At first, like me, you may not like this series because of Goo Hye Sun's character's stubborn-like personality IN THE BEGINNING; BUT DO NOT DROP THIS SERIES. After a few episodes you'll be hooked, trust me, and the storyline is amazing. I absolutely love and shipped Ahn Jae Hyon and Goo Hye Sun in this, they're character's connection is so strong that they even married IRL. c: It may be a slow moving series, mostly because there are 20 1-hour episodes, but I was still truly satisfied with this series, and you will not be let down. That's all I'm gonna say. ;) Let the sleepless nights begin... c;