Nanami Momozono is alone and homeless after her dad skips town to evade his gambling debts and the debt collectors kick her out of her apartment. So when a man she's just saved from a dog offers her his home, she jumps at the opportunity. But it turns out that his place is a shrine, and Nanami has unwittingly taken over his job as a local deity!

Akura-oh's body was entombed centuries ago in the Mountain of Flames, where the preternaturally hot fire continuously consumes him before his regenerative powers can resurrect him. If Kirihito can reunite Akura-oh's spirit with his body, the terrifying yokai will be able to escape his prison and wreak havoc again! Can Nanami and Tomoe catch him in time--and are they strong enough to stop him?!