Portal:Budo Ninjutsu
Ninjutsu', commonly known as Budo Taijutsu, and Budo Ninjutsu - The martial art practised at Akban, probably originated in the practices of Japanese mountain dwelling warriors and monks and evolved into specific methods of fighting, non-detection and outdoor survival techniques. Those practices were influenced by Shugendo, the outside living tradition (修験道?).
There is no concrete evidence to suggest that the Ninjas of feudal Japan practised a distinct martial art called "Ninjutsu". Most likely they practised the relevant combat skills and had a generic name for each of the espionage or stealth techniques they used.
Practicable Ninjutsu
Ninjutsu in the common conception refers to the martial arts, practices and techniques that descended from the mythological ninja. The focus of practicable Ninjutsu is somehow different as techniques practiced in modern schools stem from a plethora of Koryu (古流?) and not singularly from Ninjutsu ryu.
Most sources cite the syllabus of the Takamazu den (高松伝?) as a main link to historical Ninjutsu, but Schools having some Ninjutsu curriculum are numerous. Some of the Ninjutsu schools tend to shift the name and connotation of Ninjutsu to other, more neutral names see: Ninpo (忍法?), Budo Taijutsu (武道体術?), Amaterasu (天照?) and Samurai jujitsu).
Ninjutsu derived schools are proliferating in the west and in Japan. Takamazu den schools or schools derived from other more modern sources have gained popularity from the ninja boom of the 1980's.

