Okay, kiddo, so you know how in school you learn about history and stuff like that, right? Well, in Japan, they have these books called "textbooks" that tell people about their country's history.
But some people in Japan are not happy with how these textbooks are written. They think that they don't tell the whole story about Japan's past and they leave out some important facts. So they formed a group called the Japanese Society for History Textbook Reform.
This group wants to change the textbooks so that they tell a more accurate and complete version of Japan's history. They want people to know the truth about what really happened in the past, even if it isn't always flattering to Japan.
But not everyone agrees with them. Some people think that the current textbooks are fine the way they are and they don't want anything to change. They might be afraid that changing the textbooks will make Japan look bad or that it will hurt their national pride.
So, basically, this group wants to make sure that Japanese people learn the whole truth about their country's history, while others think that the current textbooks are good enough. It's like when we argue about which game to play or what movie to watch, but it's about history books instead.