Magic could heal any illness or injury but the wizards hoarded it and killed each other over lineages with it. Magic drove people to such foolishness and insanity as abandoning a child only to hold her up as a messiah. Magic had taken everything from her. Magic was death.
Voldemort won the war and conquered magical Britain. But he'd been playing a very long game, and no-one expected the results. Very AU. Oneshot.
Harry Potter and his twin sister spent 10 years in the hell known as Privet Drive. Then one morning, a pair of letters arrived, and the contents drove them to escape their prison and seek out the secret magical world. After stumbling into a Diagon Alley bookstore, they were taken in by an immortal alchemist. Not for Dumbledore fans. Rated M for mentions of abuse and dark themes.