This is a 15-minute heist show that knows exactly what it is: a vehicle for absurdist gags, not a plot you're supposed to take seriously. Sorata announces his thefts like a gentleman thief out of politeness, then the police still fail to stop him anyway, and the three assistants in their various states of undress cause more chaos than they prevent. The show doesn't care about narrative momentum or character arcs. It cares about the next weird joke, the next excuse to derail the heist entirely, and whether you find that kind of controlled chaos funny enough to stick around for all twelve episodes back-to-back.

Sorata Muon works as a teacher while carrying on a family tradition centuries in the making: he is Mouse, a master thief who can steal anything. He always warns the authorities before a job, so the police are waiting on the scene, yet they still fail to stop him. Three shapely female assistants help him, all hiding behind teaching jobs of their own and favoring tight, skimpy outfits. They chase Sorata far more eagerly than he chases them, though he does give them some attention. The law is not his only pursuer. A secret society devoted to protecting art has enlisted one of Sorata's former allies to catch him. The adventure comedy plays out in short fifteen-minute episodes with plenty of ecchi humor.