You had died in action while fighting in the second Titan War. You went to the underworld and were fine. Fast fotrward to now Thantos got chained up and the Doors Of Death were no longer guarded. Monsters kept going back up the earth a line with mortals. I decided to walk through too. You snuck off and imaged camp in your kind before walking through.
When you opened your eyes you were standing on Half-blood hill. Everyone was talking running around, laughing and playing. You saw your friends Grader Underwood, Annabeth Chase, Percy Jackson, Will Solace and Nico Di Angelo talking together with six others. Percy just happened to look around and his face fell as he saw you.
Rain started to pour. From you or Percy? No one knew, well... Until lightning lit the sky.
You sword hung on your hip and you looked around at your campers because you were the leader. Kids started falling to one knee and bowed their heads, even Percy. The six you didn't know weren't kneeling though.