Fans of Golden Kamuy have a new reason to celebrate. The franchise’s first official spinoff novel has been announced, and it will come bundled with a completely new anime episode, set to release exclusively on Blu-ray. This release offers both longtime fans and new viewers an opportunity to dive deeper into the richly layered world of Golden Kamuy.

Story Synopsis
Set against the harsh backdrop of early 20th-century Hokkaido, Golden Kamuy follows the quest for a hidden stash of Ainu gold. Former soldier Saichi Sugimoto, known as “Immortal Sugimoto,” teams up with a young Ainu girl named Asirpa as they navigate brutal environments, rival treasure hunters, and political conspiracies.
The new spinoff novel will explore untold side stories within this world, offering deeper insights into supporting characters and previously unseen events. The bundled anime episode will adapt portions of this new material, giving fans a rare chance to experience fresh animated content connected to the beloved series.
Production Details
- Franchise: Golden Kamuy
- Spinoff Novel: First official novel side story in the franchise
- Anime Episode: New exclusive adaptation bundled on Blu-ray
- Blu-ray Release Date: Yet to be announced
- Studio: Unconfirmed (but likely returning staff from previous seasons)
Character Summaries
Saichi Sugimoto
A battle-hardened survivor of the Russo-Japanese War, known for his resilience and tenacity. His nickname “Immortal Sugimoto” reflects his uncanny ability to survive against overwhelming odds. Driven by a promise to help a fallen comrade’s widow, he becomes entangled in the dangerous hunt for Ainu gold.
Asirpa
A young Ainu huntress with extensive survival knowledge, Asirpa partners with Sugimoto on the treasure hunt. She provides cultural expertise, practical skills, and emotional balance to the pair’s perilous journey, while also seeking justice for her father.
Bonus Section: Trivia & Highlights
- Did You Know? This marks the first time Golden Kamuy has officially expanded its lore via novel format.
- The franchise has previously adapted four anime seasons and a live-action film.
- The spinoff novel may explore characters whose backstories were only briefly touched upon in the main series.
- The Blu-ray exclusive anime episode allows for deeper world-building not covered in the regular TV seasons.
As the Golden Kamuy universe continues to grow, this spinoff novel and its exclusive anime episode promise to enrich the series’ complex history and vibrant character roster. More details on the release are expected soon.