Ninja Nonsense: The Legend of Shinobu is a 2004 anime series based on the manga by Ryoichi Koga and animated by Ufotable. It premiered on July 8, 2004 and ended on September 23, 2004.
Synopsis
Shinobu is a naive ninja-in-training. In order to test her ninja abilities, she must steal the panties of all the high school girls. The first house she stops at is the abode of one Kaede Shiranui, who happens to catch Shinobu in the act. Kaede is the voice of reason and the two girls become quick friends, despite a round yellow ball-thing who claims to be a ninja master and tries to get in the way of their friendship.