The real problem in Japan is the book that says Nanjing Massacre didn't happen are still widely accepted and even sell well. They outsell the books written by serious historians who state the issue based on historical facts. Today's Japanese young people are ignorant of Japanese war crimes. School textbooks downplay the facts and high school students never study Japanese history after 19th century unless it is required for college entrance exams. It is just like how Japanese are told nuclear power plant is perfectly safe. Japanese government didn't admit the war crime until 1995 when then Prime Minister Tomiichi Murayama did accept the Japanese atrocities during second world war.