This drama was.... Interesting at the first 6 episodes.. But when it reach episode 7... The dragging begins.. Eun Soo was funny, cute, even clumsy to me. She brightens up the scenes of the dark, Goryeo. Princess No Gook? VERY pretty.. I like her melodrama romance story with the king. At first I thought there would be a love triangle between Eun Soo, Choi Young, and Jang Bin. But, I was totally wrong. The other characters such as Hwa Soo In, Eum Ja (the flute guy), and others were exactly supporting roles who only have 4-9 lines per episodes. And, Choi Sangoong, who was supposed to be only figure role, has a LOT more lines more then them. I like the mixture of romance,historical, and fantasy in this story. And also in this story we didn't have to worry about 'the changing the history' thing because most of the time Eun Soo act more like a clumsy girl than a doctor. The ending? Perfect, masterpiece. Of course if you have watch Operation Proposal, Rooftop Prince, Queen Inhyun's Man, and Dr Jin you would be a bit bored of the genre 'time-travelling'. But trust me, this one's different. Aside from that, I also found this story dragging and sometimes boring of actions and politics scenes, but that's okay. Because ALL historical dramas have those scenes. IF you DONT watch historical/sageuk dramas, better skip this first and watch Dong Yi or Dae Jang Geum. There you will know why the characters are bullshits, lame, but smart.