I mean, I was using Tales from Iwo Jima as an example, not it's ITTL equilavent but a look at films and media made about the war, either during or after it, is something I think for WWII is something that should be brought in more often as it helps provide another perspective alongside the ground level & the political and above perspectives. Since looking at how media sees such things help us know how the cultural paradigm of the people that produce said media is located at.
For instance, a film like Grave of the Fireflies, with it's narrative of how two children were so utterly fucked by the war that they starved to death, won't be produced ITTL Japan. Since it was based on a semi-autographical short story written by the author who did lose his little sister due to malnutrishion (and suffered survivor's guilt since his author avatar also died in the story). Whereas here Japan itself is as generally untouched by the war as the United States was/is by WWII. Sending plenty of soldiers but suffering no attacks or effects on the homefront. Also they are on the winning side of WWII.
The tropes and clichés of Japanese media will be widely different compared to OTL as well I imagine. After all, I doubt there will be nearly as strong a pacifistic movement ITTL Japan without the wreckage and trauma that came from the last decade and a half of Imperial Japan.
Or, as I stated previously, the popular media produced ITTL is something I'm interested in as it helps show how the different cultural mores, trends and perspectives that would exist ITTL, as the different historical and social trends would produce different media.