Maybe I'm just easy to please or my intrigue with K-dramas and C-dramas is so new that I love them all but I personally enjoyed the story line. It wasn't typical. It took Dr. Jekyll and Mr. Hyde and flipped it and I completely loved it. The love story was awesome. Even the story line surrounding the trauma. I don't know enough about DID other than what I studied as a psychology major to be annoyed with whether the portrayal was correct but I believe the writers did enough research to know what it looks like to have two completely personalities dwelling within one person. The male lead is gorgeous and Sung Joon's portrayal of his character is amazing. His voice is soothing as it should be as a doctor in his profession. He lulls you into a sense of security with him and then. There are things to complain about but I found more to love than complain. It was a love story through and through but not the typical one. Watch it!