Hirofumi Hayashi  Hayashi graduated from the University of Tokyo in 1979, and then obtained master's degree from Hitotsubashi University. In 1985, he was accepted as a full-time lecturer in the College of Economics at the Kanto Gakuin University, became an assistant professor, and was granted his current position as professor in 1999. Over the course of his career Hayashi has researched Japanese history during World War II. He has researched the Sook Ching massacres in Singapore, discovered that US war crimes trials began on Guam before the Japanese surrender in 1945. When consulted on school textbooks, he criticised the Textbook Authorization Council for distorting passages from his 2001 book "The Battle of Okinawa". He argued that Okinawa residents' mass suicides were effectively under the control of the Japanese military, even if no direct orders were given. Hayashi has discovered documentary proof of Japanese military's wide and common involvement in the forced sexual slavery of the comfort women on Java in Indonesia, in Lansong Province in Vietnam, and in Guilin City in China. On Feb 25, 2014 Hayashi said, "The claims to inspect the credibility of the testimony made by these comfort women are intended to deny the whole existence of the comfort women itself". On April 7, 2014 Hayashi found the evidence of the forced sexual slavery on Bali in Indonesia.