I've been wondering about it too, since I'm planning on expanding my tumblr drama theme list and am currently working on "ambition" and "one against all" themes. But I have no time to be waching more dramas these days, so I can only stick to the few titles that come to mind but which you probably watched already.
I think, Dae Mul is one. Cain and Abel have that element too in the context of ambition. Bad guy, in a way, too, though it relates tightly to the theme of revenge.
Hungry! is starting to develop such a theme, but it's a standard foodie romcom drama.