You guys should check this drama. This isnt about pure lovestory but a force who supports a Kingdom and when necessary kills the King to be able to gain the throne....
But of course they also are the one's who give any person who wants to become a king the chance, and from their Yoo Seung Ho has to protect his Kingdom he has to become stronger. He has been wearing the mask because he was poisoned when he was young. His father wants to hide his identity to keep him safe.
