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.
A troublemaking spirit named Chinkoroheibei sets his sights on the underwater palace of the fish king, convinced that the royal treasure box contains riches beyond imagination. What should be a simple heist spirals into chaos when Chinkoroheibei discovers the aquatic realm operates by completely different rules than the surface world. The fish king and his court aren't about to let some cocky intruder waltz away with their prized possession, and what follows is a battle of wits and slapstick mishaps as Chinkoroheibei fumbles his way through an alien environment where logic bends and nothing works quite as expected. The film revels in absurdist humor and fantastical creature designs, embracing the ridiculousness of its premise rather than playing it straight. If you're drawn to comedy that doesn't take itself seriously, that finds joy in physical gags and weird character interactions, and that treats the impossible as everyday, this delivers exactly that energy. The underwater setting becomes a character unto itself, full of visual gags waiting around every corner.