Shadow Warrior Tokugawa Ieyasu S01 E06 Tadateru Reunites the Army - The Ambition of Choan Okubo

The drama, based on a novel by Keiichiro Ryu, tells an alternative history in which the historical shogun Tokugawa Ieyasu is killed at the Battle of Sekigahara and his double Jirosaburo Serada becomes the ruler of the country instead.