His family business is a ninja clan?! And his mother is the head of the clan?! Suddenly, his life is targeted, and Itoki Sakure learns about the existence of ninjas. Itoki gets caught up in the conflict between Iga and Koga clans. During this struggle, he encounters his friend, Suzaku Ban. This tale portrays the growth and life of modern-day ninjas in a thrilling ninja action story!