Hinaru, a human survivor of a vicious mikura attack, is thrust into Shinjuku’s clandestine supernatural warfare. Her transition from rural migrant to city dweller scraping by through menial jobs reflects the narrative’s core themes of urban migration and fractured identity. Though haunted by repeated paranormal assaults, she clings to pragmatic optimism, embodying everyday resilience against both economic hardship and otherworldly threats.

Marked as a witness after surviving a water-goblin’s assault, she becomes pivotal to detectives Sagisaka Minoru and Narumi Kure’s investigation into supernatural-linked murders. Unknowingly straddling human and yōkai spheres, her peripheral role sharpens during the apocalyptic climax—cornered in a police-ordered shelter, she observes Ushi-oni’s devastation and Sagisaka’s martyrdom.

Post-cataclysm, Hinaru evolves from casualty to symbol. Her resolve to rebuild in Shinjuku’s ruins, defying the exodus of others to rural safety, crystallizes the story’s focus on urban perseverance. Deliberately stripped of elaborate backstory or personal evolution, she functions as a thematic pillar, channeling the series’ prioritization of societal reflection over individual growth. Her narrative arc remains exclusively defined within the original OVA’s confines, with no supplementary media expanding her journey.