Mystery Man (2014)
- Genre: Horror
- Release Date: 2014-01-01
- Runtime: 0h 7min
- Language: 日本語
- Production Company: Cloudy Hut
- Production Country: Japan
- Director: Koji Shiraishi
Spin-off short story of the "Senritsu Kaiki File Kowasugi!" series, which is set after FILE-04.
Unfortunately the movie Mystery Man is not yet available on HBO Max.
| Crew | Koji Shiraishi | Cinematography |
| Directing | Koji Shiraishi | Director |
| Visual Effects | Koji Shiraishi | Effects Supervisor |
| Editing | Koji Shiraishi | Editor |
| Writing | Koji Shiraishi | Writer |
