Ninja Boy Rantaro(1993)

Ninja Boy Rantaro follows three mischievous ninja apprentices—Rantarō, Shinbei, and Kirimaru—at Ninja Gakuen, a school where first-year students are called "Nintamas." While they're supposed to master the skills and discipline required of true ninjas, the trio would rather chase snacks, pocket money, and playtime than buckle down on their training. The series chronicles their comedic misadventures as they bumble through lessons, dodge their instructors, and learn that being a ninja is harder than it looks. Equal parts action and humor, Ninja Boy Rantaro captures the chaotic energy of three friends trying to have fun while barely staying one step ahead of trouble at ninja school.