Aoi Tsubaki has been able to see Ayakashi since she was a child. Abandoned by her mother Aoi was raised by her grandfather who eventually died. She encounters a hungry Ayakashi whom she gives her lunch to. The Ayakashi, an Ogre named Odanna, kidnaps her to the Ayakashi's Hidden Realm, where he runs an inn named Tenjin-ya. Aoi's grandfather frequently visited Tenjin-ya where he amassed a debt of 100 million yen and offered Aoi's hand in marriage as payment...