Since the end of the war, the Japanese have gradually whitewashed what happened. Textbooks and history books have become written in a more passive way, and subjects like comfort women, treatment of POWs, and Unit 731 are often not mentioned at all.
At every anniversary of the dropping of the atomic bombs there are protests and speeches by right-wing nuts screaming that the use of atomic weapons and the following US military occupation were unjustified. And if you were a student nowadays reading Japanese history as it is written, you would likely agree.
But my grandfather fought in the Pacific during the war for the entire duration. He fought the Japanese on the Philippines, and was one of the handful who were evacuated with General MacArthur. He later participated in the battle of Manila, and was present at the signing of the surrender on the battleship Missouri. After 4 years of fighting, he was one of only two survivors of the original troop deployed to the Pacific.
Comfort women were also used after the war, but they were intended to serve the US occupation force so as to prevent US soldiers from fraternizing with ordinary Japanese women.
There are Japanese who are quite honest about what happened during the war, and I have seen fights break out at the yakuza-organized right-wing rallies. Ordinary Japanese suffered under the former government before and during the war, and expected worse things to come after the surrender. To their surprise, the change brought about after the war was good. When I meet older Japanese who experienced the war and post war years and tell them that I am an American, they often thank me.
But other Japanese are ashamed of their history, and prefer that it not be brought up. This is wrong, it denies the sacrifices, good and bad, of those
who fought and suffered, making them all for nothing. I'm rather ashamed of Nikon for canceling this exhibit.