Honestly it's all Sangwoo's moms'fault, since Sangwoo have been experiencing these horrible things since he was a child, I think this developed into him wanting other's to experience what he experienced from his mother, I mean his mother has been trying to kill him even before he was born. This is a very good example of how our actions can affect others in a ripple effect, anayways love the story, it ain't your typical "they met, then fall inlove" kind of story, it's very violent, mind twisting, and not for the faint of heart but it was really good.
Killing Stalking