http://www.awf.or.jp/e1/korea.html
During the Sino-Japanese war Korean women with Japanese women were sent to comfort stations which the Japanese military set up in various places of occupied China. As the war expanded into the Pacific-Southeast Asian region, many Korean women were sent there too.
It appears that first prostitutes were recruited from Korea to go to comfort stations abroad. Later daughters of poor families were recruited by various means. It is known that frauds in the name of good jobs began to be practiced from this time. There are testimonies that girls were recruited against their own will by coaxing and intimidating. From Korea girls under 21 years old were taken to comfort stations, which was prohibited in Japan. Among them there were even girls who were 16 or 17 years old.
CCH-Animation Degree 