Momochi-san Chi no Ayakashi Ouji

Himari Momochi, an orphan raised without knowledge of her ancestry, receives a life-changing gift on her 16th birthday—an inheritance of the mysterious Momochi House, a mansion that serves as a gateway between the human and spiritual worlds. Arriving at her new home, she discovers it occupied by Aoi Nanamori and his companions, Ise and Yukari, who warn her of the dangers within. Despite their insistence that she leave for her safety, Himari is determined to reclaim her family's legacy and uncover the secrets of the Momochi House.

Her resolve is tested when she learns that Aoi, one of the squatters, is the mansion’s guardian, bound to the house by a curse that erases his existence from the human world. Aoi's fate moves Himari, and she vows not only to stay but also to help free him from his eternal duty. Together, they navigate the thin line between the living and the supernatural, while Himari learns to embrace her role as the true guardian of the threshold, uncovering her own strength and connection to the mysterious estate.