Saenome are charged with sealing spirits that possess objects and threaten society. These spirits, known as tsukumogami, are typically non-violent, and saenome usually seal them following a simple verbal exchange. Hyouma Kunato, traumatized by a prior deadly encounter with a malevolent spirit, refuses to employ peaceful methods and engages in physical confrontations with every tsukumogami he meets. Considering this conduct unacceptable for a future clan leader, Hyouma's grandfather, Zouhei, proposes that he move in with Botan Nagatsuki, a young woman whose family consists of six tsukumogami—otherwise, he faces excommunication. Determined to track down the spirit that took everything from him, Hyouma reluctantly accepts Zouhei's proposal. As unknown groups of evil spirits begin to jeopardize the balance between worlds, the young man must earn Botan's trust and overcome his hatred for her mysterious family.