Favorite Male Protagonists in a Kdrama

Last time I tried to do this list it got out of hand because I love sooooo many Kdrama characters. So this time I am separating the protagonists from the antagonists and the supporting characters. I have listed the dramas the characters are in, and here are the characters: Lee Jae Han; King Sejong (I know people might think that Jang Hyuk's character is the protagonist of this drama and he is, but I contest that King Sejong's role is so big that there are actually 2 protagonists); Kim Boong Do; Doctor's Son; Wang So; Eun Oh; Lee Jae Ha.