The Grey Timeline (смешанная)

Harry Potter is twenty-four years old when he steps through the Veil in the Department of Mysteries, but fails to die. Instead he's sent back to the summer before his fifth year, has a conversation with Death, decides to save a few lives and also prevent the Light's victory in favour of bringing about the Grey Timeline, a balance of dark and light magic. But of course that's easier said than done, and every road to hell is paved with good intentions.
Or
Harry's a traumatized eldrich horror, Death doesn't understand human morals, Sirius has no idea how to handle his godson, a Death Eater daughter and a Half-Dementor are questionable company, and some shades of grey are so dark they might just be black instead.