I loved the boy who plays the young prince, a real star.
The prince, D.O from EXO I follow him as a singer but he's great as an actor too. I love when he walks with his hands behind his back and doesn't want to be touched (oh oh) even if he doesn't remember to belong to the royal family.
However, the question of marriage between the two is dragged out too long (even a second imposition of marrying young people) and the punishment for the villain was too light. He deserved much worse.
Up until episode 10 it was interesting, from 11 onwards a little less.