Movie
Description
Ayane Satō exists as a ghost, permanently bound to an abandoned airfield. Only individuals near death who light fireworks at the location can see her. She manifests as a young woman with auburn hair and brown eyes, projecting a composed demeanor distinct from a vengeful spirit.

Her mortal life ended tragically at age 20. Fleeing her home after an argument with her mother during a storm, she was struck by a vehicle. Though the collision didn't kill her instantly, the driver concealed the incident by placing her injured body into a suitcase and burying it alive at a landfill. This unresolved death tethered her spirit to the physical world.

Her spectral existence is defined by profound loneliness and an inability to experience ordinary joys like travel or forming relationships. She actively searches for her remains to provide closure for her mother, particularly seeking a distinctive brooch that could identify her body. Her interactions with the living are confined to those emotionally or physically close to death; with them, she engages in dialogue about mortality and life's value.

During her existence, she forms a connection with three living individuals drawn to her legend. She challenges their fascination with death, consistently emphasizing life's possibilities over the permanence of the afterlife. Her most significant bond develops with Tomoya Sugisaki, whose struggles with parental expectations make him receptive to her perspective. She repeatedly urges him to embrace his aspirations instead of romanticizing death, acting as a catalyst for his personal growth.

Her narrative concludes when the group locates her remains in the landfill. Recovering the distinctive brooch allows her spirit to achieve resolution. She returns the brooch to her mother, providing emotional closure, and subsequently passes on peacefully. This act of resolution also indirectly influences the living characters to confront their own challenges, though her direct involvement ends with the return of her remains.

Beyond the core film narrative, the character appears in adapted media: a manga serialized from October 2021 to June 2022, and novel expansions released in October and November 2021. These adaptations maintain her established backstory and role without introducing new character developments or alternate interpretations.

Her thematic function centers on juxtaposing the allure of death with life's potential, particularly through dialogues contrasting her regret over lost opportunities with the living characters' ability to change their circumstances. This dynamic reinforces the narrative's exploration of mortality without prescribing moral judgments.