Who is he really?

Percy's the leader of Camp Demigod. He's the champion at sword fighting and swimming. He's the only person in the Poseidon cabin.

But at school, Percy's a loser, a loner. And apparently he's anorexic, even though he loves food. He gets 'bullied', only he doesn't care, never listens to them. But what happens when these so called 'populars' find out about Camp Demigod? When they decide to go one weekend. More importantly, what do they think when they find out that Percy Jackson, the guy they think is a loser, turns out to be the leader of the camp? What's Percy's reaction?

AU, ALL MORTAL. Don't read if you haven't read Percy Jackson and the Olympians and/or Heroes of Olympus. Has swearing