As others have written, a very slow pace to this one, but that was not a problem. The plot line with the eldest sister i felt was forced and uninteresting. The brother's storyline was better but I really didn't need it. The problem being, those two storylines took away from the really interesting story of Gu and the youngest sister. They had good chemistry and their scenes kept me engaged even when painfully slow. In the end, I couldn't handle the lack of closure this drama provided. I understand the reason for it, but it left me frustrated and unhappy. A good open ended drama I think gives you a good feel for how things could turn out or lets you know it doesn't really matter. At the end of this, I'm not sure if Gu is dead in a alleyway tomorrow or married with kids in 5 years...