Himari Momochi inherits Momochi Hiouse, an estate which exists on the barrier between the human and spiritual realms. Himari and Aoi's summer together has passed by in an instant. When Himari wakes, she discovers that Aoi has been absorbed by Momochi House. The building begins to collapse as Aoi tries to release Himari and the shikigami. Is Aoi lost forever or can Himari save him?