According to Japanese history textbooks, it is difficult to understand who and how used nuclear weapons, the country is depersonalized, Japanese youth perceives atomic bombing as an inevitable evil, many believe that atomic bombing is the work of the USSR. The theme of World War II is practically ignored and not studied.

Something suggests that your knowledge of Japanese school textbooks dates back to several patriotic sites and forums that post each other the same stuff.

Several years ago, the Japanese removed from the program the description of the atrocities of the Japanese military in the occupied territories. This caused a lot of protests. Even in Japan, this cannot be hidden from children.
The theme of World War II, if so, is about us. And it is replaced by the theme of the Great Patriotic, and with a colorful description of heroism and without consideration of those issues that can have more than one interpretation. And it is our graduates have no idea that the World War is not just a war between two countries in Europe.