Hikaru Amano is a 25-year-old man who is dissatisfied with his life but dreams of becoming a writer. As he travels to work on the subway like every other day, an advertising poster leads him to meet two mysterious characters and learn about their strange task.

A woman grapples with her guilt over her younger sister's tragic death. Seeking closure, she returns to a rooftop where her sister fell to fulfill a promise she had made with her younger sister.

In the shadows of the Agatsuma Apartments during the solemn Obon season, the caretaker, Sato Ayato, navigates the building's tranquil corridors. As the season unfolds, a series of tragic events unfurl, blurring the line between celebration and despair. Caught in the midst of festivity and persona...