A chronicle of the life of Yasui Santetsu, a 17th century master of go who turned his attention to astronomy and created a new calendar for Japan. Based on the life of Santetsu Yasui (December 27, 1639-November 1, 1715), appointed as the first official astronomer in the Edo Period and would go on to create the Jokyo calendar at the imperial request.
Unfortunately the movie Tenchi: The Samurai Astronomer is not yet available on HBO Max.
| Production | Kazutaka Akimoto | Producer |
| Writing | Masato Katō | Writer |
| Production | Tamotsu Shiina | Producer |
| Directing | Yojiro Takita | Director |
| Camera | Takeshi Hamada | Director of Photography |
| Editing | Soichi Ueno | Editor |
| Sound | Joe Hisaishi | Original Music Composer |
| Art | Kyōko Heya | Production Design |
| Writing | Tow Ubukata | Novel |
| Production | Arimasa Okada | Producer |
| Directing | Mizuho Kudô | Script Supervisor |
| Production | Fumio Inoue | Producer |
| Production | Shinichirou Inoue | Producer |
| Production | Julie K. Fujishima | Producer |
| Lighting | Kiyohito Ando | Gaffer |
| Writing | Yojiro Takita | Screenplay |
| Visual Effects | Makoto Chiba | Visual Effects Supervisor |
| Production | Toshihisa Watai | Producer |
| Production | Kei Kawamura | Casting |
| Production | Nozomu Enoki | Producer |
