What really distinguishes Bujinkan budo from other martial arts?
One thing is that as a comprehensive or total life-protection system, it does not specialize in particular kinds of applications as many arts do. That is, it does not emphasize primarily grappling and throwing as in judo; striking and kicking as in karate; or any particular weapon as in kendo. Everything is used freely, including unconventional weapons; unconventional applications of common weapons; and concealed weapons. This is one aspect of the Bujinkans happo bikenjutsu or secret sword methods.