After a Biowepon wipes out all nonmagicals on Earth, what poor guy ends up having to take over? Harry Potter leads the Gaia Arcana Imperium out from Earth across the Stars. MoD Harry/Immortal Harry, Powerful Harry, Smart but Oblivious Harry, Elemental Harry, Grey Harry, AUHumanity, Magical Humanity, Powerful Humanity. Rated M for future Language and Gore