It has been a year since the incident. Rin and Yukio are called to Mephisto's office to discuss a mission. Rin has to go to Gehenna and attend a school for demons learning to hide in Assiah. He has to send letters in every week so the exorcists know if the school is a threat or not. What happens when Rin makes friends with some of the demons at the school? -------------------- Takes place after the anime cannon, season 1. The reason I picked it to be compliant with season 1 is because while writing one of the first drafts, it didn't fit with the manga cannon. It does contradict with the manga(even though I love the manga with all my heart). This uh, got a bit out of hand with the lore but I hope you all have fun! Original story of Blue Exorcist is not mine! I only own the Original Characters in this