Harry Potter : Occurrit Luna Lumen

AU:After suffering from an attack at the hands of DADA Professor Remus Lupin, newly infected with Lycanthropy, Severus Snape finds himself struggling to co-exist with his animal nature and continue his work as a spy for the order within The Dark Lord Voldemort's ranks, The Potions Master finds an unexpected ally in the most insufferable know-it-all with bushy hair. (Snape and Hermione love story)