If Japan won the war, Japan would control the education system in the empire. Japan would teach work ethics and transfer technology and innovation, SE Asia would be developed and rich now. The whole greater East Asia co prosperity sphere would be a super power, even more powerful than America now. People would use Japanese as a second language or first language, not English
Japan would transfer technology to these countries and the East Asia co prosperity sphere empire would be a super power in the world. SE Asia is lack of technology and innovation.