Whoa, I expect it to be dark but not this dark. But it took me by surprise, you will feel some emotion which you will think like " wait am' I supposed to be happy, sad, oh snap, or disgusted right now". The cast was really amazing, especially Yeo Jin Goo. He really played well his role. He really surprised me. It's really hard to find young actors that are really good at playing well their role If you like movies with action, killing, fighting against what's good or bad. Well, I guess you should give this movie a try. Just see this movie as the Korean version of Hitman. Like a side story. When he was little after becoming a real hitman.