looking for this yaoi manga where the mc has a younger brother who is obsessed with him. the younger brother plays the piano and because of him the mc had to leave home, the younger bro always steals the mc's boyfriends and such. at the starting of the manga, we kinda feel bad for the younger bro but later on we find out hes creepy asf. the younger bro was gonna steal the mc's new bf but the bf chooses the mc over the younger bro. anyone know this ?

Bit of a late reply, but I just saw this post and I'm 99% sure you're looking for No Color Baby (: