Percy Jackson is not a son of Sally Jackson, but a son of Lupa and Poseidon. He is only immortal not a god he comes to CHB and is treated with respect by the seven( Frank and Hazel live at CHB), but when things settle down and Lady Hecate shows up in the big house with a quest right after the war will the seven accept? Harry Potter is the first person defeat Voldemort twice. When he returns to Hogwarts and sees seven exchange students from Hecates school of Magic how will he react. Especially to the one who always growls when frusturated? Can they live with each other for a year and live in peace or will they fight and start a new war when there is a bigger enemy? - I am keeping Sirius Remus Tonks and Fred alive