I decided to watch this because of TOP because he is part of the drama. I'm not really into action unless I find the story or characters interesting. This drama is too long and a bit dragging in some parts but the action parts are definitely worth watching. I also want to commend the actors' acting especially the main lead. I can see chemistry between the two love pair. I might not re-watch it again because of its length but it's definitely worth watching for action fans. There won't be a second season if it's not, right? so it's worth a try.