Percy Jackson has been killed, maybe not physically, but still killed. Dead. Gone. But Chaos brings him back with some help from a few gods. He was betrayed by the ones he knew and loved. The ones who he would've given his life for in an instant. He held no love for the campers of both Half-Blood or Jupiter. Because when his flaw killed him because the ones closest to him don't care as he does, he becomes broken. He only trusts very few now, and if your not one of them, be wary.
Of course, like any normal story, he has to return and reveal himself. Something else is happening again, and as much as Percy hates seeing the old campers, his Patrons, and new Love, all need him there.
If anyone wants to use my storyline/characters/anything that I made, just let me know. I don't mind as long as I know. <3