The art of the Ninja, the legendary shadow warriors of Japan, is the primary focus of the International Genbukan Ninpo Bugei organization headed by Grandmaster Shoto Tanemura Sensei of Matsubishi Japan. In the interests of maintaining the integrity of the ancient Ninja tradition, Grandmaster Tanemura Shoto Sensei founded the Genbukan in November of 1984. The Genbukan is dedicated to the factual portrayal and teaching of the Ninja arts in the traditional Japanese manner.