[1] The history and mythology surrounding ninjutsu and kayakujutsu are similar to the history of chemistry and the mythology surrounding alchemy.
Thus kayakujutsu mysticism refers to elements like the Earth (Chi) to develop Fire (Kaji) just as alchemy referred to elements just as air, earth, fire and water.
[2] This article related to the martial arts is a stub.
You can help Wikipedia by expanding it.This Japanese history–related article is a stub.
You can help Wikipedia by expanding it.This firearms-related article is a stub.