The comedy doesn't build a narrative, it just keeps finding new angles to make you laugh at the same absurd premise. Every episode is a riff on "ninja girl wants your underwear" played through a different joke structure, from slapstick to deadpan to outright surrealism. The art style matches that randomness, shifting just enough to keep you off-balance. This is what happens when you let comedians make an anime instead of asking them to serve a plot.

Kaede is an ordinary schoolgirl studying for her exams when Shinobu, a ninja apprentice, sneaks into her room. Shinobu's own ninja exam, set by a lecherous yellow ball called Onsokumaru, requires her to steal a pair of Kaede's panties. Shinobu is hopeless at stealth, and Kaede catches her in the act, yet the botched theft turns into an unlikely friendship. Before long Kaede is pulled into Shinobu's world of partying ninjas, presided over by Onsokumaru, who claims to be the master of all ninjas. The comedy leans fully into the absurdity of its ninja premise.