Sugimoto Saichi, called "Immortal Saichi" for his incredible powers of survival, is panning for gold in the far north when he hears a story about buried treasure, hidden by a death row inmate. He decides to go after the treasure, but it will be a journey far longer and far more dangerous than he'd ever imagined...

Sugimoto is tortured by twin brothers Youhei and Kouhei Nikaidō. Shiraishi breaks into Sugimoto's cell and releases his bonds, allowing him to kill Youhei. He fakes a fatal injury using Youhei's intestines, and is able to escape and reunite with Asirpa. While hunting, Asirpa and Sugimoto come across the tracks of two men: Tanigaki and Tetsuzō Nihei, a famous bear hunter.

Shiraishi meets Ushiyama and Ienaga, who survived the explosion, but does not disclose this to Sugimoto. Sugimoto’s group encounter Inkarmat, a traveling Ainu fortune teller who Asirpa does not trust. Shiraishi takes Inkarmat to a horse race, where they win two races on Inkarmat’s predictions. Kiroranke meets old friends at the track, who ask him to ride a horse and throw the race at the behest of a yakuza boss. Shiraishi bets all his money on the last race, but it is won by Kiroranke, who defies the yakuza boss. In Barato, Ogata meets with Hijikata and joins his group.

Kiroranke's Group breaks out Sofia and her accomplices out of Akou Prison. After meeting Asirpa, Sofia shares her memories of Wilk with his daughter, who in her own stead remembers something very important...

Asirpa looks for a way to pass down Ainu culture to later generations.