The Dark Ascension

Harry finds out about a shocking secret the Light has hidden from him. The Light has lied to him about his parentage. They manipulated him into being a weapon. Now, it's Harry's turn, with a plan to go back in time, he's going to fix the wrongs committed against him. Too bad things never quite go according to plan. MoD!Dark!Fem!Pureblood!Harry, timetravel-start of Hogwarts.