Ittoki Sakuraba, an ordinary teenager, suddenly discovers his life is in danger due to his connection to a secret world.
He learns he's the heir to a powerful ninja clan, the Iga, and a rival clan, the Koga, wants him dead.
To protect himself and learn to control his destiny, Ittoki must enroll in a ninja academy and master the skills necessary to survive.
He'll have to navigate the dangers of this hidden world while figuring out who he can trust and how to protect those he cares about.