This essay works under the assumption that the post-war order has been a new continuation of colonialism, so that it calls for critical examination of relationship between colonialism and academic production of the so-called Tropic Sciences in the Southern Island controlled by Japan over the thirty years of their military occupation in 1914 to the defeat in the World War IL In the end, this ”scientific” construction of ”the island people” will be linked historically with the ”Greater East Asla Co-prosperity Sphere” project.