Letters from Iwo Jima opts for realism, focusing on historical detail and authentic character development rather than shoehorning identity politics or modern ideology into the narrative. None of the characters are inserted for the sake of representation; instead, individuals are depicted based on their roles and personalities within the story's context.

The film treats themes of duty, honor, family, and nationalism seriously, reflecting values important in both Japanese and broader human contexts. There's no effort to mock or subvert traditional masculinity or cultural touchstones; if anything, the approach feels almost reverential.

There’s no overt ideology being pushed here, and the film offers nuanced portrayals of characters on all sides, steering clear of simple good-evil binaries or caricaturing traditional perspectives. It’s about the complexities of war and humanity, not preaching any modern moral lessons.