My Stupid Sword - S1.E20

Yang is thrilled that the CPK (Chung Pow Kitties; a pastiche of Hello Kitty and Powerpuff Girls), a rock band made of cats with mad ninja skills in town. Not only that, but they also appear on Broadway and are looking for a new member. Having a sharp sword is a requirement. Yang's bamboo sword isn't sharp enough, but Master Yo refuses to give Yang a new sword. Yang plots to steal weapons from the Forbidden Armory to try to make the cut.