The reason why I watched this drama was out of curiosity because of the vast amount of criticism I kept seeing. And, after watching it I see why that happened. Story: 1/10 The biggest problem that this drama had was the script and story line. As I watched the drama I felt like I was being insulted. The writers gave so little thought to the viewing audience in terms of background and reasoning. Once I completed the drama and looked back on what I had just watched, two scenarios filled my mind. One, the writers gathered in a room, wrote down a bunch of ideas and randomly pulled them out of a hat each episode. Or two, they had so much that they wanted to fit into the drama that they didn't have enough time to delve deep into the situations and instead, caused total chaos and confusion. Acting/Cast: 8/10 A lot of people had a problem with Shin Se Kyung's acting. After seeing her in many dramas, I realized that she is an actress that doesn't have a wide range of facial expressions. Her happy face, sad face, confused face, or even her angry face, look pretty much the same. This was even more obvious when working alongside actors/actresses who use their faces actively while acting. I think that she is an okay actress, but this role just wasn't the right fit for her. And the chemistry between the two leads was just horrible. There was no sparks and it became painful to watch. I was eager for their scenes to end and watch the side characters instead. The other actors/actresses did a phenomenal job. They played their roles well; however, no matter how great a job they do, if the script is garbage then there is no salvation for the drama. Music: 9/10 Now the music on the other hand was amazing.Overall they felt almost mystical-like and were very easy on the ears. The singer's voices fit each song well and they worked perfectly in the moments they were played. My favorite OST was Glass Bridge By Savina & Drones (???????). Rewatch Value: 1/10 I will never watch this drama again. I got through it once because of the actors and music but the drama is too infuriating to watch it again. Instead, I'll just watch other works with them in it. Overall: 5/10 The tragedy of this drama is the wasted talent of the actors/actresses and beautiful OST set. It had a lot of promise but the haphazard job done by the script writers and the casting of the main female lead ruined the whole drama. I always say that you should try it to see how you feel about it but this time I will say that with a warning; be prepared for confusion and constant wondering if you missed something in the previous scenes.