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 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.
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
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.
