Harry Potter the Spirit

Harry Potter - sweet, little boy. Severus Snape - snarky git, sorta. Severitus. Much later in the story, Remus Lupin... in a brothel? Snupin: Not Graphic. Post-Hogwarts. Major character death, but not for long. A little Dumbledore bashing. A little ghost is found by the Hogwarts ghosts. Can a particularly brilliant Potions Master do the impossible?