Pariahs (джен)

Soul-marks are everything in the magical world; you can only ever marry or date your soulmate, every person has exactly one mark and match, and even house-elves are slaves because of their lack of marks. The Killing Curse, Unforgivable because it erases the soul’s mark as well as killing the body, has no known survivors. Until it does, and Harry Potter goes to Hogwarts bereft of his mark, the subject of furious debate as to whether his presence dirties the school or if it should be allowed at all. As Harry learns more and more about the underpinnings of the magical world, his fury grows, and he allies with other outcasts to bring down the corrupt system.