I am really disappointed with this drama. During the first 5 episodes, I really thought this drama was going to be great. The story was interesting, and the cast seemed fitting. It was funny, and sweet with some suspens...until the whole thing drowned into melotramatic clichés. At some point, the actors stopped talking to each other, and instead began to just speak their lines with an affected manner, giving the audience the impression that they are philosophizing all episodes long, talking about "where they are in their relationship", and trying to convince us that they are about to kill each other, when actually there is not enought tension between them to generate so much as a slap. I think the story also needed a strong opponent. Instead we got the evilness "because we are so evil and beautiful and cool and with a dark past it makes us even more evil". It wasn't so bad that I would go as far as saying it would be a waste of time to watch it (come on, there IS Joo Won), but to me this really wasn't a good spy drama. No, to all those who like spy dramas, I'd recommend the awesome Time Between Dog and Wolf, but not 7th Grade Civil Servant.