The Lone Traveler: Nemesis

Harry Potter, once the Boy-Who-Lived, is now the Lone Traveler, a dimension-hopping wanderer of the multiverse. His travels have led him to a world in which his own Fifth-Year self is about to confront Voldemort at the Department of Mysteries. But this time, he is not the only traveler to visit this world. And for once, Voldemort isn't the deadliest threat.