The show was long with 63 episodes, which may be boring for some people. I think the casting was pretty good, but the script was a bit lacking. The OST was AMAZING. However, one thing I disliked was the fact that Jin Mi always needed saving. It was like she couldn't do anything that didn't involve one of the love interests or some supporting character helping her. The ending does make this better, and you will need a lot of tissues to watch this.