Tajibee, a cockfighting expert from Kawachi, and Kitahachi, a carpenter from Edo, survive a shipwreck near Beppu. They rescue Sakamoto Ryoma from masked samurai, and he entrusts them with a secret letter for Saigo Takamori of Satsuma. A shogunate spy, Chizou, overhears and pursues them. Along the way, a pickpocket named Okoma steals their wallet and the letter. When they finally deliver the letter in Satsuma, they realize it was a decoy to mislead the enemy.
Unfortunately the movie The Buddy: Yaji and Kita is not yet available on HBO Max.
| Writing | Tsunehisa Ito | Screenplay |
| Writing | Akira Murao | Screenplay |
| Directing | Yuji Makiguchi | Director |
| Directing | Sumio Yamada | Assistant Director |
| Production | Katsuhiko Takei | Producer |
| Writing | Yasunori Kawauchi | Original Story |
