The Demon Prince of Momochi House volume 5 features story and art by Aya Shouoto.

Himari Momochi inherits Momochi House, an estate that exists on the barrier between the human and spiritual realms. The waters of the seven sacred falls have become polluted, and Himari, Aoi, and the shikigami cross over to the spiritual realm to find the cause. But during an attempt to purify the waters, Himari is taken away by the dragon god!