Saenome are tasked with sealing spirits that possess objects and pose a threat to society. Known as tsukumogami, these spirits are generally non-violent, and saenome normally seal them after a simple verbal exchange. Traumatized by a previous deadly encounter with a malevolent spirit, Hyouma Kunato refuses to use peaceful methods and gets into physical confrontations with all tsukumogami that cross paths with him. Deeming this behavior unacceptable for a future clan leader, Hyouma's grandfather, Zouhei, proposes that he starts living with Botan Nagatsuki, a young woman whose family is composed of six tsukumogami—lest he be excommunicated. 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 gain the trust of Botan and overcome his hatred for her mysterious family. Tsukumogami—spirits or marebito can possess objects of considerable age and gain a physical form. Although he is part of the Saenome clan that is in charge of peacefully sending them back to their own world, Hyouma Kunato despises them because one took away what was very precious to him. In order to cure him of this loathing, Hyoumas grandfather sends him to live with Botan Nagatsuki, a girl who is the master of six friendly tsukumogami and lives with them as a family.