This is a world where ninjas are still active on the stage. However, unlike in the past, today's ninjas mostly work for wealthy people and politicians, helping them do some shameful things. Such ninjas who have lost their faith are called evil ninjas. In order to fight against the growing evil ninja forces, the government established Hanzo Academy as a place to cultivate good ninjas. The innocent and lively Homura (voiced by Kitamura Eri), the poor but extremely strong-willed Eita (voiced by Meino Ai), the taciturn Hinakage (voiced by Shiraishi Ryoko) who does not show any emotion, the Mirai (voiced by Goto Saori) who looks like a child but actually cares a lot about her figure, and the dark and cunning Haruka (voiced by Toyoguchi Megumi) who is actually full of maternal brilliance. At school, these five girls met