The story follows detective Heizo, played by Koshiro Matsumoto, who investigates Tanbei Chigashira, a notorious thief. Kumehachi, a former member of Tanbei's gang, claims that their former leader is an impostor. The real Tanbei Chigashira followed three strict rules: do not kill, do not rape women, and do not steal from the poor.
Is Samurai Detective Onihei: True Master on Netflix? Unfortunately the movie Samurai Detective Onihei: True Master is not yet available on Netflix.
| Directing | Tomohiko Yamashita | Director |
| Writing | Shotaro Ikenami | Original Story |
| Writing | Sumio Ōmori | Screenplay |
| Production | Tomoyuki Miyagawa | Executive Producer |
| Production | TAKURA Hironori | Producer |
| Production | Nagatomi Kotaro | Producer |
| Production | Kohei Adachi | Producer |
| Production | 秋永全徳 | Associate Producer |
| Camera | Shôji Ehara | Director of Photography |
| Lighting | Shohei Okuda | Gaffer |
| Sound | MATSUMOTO Satoru | Sound Recordist |
| Art | Tomoko Kurata | Production Design |
| Visual Effects | Katsuro Onoue | Senior Visual Effects Supervisor |
