High Quality Content by WIKIPEDIA articles! Yun Chung-Ok is a Korean scholar and activist whose investigations into Japanese war slavery during World War II led to the creation of The Korean Council for the Women Drafted for Military Slavery by Japan. Working with two other members of the group Korea Church Women United, Kim Hye Won and Kim Sin Sil, Yun created and conducted the "Military Sexual Slavery by Japan on-the-Spot Survey".