Demons

AU, Post-DH: Harry Potter lost his magical abilities after defeating Voldemort, and very shortly after, lost his mind. Over a decade later, upon his release from Azkaban prison and having had his wand snapped, Severus Snape finds him in a New York mental hospital. Snarry. Slash. Sub!Harry. Dom!Severus. Eventual domestic discipline/corporal punishment (cp), spanking of adults.