Ishido Kazunari (played by Takehiro Hira) is based on Ishida Mitsunari, the brave samurai who dared to fight against Lord Tokugawa Ieyasu during the Battle of Sekigahara. Father Martin Alvito (played ...
However, tensions developed between Ieyasu and the Five Elders of the group and the Five Commissioners led by Ishida Mitsunari. This forms the basis of the conflict during which Shōgun takes place.