Looking back almost 1,000 years, the mists of Japan's chaotic past shroud the development of a way of life, an ancient struggle waged against fierce feudal lords who ruled the island nation with swords of steel and a code of death before dishonor. The people of the mountainous regions of what is now Iga prefecture wanted to live in peace, but their lords had other plans-so the people learned the martial arts of self-defense and used their meager farm tools as weapons against the samurai blades of their oppressors. Nine traditions of the ninja arts grew out of this seemingly endless struggle,...