Sub Power-Intuitive Ninjutsu The ability to intuitively use Ninjutsu, the historic style of martial arts, tactics, strategy, and espionage of unconventional and guerrilla warfare. Its users are respectively called Ninja. Contrary to popular culture, real life ninja were mainly spies, saboteurs, and assassins that rarely appeared in the battlefield. Depending on the school and source ninjutsu focuses on different disciplines, the most common of which was the eighteen disciplines of the Bujinkan. The user is operates in the darkness and the shadows, assassinating in secret.