A kid with a fishing rod and zero magical talent walks into an empire collapsing under a tyrant's boot and decides he's going to seal every immortal hermit keeping it broken. The show treats this impossible task with complete sincerity, building a ragtag fellowship that actually feels like people choosing to fight something bigger than themselves. Bunchuu represents the tragedy on the other side, a loyal soldier to a dying system, making this not about good versus evil but about what you're willing to destroy to build something new.

The Yin Dynasty crumbles under Dakki's tyrannical reign, her supernatural powers grinding the kingdom into suffering and chaos. The Hermit Band responds by launching the Houshin Plan: a sweeping operation to identify, capture, and seal away all evil immortals corrupting the realm. They assign this monumental task to Taikoubou, a young apprentice hermit, who must assemble a team of allies, hunt down dangerous supernatural beings across the land, and work toward founding a new kingdom. Standing in his way is Bunchuu, the kingdom's most formidable immortal warrior and a loyal servant of Yin's royal court. Committed to preserving the old order, Bunchuu throws all his strength against Taikoubou's mission, setting the stage for a deadly clash between hermits of enormous power in a fantasy adventure drawn from legendary China.