Kagemusha: The Shadow Warrior 4K 1980

Japan, second half of the 16th century. Shingen, Takeda Shingen's younger brother, saves from death a petty thief condemned for execution who resembles the daimyo like two drops of water. The warlord opposes Oda Nobunaga and Tokugawa Ieyasu, all trying to capture Kyoto, so when Shingen is mortally wounded, he instructs his subordinates to conceal his death for three years so as not to demoralize his own troops or inspire his enemies. His double, the so-called kagemusha, enters the scene.