Young lawyer Jiro receives a late night phone call from a distraught woman sending him on a journey to uncover corruption and exploitation stemming from those at the very top of society.
Unfortunately the movie Black Challenger is not yet available on HBO Max.
| Directing | Mitsuo Murayama | Director |
| Writing | Yoshihiro Ishimatsu | Writer |
| Writing | Kenrō Matsuura | Writer |
| Crew | Kimio Watanabe | Cinematography |
| Sound | Kuranosuke Hamaguchi | Music |
| Production | Takahito Miwa | Producer |
| Writing | Kazuo Shimada | Original Story |
| Art | Koichi Takahashi | Production Design |
