As a descendant of the famous Tsuchimikado shaman clan, Harutora is a failure; he has no talent, can't grasp magical theory, and can't even see spirits! Thankfully, his cousin Natsume is the heir to the family line instead, but unfortunately for the girl, it puts her in the crosshairs of other shamans who hold grudges against their clan or seek to exploit her power for their own. To help keep her safe from the dangerous world of the supernatural, Harutora decides to become Natsume’s familiar and protector. So together, they learn about magical techniques, banishing spirits, and fighting together as a team - while doing their best to keep Natsume out of harm's way.