It classifies jutsu by rank (E to S) and type (Ninjutsu, Taijutsu, Genjutsu).
The , titled Hiden: Tō no Sho
For decades, the world of Naruto has captivated fans with its intricate power systems, emotional backstories, and explosive battles. While the manga by Masashi Kishimoto provides the primary story, the true nuts and bolts of the universe are hidden within the official supplemental guides, known as the Hiden (Secret/Data) books. naruto databook 2