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What is a Ninja?

Because ninja rarely left anything in writing or boasted of their achievements, the history of the ninja is mostly apocryphal and blatantly legendary, so the great majority of stories circulating about them are difficult to prove.Historical examples of ninja are said to include Minamoto no Yoshitsune, who employed surprise as a major weapon in his victories. He is said in a popular folktale to have been educated by a tengu to learn tactics and became a ninja.One of the earliest roots of ninja, Togakure Ry, reportedly originated in the late Heian Period. Iga and Kga are two of the most famous ninja styles, and are often pitted against each other in fiction. Some also say that they were allies and worked together in mutual defense pacts. Both of these claim that they originated in the Heian period.Only a few records remain from the Kamakura period. Kusunoki Masashige used tactics against enemies that remotely resemble ninja tactics. From the Muromachi period there are even fewer records. Both of these times were generally peaceful, and many battles had tournament-like aspects that prevented surprise attacks. Somewhere in these time periods, bushido began to form as the proper and honorable way a samurai must follow. It would be well into the Edo period that bushido was finally formalized.In the Sengoku Period, also known as the Warring States period, ninja supposedly flourished. Almost all famous daimy are said by modern ninja schools to have had ninja, or a ninja-like group under his control and they served as eyes and ears. Some daimy were reportedly ninja themselves. The clan of Sanada, the most famous member being Sanada Yukimura, was reportedly a ninja clan. This is attributed to the successful defense of their castle with approximately 3,000 soldiers against an overwhelming force of 50,000 led by Tokugawa Hidetada. Their tactics, which are said to have included splitting their house in two, one each supporting Toyotomi and Tokugawa in order to survive no matter which side finally won, has been the subject of much legendary discussion. Later, they would come to be called Sanada J Yushi, lit. Ten heroes under Sanada, in tales where they used ninja skills to defeat everything but their jealous wives (who were, of course, ninja themselves).Tokugawa Ieyasu was claimed to have used ninja, controlling both Iga and Koga in unifying Japan and ultimately rising to the rank of Shogun. In his dramatic escape through the mountainous landscape of Nara after Oda's assassination, Iga ninja led by Hattori Hanz allegedly helped Ieyasu escape, gaining his favor. The last battle where ninja reportedly fought is in the Siege of Shimabara under the Tokugawa shogunate. As the shogunate became stable, ninja were effectively unemployed. Some were said to have become Oniwabansh, a semi-secret group of bodyguards and intelligence officers who worked tending gardens of the Edo castle and eavesdropping on the daimy. A purported ninja master Fujibayashi Sabuji wrote Bansenshukai () as a collection of ninja knowledge. Yet the stories go that most knowledge was still passed on through oral tradition and training, as most ninja believed that their services would soon be needed again. The peace of the Edo period continued for over 200 years.In the Edo period, ninja became popular heroes in books and plays. Many mythical ninja powers such as becoming invisible, jumping over tall fences, casting spells and calling up a giant toad larger than a human were all invented in these fictitious accounts of ninja. Ninja did not correct these misconceptions and some may have even written these stories themselves to increase their value should their services be needed. One of the lesser known contributions made by ninja is their involvement in furthering the research of fireworks as a result of their development of pyrotechnic weaponry.Few traces of Ninjutsu remain in Japan today, such as the Koka-ryu Ninjutsu Yashiki (Koka-ruy Nijutsu Palace) in Shiga, near Kyoto, which is mostly geared toward children, the Togakushi Chibikko Ninja-Mura (Kid's Togakushi Ninja-village), which is little more than an amusment park, and the The Iga-ryu Ninja Museum, which features the most comprehensive understanding of Ninjutsu.