The story is incredibly well written, there are much more maturity then in a regular kdrama, the plot is really captivating, and the cast is wonderful (to tell the truth I was really impressed by Yoon Sang Hyun because of his absolutely brilliant and touching acting, especially when even without talking, only with his eyes, he was capable of transmit powerful emotions), only there is one disadvantage: Lee Jong Suk. I know that he's famous because of his face and I really have tried to get used to this guy because he's one of the most popular Korean actors and I'll have to see him but, somehow, in such a good, unusual drama and with such a flawless acting as Lee Bo Young's and particularly Yoon Sang Hyun's, it seemed unbearable to me see all the time the inexpressive Lee Jong Suk's face with the same insipid emotion of discomfort. Well, the true is that about the chemistry between him and Lee Bo Young we also shouldn't speak because such doesn't exist. And it was really strange to see the deep connection and attraction between the female lead and male second lead, while the main couple was absolutely forced (also, these silly typical Korean reactions when the male lead wants to kiss the girl more passionately and she doesn't let him "cross the boundary"... all this relationship was the only unbelievable and annoying element). However all the rest has made me such a good impression that the only evaluation I can give is 10.