The Demon Prince of Momochi House, vol. 10

Himari Momochi inherits Momochi House, an estate which exists on the barrier between the human and spiritual realms. Himari is attacked by an ayakashi in the depths of Momochi House and is saved by the Guardian of the Gate. The guardian, wanting the Momochi name, tries to get Himari to marry him. Naturally, Aoi has no intention of letting him have his way!