This book discuss the way Japan responded the uncertain political situation in Indonesia after September 30 Incident from various aspects: not only government but also media, Japanese community in Indonesia, Indonesian community in Japan, and Japan Communist Party. Also response by Dewi Sukarno was introduced. By analyzing the situation from all those aspects we could learn how intensively Japan was related to the political development of Indonesia those days. Kurasawa Aiko. Born in Osaka Japan in 1946. Completed doctor course (S3) both at Tokyo University and Cornell University. Acquired Ph.D. from Cornell on "Mobilization and Control: Social Change in Rural Java during 1942-1945." (in English) She got another Ph.D. from Tokyo University writing on Postwar Indonesia-Japan Relations (in Japanese). After teaching at Nagoya University and Keio University etc. for many years she retired in 2012. She lives 4 months in Jakarta and another 8 months in Tokyo every year.