Ninjutsu, sometimes used interchangeably with the term ninpō, is the martial art, strategy, and tactics of unconventional warfare and guerrilla warfare as well as the art of espionage purportedly practiced by the shinobi (commonly known outside of Japan as ninja). The feature of mudras and Sanskrit like writing in their casting refers to the magic of Horiki, being said to be fantastical powers gained in the sects of Mikkyo Buddhism through intensive meditation, and are said to be one curriculum in Ninjutsu said to be responsible for their mythical powers.
Usage See Special:Whatlinkshere/Etymology:Ninjutsu for a list of articles using this term. This is an etymology page: a page detailing the origins of terminology used in the series in regards to real world culture and history.