This is a Percy Jackson and harry potter crossover. Percy Jackson receives a quest from Dumbledore to go protect Harry at Hogwarts I know that the time periods for each separate character doesn't make sense, so let's ignore it.
This is the story of an extraordinary little girl. Orphaned as a baby, Emily grows up as a peculiar ten-year-old with abilities that not only frightens the other children but also herself. Read along as she lives her life as the now adopted daughter of a powerful woman, a professor of Hogwarts, A school of Witchcraft...
Percy Jackson is broken. After the Giant War, Camp Half-Blood's protective barriers were destroyed, and he was the only one who escaped. He watched his friends and family be slaughtered by an army of monsters, and he has nothing left to lose. When Professor McGonagall comes to ask if he could teach a class called Defe...