Shinobi no Ittoki follows the story of Ittoki Sakuraba, an ordinary high school student who discovers he is the heir to a long line of ninjas. As he navigates the complexities of his new life, Ittoki must balance his everyday existence with the responsibilities of his ninja heritage. This anime explores themes of identity, responsibility, and the clash between tradition and modernity, offering viewers a thrilling mix of action, drama, and intrigue.