When I began visiting Japan in the late 80's, the #1 best selling book was a rewrite of WWII ending in a glorious Japanese victory. Most Japanese have no grasp of what happened in China, Korea, the Philippines or in any of the prisoner of war camps. I found it all shocking.
I lived there 1951-1961.
Traveled Seattle-Yokohama and back via MSTS (the Army’s Navy.)
Much is said about the internment of Japanese civlians in the US during WW2, but the treatment of civilian Americans in the Philippine interment camps were brutal. It’s not talked about much today.
In 60s, 70s, Japanese public opinion was quite left leaning, pro-China, pro-North Korea, self loathing. There were several far left radical groups, including the Japanese red army.
They turned right in 80s, due to Regean’s cold war policy, America urged Japan to spend more on defense.