I enjoyed this show immensely. The story was fresh, the production was beautiful, and the ending was satisfying. I can only think that all the negative reviews are from people that were just looking for a different kind of show.
I felt that chemistry abounded between the main leads. It was made very clear that the desire was not for passion but for contentment.
I'll admit that I didn't understand why Ji-O loved Seo Yeon, but I believed he did. The side characters built a contrasting world convincingly.
I won't forget these characters. I was left feeling peaceful.