The season shifts focus toward . While Sugimoto remains obsessed with protecting her from the "curse" of the gold, Asirpa realizes she must use the treasure to preserve Ainu culture. This creates a subtle rift: Sugimoto wants her to live a peaceful life, but Asirpa is determined to be a "powerful shield" and leader for her people.
A major new player, Botaro the Pirate (Oosawa Fusatarou), joins the hunt. He dreams of using the gold to build his own kingdom and provides Asirpa with a vital clue—an Ainu gold coin—that changes her perspective on her father, Wilk.
The crew encounters Sekiya Waichirou , a deadly convict who uses poisons to "test people's luck." He kidnaps Hijikata and poisons Ushiyama, leading to a tense showdown involving Kadokura's legendary bad luck.
Flashbacks dive deep into the origins of Tsurumi's loyalists, particularly Usami and Koito , revealing how Tsurumi manipulated their devotion through "love" rather than just duty. Emotional Core & Conflict
Sugimoto and Asirpa cross the Russian border back into Japan, navigating frozen landscapes and escaping Tsurumi’s naval pursuit across ice floes.
The fourth season of Golden Kamuy picks up immediately after the high-stakes reunion of and Asirpa in Karafuto. Following the death of Kiroranke, the duo escapes back toward Hokkaido while being pursued by First Lieutenant Tsurumi's 7th Division . Key Story Arcs
