The film explores themes of indigenous cultural preservation and historical injustice, centering on the quest for hidden Ainu gold in post-Russo-Japanese War Hokkaido. It highlights the struggles of the Ainu people and the trauma of war, championing mutual respect and the protection of heritage.

The film features casting that is traditional and consistent with its Japanese source material and setting. Its narrative respectfully integrates themes of indigenous culture and historical context, offering a subtle exploration of cultural impact without explicitly critiquing traditional identities.