[1/3]Pictures of the Japanese imperial family are displayed on a blackboard in a classroom at Tsukamoto kindergarten in Osaka, Japan, November 30, 2016. REUTERS/Ha Kwiyeon Acquire Licensing Rights TOKYO (Reuters) - At first glance, the Tsukamoto kindergarten looks like any other school in Japan, but its unique curriculum is reminiscent of pre-war Japan. The private school, which has been visited b