Harry Potter became the master of death and later realises he cannot age nor can he die, he's been through three wars, and the world is dead everyone is dead and the last of the muggles died torturing him. he decides he has had enough and apparates into space to die however he doesn't die and ends up bumping into a sp...
After the war, Harry had nothing left. For hundreds of years, Harry walks the earth, a planet that he can feel dying under his feet. After meeting Jake Sully and his brother Tom, his life gets tipped upside down. And now, the death of his planet has forced him off and onto a ship to a new planet. OR...
It's post war and Harrison 'Harry' James potter is depressed. He's depressed that all these people gave up their lives for him. So in his sleep he just gives up. He dies peacefully in his sleep. After expecting to wake up in Kings Cross, he is shocked to discover he is in fact in Deaths Office. Turns out he is the mas...