Shinobu is a naive ninja-in-training under the perverse tutelage of her headmaster: a strange, yellow, spherically pudgy creature named Onsokumaru. In order to test her ninja abilities, Shinobu must steal the panties of all the girls in her high school. The first house she stops at is the abode of Kaede Shiranui, who happens to catch Shinobu in the act. Kaeda is a voice of reason, and the two girls become quick friends, despite Onsokumaru's continuous attempts to get in the way of their friendship. Ninja Nonsense’s explosive insanity, paired with the humor of South Park, makes it one of the craziest-most-hilarious anime shows ever created.