 "Tozama" applied to a "daimyō" who was considered an "outsider" by successive "Shōguns", Emperors, and "shikkens" (執権) that ruled over Japan at any given time.Typically, a "tozama" had a loose or indirect relationship with the current ruler, and this definition remained intact during the subsequent Ashikaga Shogunate (足利幕府, 1336–1573, also known as the Muromachi (室町幕府)), and the Sengoku period (戦国時代, 1467-1615, "Age of Warring States").The establishment of the Tokugawa Shogunate in 1600 redefined "tozama daimyō" as the "daimyō" who submitted as vassals to the Tokugawa only after the decisive Battle of Sekigahara, including those who fought for the Tokugawa at the battle but were not official vassals.