S1, E2: Bakufu, the famous Ninja master, literally drops out of sky (hence the hole in the school's roof) and offers to teach at Shuriken School. The Principal doesn't dare refuse, but Bakufu's fee is exorbitant. While the Principal attempts to come up with moneymaking schemes, a mysterious thief starts stealing things from the students! Eizan, Jimmy and Okuni investigate. Their prime suspect is Bakufu, because these incidents surprisingly coincide with his appearance at the school ...