Ninpo represents a complex martial and spiritual discipline, converged into a unconventional life philosophy based on the concept of preserving the human life integrity, both phisical and mental. This way of life relies on a continuous training and preparation, adapted to one's needs, in order to be able to successfuly face any difficulty. If Ninpo refers to the art in its own complexity, both martial and spiritual, then Ninjutsu represents the effective unarmed and weapon martial techniques (from several old japanese schools - ryu-ha), including various methods of fighting, leaping, hiding, walking and running methods, as well as sword evading techniques, and special utilization of the body.

The arsenal of weapons includes a wide range of conventional weapons such as Tachi (katana), Yari (spear), Roku-Shaku-Bo (6 feet staff), and also unconventional weapons such as Shuko, Kusari fundo, Shurikens, and concealed weapons.

A fundamental aspect of Ninjutsu was represented by the methods of infiltration into enemy's territory, to gather information, to cause disorder, to disseminate false information, or simply to assassinate the enemy's leaders in order to facilitate a victory. As explained in Bansenshukai, a 17th century document wrote by Fujibayashi Sabuji, with sections on special weapons, history, philosophy, astronomy, topography and more, such stealth and spying techniques were part the base training that made ninja warriors so famous.