Responses
May be this ? -
https://www.mangago.me/read-manga/boku_no_kareshi_no_sukinahito/
YESS THANK YOU SO MUCH
Welcome!
who remember this one yaoinwhere the uke and seme is already in a relationship but the seme has a hostile relationship with his own brother who is a teacher at the school where he and his byfriend is attending and turns out he actually had a crush on his ownbrother hence the hostile relationship to cover that up