Demons were only the beginning. After stumbling into a secret war between mages and legends, Nero finds himself bonded to a knight with a fractured past. Together, they fight not for the Grail-but to end its curse once and for all.

The Demon Slayer Corps were given a task to do, but it wasn't any normal task. Tanjiro and Giyuu had to go to a school called "True Cross Academy." They thought it would be a relaxing mission, but little did they know that it would be just like any other mission. Will they be able to finish their task, or be defeated by demons? I don't own Demon Slayer, Blue Exorcist, and any of it's art. Credits go to the rightful owners. ---------------------- This is an au. If you don't like AUs (Alternative Universe), I suggest you leave.