Tanutaro is a hot-tempered raccoon enmeshed in a generations-old feud between rival ninja clans inhabiting a contested mountain region. As one of three apprentices—alongside a cunning fox and a disciplined penguin—he trains under a seasoned mentor, honing stealth and combat skills. His impatience flares when a peculiar outsider joins their ranks, clashing with his rigid view of ninja tradition.

Embedded within a hierarchical academy system, he navigates brittle alliances and simmering rivalries, both within his trio and across opposing schools. While pride fuels his competitive streak, survival against encroaching enemies and internal betrayals forces uneasy teamwork. His interactions oscillate between sharp-tongued friction and grudging cooperation, revealing a loyalty to clan codes strained by shifting threats and his own impulsivity.