I had mixed feeling about this drama. It started out pretty well, but lost its charm along the way, but not not enough to stop watching it. I was curious about how the ending would turn out, and I was disappointed about the ending. Lee Seung Gi did an amazing job as Son O Gong, but I didn't like the female lead. I've seen her do better in other dramas. I loved Buja and would have liked a better ending for her. The Devil King stole the whole show. He did an amazing job, annoying at times but attractive. Unlike many other reviews, I didn't feel the chemistry between the leads, something was lacking between them.
But the best thing about this drama was the ost. The ost should definitely win the best ost of the year. Even a bad drama could turn better if it has a good ost, and this drama is one of them. Overall, I liked this drama, but not enough to watch it again. I would recommend this drama to anyone who have watched every other drama and would like a drama different to typical kdramas.