Ones can get the great acting of Nam Gung Min if you have seen his previous roles as the really bad guy (specially in Remember- war of the son) the transformation is amazing. Hi give to his character an unique and funny style.
The writer almost kill every one in one episode. But killing a main role? adding the barely appearance with just taking importance at the beginning and ending without providing the romance role. Also why kill a kid that doesn't have done anything wrong?Baek Dae Gil is just going to regret spare his life. And yes one of my favorite kings roles.