Responses
Lol this made me laugh so hard cuz I didn't really think of that but it's literally the most logical reason!!! (ノ≧∇≦)ノ ╧╧
^ I mean the first reason u came up with lol
Oh it could be XD
Maybe he got a flashback!! So he froze? I really don't know.
I think that Sangwoo stabbed the Policeman but just had this shocked expression because he got blood on the floor even though he just cleaned the kitchen after Bum's suicide attempt.