Kansuke Yamamoto is a samurai who dreams of a country united, peaceful from sea to sea. He enters the service of Takeda, the lord of Kai domain. He convinces Takeda to kill the lord of neighboring Suwa and take his wife as a concubine. He then convinces the widow, Princess Yu, to accept this arrangement and to bear Takeda a son. He pledges them his life. He then spends years using treachery, poetic sensibility, military and political strategy to expand Takeda's realm, advance the claim of Yu's son as the heir, and prepare for an ultimate battle with the forces of Echigo. Has Kansuke overreached? Are his dreams, blinded by love, too big?
Unfortunately the movie Samurai Banners is not yet available on HBO Max.
| Directing | Hiroshi Inagaki | Director |
| Art | Hiroshi Ueda | Art Direction |
| Camera | Kazuo Yamada | Director of Photography |
| Writing | Yasushi Inoue | Novel |
| Editing | Yoshihiro Araki | Editor |
| Production | Tomoyuki Tanaka | Producer |
| Sound | Masaru Satō | Original Music Composer |
| Production | Hiroshi Inagaki | Producer |
| Writing | Shinobu Hashimoto | Screenplay |
| Writing | Takeo Kunihiro | Screenplay |
| Production | Toshirō Mifune | Producer |
