Koga school that fought against the Muromachi bakufu (Japanese feudal government headed by a shogun) and Iga school that was famous for Hanzo HATTORI, who was a retainer of Ieyasu TOKUGAWA are well known.
室町幕府と戦った甲賀流や、徳川家康の家来服部半蔵の伊賀流が有名である。