I watched this because I like the main actress, and this drama does provide a vehicle for her to in effect play two characters, which I thought she did well. The cinematography and soundscape I thought might've been the most artistic I've seen in a K-drama. In short, the drama is about people having to deal with emotional trauma and poses the question "What makes a person happy?" I gave it a low rewatch rating because it's such a challenging watch. If you like shows that are real heavy for the vast majority of the show, then maybe you you'd like to watch it more than once. I'd rather rewatch something fun. I did like this drama, but it wasn't fun to watch.