Well, I want to be concise.

PLOT - Like it even if I don't know much about Korean monarchy. I wish the relationship between the 2 Korea's were like that! I don't think a conglomerate could have a mad and fragile guy like that. How can nations policy be driven by a guy, some corrupt politicians without any gain?

ACTING - love it! The ML and FL were great. All others also. John Mayer was very good and that is why I hated him. But, a couple of things...
FL - I don't think that a strong, powerful woman like her could be so childish in terms of love in the beginning...
ML - too stupid in the beginning. The transformation was way to great. Don't understand his thoughts in the WOC competition at first, completely ridiculous...
Kang-seok should have met the female band members!!! Huge flaw!!!!

OST - don't appreciate that kind of music but I think it was well put in the drama.

REWATCH - maybe but passing forward lots of scenes!

In sum... A interesting story to "paint" a good romance. It was entertaining. I lack some knowledge about the relations between the 2 Korea's, the public view about monarchy but I didn't know that the king had such influence...

Do you romance? Please watch...