Ninja and animal lover Jiro Azuma's life is changed forever when he finds himself in the middle of a war of ninjas vs. Demons. Jiro Azuma is descended from of a long line of shinobi, and he also can talk to animals.
One day, he rescues a very unique black cat named Rago, a supernatural being, and is dragged into a secret supernatural war. Inside the illusory world generated aby Fuyo, Jiro and Rago face off against a giant mononoke named Amagi.