Ekashi, an elderly Ainu man, resides in a village near Otaru. He commands deep respect as a village elder and living repository of Ainu cultural knowledge, traditions, and spiritual practices. His long white beard and traditional attire reflect both his age and profound connection to the natural world.

His primary role involves guiding younger generations, particularly Kira Heijirō. Ekashi patiently teaches the Ainu way of life—language, customs, spiritual beliefs centered on Kamuy (deities inhabiting all things), and practical skills like hunting, fishing, and crafting. He emphasizes respect for all living beings and humanity’s interconnectedness with the environment.

Calm, patient, and deeply wise, Ekashi observes situations thoughtfully before offering counsel. Though gentle, he displays firmness when defending principles or traditions, revealing quiet strength and unwavering commitment to preserving Ainu heritage. He mediates village disputes and bridges the Ainu community with encroaching modern Japanese society, engaging figures like Heijirō and government officials.

Rooted in a lifetime within the Ainu community, Ekashi endured historical pressures, discrimination, and Meiji-era assimilation policies. This experience fuels his determination to ensure Ainu culture survives. He carries his people’s history and the weight of being a cultural guardian.

Throughout the narrative, Ekashi serves as Heijirō’s cultural teacher and spiritual guide. He observes Heijirō’s journey of integration, offering support, correction, and philosophical insights. Ekashi’s resilience against cultural erosion and hope for the future emerge through interactions, especially while teaching Heijirō and other youth. He embodies the enduring spirit and wisdom of Ainu elders.