Overview
Ayano, Miyu, Yuri and Mei are high school students. They learn about a fatal gas accident which occurred at a school in the past. The girls then experience unusual occurrences like hearing breathing from closed classrooms and seeing a person's shadow. Hitomi then sneaks into an abandoned school to shoot a horror video for the internet. Hitomi hears from her colleague Kimio about a fox's window which leads to the spirit world.
| Actor | Age then | Age now | |
|---|---|---|---|
 | - | - | |
 | 18 | 29 | |
 | 18 | 29 | |
 | 21 | 33 | |
| - | - | |
| 19 | 30 | |
 | 40 | 51 | |
| - | - | |
 | 28 | 39 | |
| - | - |