I don't know if this will be good but basically Percy Jackson is only the adopted son of Sally Jackson, his mother at birth was Circe. Also this is a Harry Potter crossover. This happens before the trials of Apollo and comes before the 39 clues crossover.

In the fourth book of the series Percy returns to camp half blood still sad from a recent death. Sadly like every summer he is launched into a dangerous quest. His friend has been spending time in a place he shouldn't. Sadly, Percy has no idea where he is and must focus on his quest. And Percy now has been revealed to the horrors of war. He also deals with his doppelgänger claiming to be from another dimension. Or at least a different book.

This is a story where the kids are all demigods. Takes place after the trials of Apollo and the summer after the one in the tv show. Phineas and Isabella have started dating. It is in a different dimension

This has all the links for the animated version of my fanfiction when the sea touches the moon.

The third book in the when the sea touches the moon series.

This is the second book in the series: when the sea touches the moon

When Percy Jackson woke up he saw his parents in front of him. Except they were not humans. They were gods. Both gods had decided not to have any children and there names were Artemis and Poseidon.