Harry Potter won the Second Blood War and defeated his enemies... and was left with nothing. Decades later, he contributes to the creation of a revolutionary new piece of technology and destroys the future in order to rewrite his own past...

Harry mysteriously disappeared at age 6, and then benefited from years of tutoring from an old family friend. With the return of Voldemort, it's finally time for 15 year old, trained, somewhat cynical and sarcastic Harry to return. Full summary inside

Did you ever wonder why Death Eaters prefer to throw stunners at purebloods and more dangerous and deadly ones at half-bloods and muggle born? Why do Aurors only use non lethal curses even when faced with lethal ones? - Harry finds out. Chap 28 up! H/HR

After the debacle at the DoM, Harry's friends turn on him. So he leaves. Now the world begins to realise they've driven away their savior. How will they get him back? Rated for language. Harry!Harem. Heavily Edited and NEW CONTENT!