Kagemusha (1980)

Kagemusha is a historical drama set in 16th-century Japan. The film revolves around a doppelganger who is chosen to impersonate a samurai warlord in order to deceive his enemies. As the warlord's secret body-double, the doppelganger experiences the challenges of ruling and leading an army. The story explores themes of honor, loyalty, and the consequences of deception in a feudal Japan torn by war.