I'm not an expert on Korean movies but I'd say that this wasn't bad at all. Obviously, a two-hour movie cannot have the same depth of character development as a 16- or 20-hour drama series but since the main focus was on the main characters, I think you had enough time to get attached to them. I even shed a few tears at the end of the film (or then I'm just too soft... :P) This movie isn't full of drama but it is not a light one either since it touches upon themes like violence, alcoholism and depression. However, all these themes are illustrated in a warm-hearted manner, not too realistically, and hope is definitely present all the time. This is certainly not too serious a movie, and that is largely because of the more or less twisted and dark humour that spices the story up and makes you laugh. The overall plot goes onwards at a good pace and has some interesting twists that I was unable to predict, especially at the end. Shin Hyeon-Jun portraits in a very endearing way the professional killer Hyun-Jun who is a serious, warm hearted and troubled man questioning his profession and quietly looking for someone he could talk to. Kang Hye-Jeong's Jin-Young is a bit crazy, not an ordinary woman, but very adorable. This movie has some very endearing and funny scenes and that is why I liked it so much. The main characters are very likeable as well. If you have two hours to spare, go and watch it, it isn't a waste of your time.