y/n is a normal who has mafia boyfriend. she has overprotective brother name Bae bakhyun. Their family was killed by someone very brutually . y/n want to revenge on her parents death she couldn't do anything becase she is normal girl who live alone . Taehyung is mafia king but his relation ship with y/n only known by his gang. He want her to be safe . y/n can fight and some she part in street fight for money