As much as I wanted to love this show, I was left scratching my head most of the time especially on the latter half because of all the questions I have while watching. Logic does not exist in this world, so if you just want to blindly follow Nok-du's story because of what it is, then I say go for it by all means!!! But if you care for the plot and story, and all the reason behind it plus your sanity, then maybe this is not the best show to watch.
Main reason I watched this show is to see Dong Yoon, eye candy is enough for me to go on and watch his cross dressing (he is so pretty lol) until the end because heck at that point I'm in too deep the plot that I just had to. BUT that doesn't remove the fact that I watched from episode 12 onwards on 1.5 speed. LMAO

Were my eye candy needs fulfilled? Yes, definitely. Would I care to re-watch for more eye candy? MEH definitely not. I can't help but compare it to Sungkyungkwan Scandal since they basically are the same type of drama and share a lot of characteristics. I would say I'll definitely rewatch Sungkyungkwan Scandal but not this one. (I might just be biased but not really since I really like Dong Yoon he looks like a baby).

TLDR: don't watch for the plot because it's bad, watch for Dong Yoon the baby