The female lead was acting retarded. Like seriously autistic. I don't know what she was going for there, dazed and confused, goofy, stupid, silly, but whatever it was she didn't pull it off. I'm not even trying to be rude here, she literally acted as if she had maybe lower high functioning autism or something. I know this actress likes to play her characters kind of goofy (go watch You Who Came From the Stars that show was great and she stared in it) but this one was just oo goofy, As the show progressed she got a little less autistic but I dropped the drama a little less than half-way through because I just couldn't get past the annoyingness of her character.
Even though she's kind of annoying I know some people would probably not mind, so I say try it out! Except for her fuckery, the rest of the drama is amazing! I don't really like Lee Min Ho but this was his best drama in my opinion, and the plot, music, editing, action, romance was great. If the lead female (sorry I forgot her name) acted more dignified then I would give this drama a solid 9.5/10.