This debate actually reminds me of a DBWI I wrote where the USSR and Japan switched places.Considering Japan TTL has retained its status as a Great Power, and didn't become a hypernationalist hellhole, most media TTL is likely going to very, very patriotic, conservative, and pro-militarist.
A lot of OTL Japanese media (Godzilla, Barefoot Gen, and the works of Hayao Miyazaki) has pacifist and antiwar themes, as a reflection of how the Japanese public grew hostile to war.
TTL Japanese media, however, will be a lot more celebratory of Japan's history of battle and struggle since Japanese nationalism didn't become a disaster.
Long story sort, I mentioned an alt. pop culture where lots of Anime focuses on the heroes defending traditions against a degenerate empire.