Dumbledore proclaimed Rosina "Rose" Lillian Potter the "Girl-who-lived" and sent away her brother Hadrian "Harry" James Potter the real boy-who-lived to the Dursleys. They think that Hadrian is at the Dursleys when he is actually raised by the founders and merlin. He learns new Powers and comes to Hogwarts and gets sorted into Slytherin with his best friend Draco Malfoy. He then meets his godfather Sirius Black and uncle Remus Lupin. He is an absolute prodigy. The direct heir of Merlin and the founders. The light won't know what hit them. Disclaimer: This is not my original story, Original story: https://archiveofourown.org/works/5243351/chapters/12096080