Magical genetics are very complicated. Far more complicated than the typical witch or wizard knows. It was never as simple as Pureblood, Halfblood, Muggleborn. When one little girl-far too bright for her age-learns this, who she shares it with will lead the world into a revolution. But with age old prejudices ingrained into a society barely a decade after war, will this revolution be a good one? Can it? One little change on an otherwise ordinary day in Diagon Alley will lead to a chain of events that drastically alters the future of The Boy Who Lived. After all, there are millions of different ways a conversation in a robes shop can go. (This story works under the impression that Lucius Malfoy was not lying when he told the Ministry he'd been imperiused when he worked for Voldemort.)