help pls u forgot the title

its a bl story and still in going i think. the uke was originally a black haired guy but then he dyed his yair red, and the seme was a sergent or sumthing and black haired as well. i think its a korean story. seme also constantly abuses uke. i remember a chapter where the seme abused the uke inside a bathroom, handcuffed and shi like that i think. and also, the seme burned the side of uke's forehead using a cigarette head. pls help