Inukami: a sacred entity with a canine appearance that forms a pact with a potent human tamer to assist in eradicating evil monsters and demons. Although Kawahira Keita descends from a long lineage of Inukami tamers, he appears to lack the requisite ability and has been abandoned by his family. One day, he encounters a cute Inukami named Yoko, who initially seems graceful, obedient, and beautiful... yet after forging a contract with her, Keita discovers that Yoko is a wild and mischievous Inukami whom no one has ever been able to control.