chikichiba's manga / #Psychopath(1)

so there's a murderer, and the murderer is a serial killer bcs the murderer is killed a bunch of women. and as the tittle say, the killer is the male lead, and female lead and male lead is used to be childhood friends back then, but the male lead change his apperance and now he's trying to be close with fl, the fl is still haunted by her childhood trauma and ml is be part of it, so there's a lot of tragedy and question about fl's childhood and what happen to the both of you back then. and at the same time he's a psyco and murder is still on going, there's a lot of mystery in here, lot of drama and not really romance. and the second male's face is actually so similliar to the male lead