On her sixteenth birthday, orphan Himari Momochi inherits her ancestral estate that she's never seen. Momochi House exists on the barrier between the human and spiritual realms, and Himari is meant to act as guardian between the two worlds. But on the day she moves in, she finds three handsome squatters already living in the house, and one seems to have already taken over her role!

Himari Momochi inherits Momochi House, an estate that exists on the barrier between the human and spiritual realms. All knowledge of Aoi's existence has been expunged from the outside world, but there is one who still faintly remembers him--Aoi's childhood friend Hayato Hidaka. Hayato seeks out Himari, but it is said anyone who becomes involved with him will be cursed!