read my eulogy (слэш)

The three Unforgivable Curses were classified as such because they work differently than other dark curses. There's dark and then there's Dark. As soul magic, the kind that leaves an unavoidable taint on the soul of the victim and caster both, the Unforgivables fell into the latter category.
Perhaps if more people had remembered that the Killing Curse wasn’t the same as any other dark curse they wouldn’t have been surprised by Harry Potter when he returned to the Wizarding World.
As it was, nobody – not even the vaunted Albus Dumbledore, who really should have known better – was prepared for what the Killing Curse had activated in young Harry.
 
In which Harry loves Death, lusts after Voldemort, and wants everyone else to leave him alone with his skeletons.