What's this manga/manhwa title?

this story is about a boy(who has that kind of look where all girls love it)-charming..he is a playboy.but he cancel all his date with his girlfriends because his target now is a princess(in his school)but he x know whose the princess is.he is still searching...meanwhile,he meet a lil boy(so-called bodyguard of a girl[look like a princess])...any idea what title is this manga/manhwa?or suggestion please.by the way...he is like lelouch in code geass from my view.