Ninja Nonsense

Shinobu is a young, inexperienced ninja apprentice. To prove her skills, she's given the unusual task of stealing underwear from every girl in her high school. Her first target is Kaede Shiranui, but Shinobu gets caught in the act. Surprisingly, Kaede-the more levelheaded of the two-doesn't hold it against her, and they soon become fast friends. Their budding friendship is occasionally disrupted by a strange, round yellow creature that insists it's a ninja master.