I rate this 10/10 because this drama isn't only about a romantic lovestory. It's a 360° drama about love, family, friends and the saddest part is they show all the types of betrayal. Before watching it make sure your heart's ready to break into pieces because it's one of the saddest dramas yet THE BEST so far. It hurts so good.
Plus, the excellent acting of all the actors made it more effective. Special mention to Lee Joon Gi as the main character, no doubt he's one of the veteran actors in South Korea he amazingly portrayed 4th Prince Wang So showing all his emotions: lack of love from everyone surrounding him and life full of loneliness.. I fell inlove with his expressive eyes from the very first episode of this drama!