Nobody talks about this one. Chinkoroheibei moves at the speed of mischief itself, patient, digressive, finding comedy in the smallest gesture rather than spectacle. The underwater kingdom feels lived-in and strange without needing to prove it, and the theft plot is really just an excuse to watch a character navigate a world that operates by its own dream logic. It's a film that trusts silence and observation the way modern animation forgot how to. The kind of thing you stumble on and suddenly understand why certain people guard it like a secret.

Chinkoroheibei, a troublemaker, travels down to the undersea domain ruled by the king of the fish and attempts to make off with the ruler's treasure box. One description of the film tells of a fisherman who saves a lovely mermaid and follows her beneath the ocean to an enchanted kingdom, a setup taken from the folk tale of Urashima Tarou. The result is a comedic fantasy movie built on that old story.