Tōru and Noburo are brothers of the Takagami Family. Toru has Yin in his blood and is constantly targeted by the yōkai and other creatures lurking in Japan. When Tōru is targeted by one, his brother Noburo releases the fox deity Kūgen Tenko who protects Tōru from the monster. Kūgen now acts as the protector of Tōru and Noburo to keep them safe from any threats to them, while at the same time trying to adapt to the modern world.

(Source: Wikipedia)