The story centers on Airi, a traveling medium assisted by her deceased sister Miku's ghost, hired to exorcise a male "Gaping Mouth Man" spirit from a remote house; the narrative twist reveals the living humans and their secrets as the true threat, explicitly subverting traditional J-horror kaidan tropes of vengeful female ghosts. Director Dave Boyle has stated the intent is to flip genre conventions by showing "the living are much more terrifying than the dead," with no references to identity politics, systemic issues, or social justice themes. The all-Japanese cast plays original roles in a Japanese setting with no race, gender, or sexuality swaps.

The sister relationship is familial and plot-functional, not framed around any contemporary identity exploration. No creator statements, plot points, or reception signals indicate progressive messaging; searches for controversy or DEI elements yield none. The film prioritizes atmospheric dread, practical effects, and genre subversion over any ideological framing. Casting evidence: Casting research is incomplete or contains unresolved comparisons; overall casting fidelity has not been established. Documented credits include Moeka Hoshi as Airi; Kurumi Inagaki as Miku.