Hwang Byoung-joo  The author's interest lies in the modern transformation of Korea and he conducts relevant studies. He is currently involved in the project related to the war crimes of the Japanese military against ‘comfort women’ at the National Institute of Korean History.  

The data that exists on the Japanese Military ‘Comfort Women’ is classified into several categories. First of all, we have the data produced by the Japanese military, which acted as the principal for the organization and operation of the comfort stations. It is the most accurate data as it was created by the directly involved parties. A considerable amount of data has been unearthed that describes the installation and operation of the comfort stations, allowing us to fully grasp the harsh reality and identify the complete responsibility of the Japanese military. However, a large amount of the data created by the Japanese military have since vanished due to the organized destruction of the pertinent materials, which has made it intrinsically difficult to bring the remaining data to light owing to various circumstances.