Percy Jackson , Protector of Earth
All credit goes to PercyJacksontheChicken on fanfiction.net.
here's the description
When things go downhill for our favorite hero, Percy Jackson, he leaves sight of the gods and demigods. Blessed by Chaos, he now patrols the Earth, protecting others, as well as running from a crazy hunter. But what happens when he is forced to return? Not your usual betrayed story.