Nobody knows this exists. A rabbit eats a banana, becomes a monkey, and somehow that's enough, no stakes, no arc, just a character doing the thing that makes him himself over four perfect little episodes. It's pure mascot logic, the kind of show that doesn't need to justify why anything happens because the joy is in the transformation itself, not the reason behind it. If you've ever watched something so fundamentally unconcerned with narrative that it loops back around to being exactly what it needed to be, you've found your comfort watch.

Usaru-san is a set of four specials from 2009 built around a Media Factory mascot character. The hero is a male rabbit who turns into Usaru-san when he puts on a monkey suit and eats bananas. His name blends two Japanese words, usagi for rabbit and saru for monkey.