Oogi Takaya is a street-smart high school student, dedicated to protecting his best friend Narita Yuzuru. The two are wrapped up in an ancient war of darkness and tragedy, begun during Japan's chaotic Warring...

Filla, a demon-in-training, meets the angel-in-training Micael at school and is immediately fascinated by him. When they grow up, they become partners who work together to guide the souls of the dead to Heaven.