Percy is informed that he will have to teach at a magic school called Hogwarts. Just after a war. Harry is suspicious of his powerful new teacher and wants to find out what he's hiding. And why are Luna, Neville and Draco suddenly best buddies with each other and know the professor? I own nothing. STORY IS NOT MINE!!! ITS FROM FANFIC.NET @StarFlight13(although I will continue it)

Crossover between Harry Potter and Percy Jackson Harry Potter and the Half-Blood Prince: We all know the story: Harry gets a book in his potions class, allowing him to keep further ahead of the class. In that book, it says from the property of the 'Half-Blood Prince'. We all know who it is at the end, right? Or do we? The twist: Percy Jackson, Son of Poseidon, is sent to protect the 'Chosen One' after the Great Titan War against Kronos' Army. With the blessings of Hecate, he joins the Hogwarts family with his girlfriend, Annabeth Chase, admitting that both he and the Daughter of Athena are 'Half-Bloods'. Confused, Harry Potter tries to find out the history of his potions book by confronting Percy Jackson, making more friends along the way. Together, they discover secrets hidden within both the school and Professor Snape while surviving yet another year at Hogwarts Witchcraft and Wizardry.