like pranks on the teacher or tells the other students hes gay i think at one point he puts a used condom in the teachers desk or something. then the teacher confronts him when he catches him alone in a class, now things become more ;)He had had a bad experience with a man before now he is in a i think bondage using relationship with the teacher who makes him his pleasee im trying so hard to find it again