キミが消えてしまう前に

Due to certain circumstances, Akito, a high school student, is forced to transfer from his old school.

He accidentally wanders into an abandoned school inhabited by ghosts who harbor lingering attachments and are unable to rest in peace.

"I Have a Request for You"

Akito encounters a ghost girl named Nano at the abandoned school, who asks him to help one of the ghosts, named Tsukushi and Iroha, rest in peace.

Akito, who desires to live a life that is useful to others, follows Nano's words and begins attending the abandoned school to help the ghosts rest in peace.