Karayuki-san was the name given to Japanese girls and women in the late 19th and early 20th centuries who were trafficked from poverty stricken agricultural prefectures in Japan to destinations in East Asia, Southeast Asia, Siberia (Russian Far East), Manchuria, and British India to serve as prostitutes and sexually serviced men from a variety of races, including Chinese, Europeans, native Southeast Asians, and others.
Karayuki-san (唐行きさん?, literally "Ms. Gone-to-China" but actually meaning "Ms. Gone Abroad") were Japanese women who traveled to or were trafficked to East Asia, Southeast Asia, Manchuria, Siberia and as far as San Francisco in the second half of the 19th century and the first half of the 20th century to work as prostitutes, courtesans and geisha. In the 19th and early 20th centuries, there was a network of Japanese prostitutes being trafficked across Asia, in countries such as China, Japan, Korea, Singapore and British India, in what was then known as the ’Yellow Slave Traffic’.
Many of the women who went overseas to work as karayuki-san were the daughters of poor farming or fishing families. The mediators, both male and female, who arranged for the women to go overseas would search for those of appropriate age in poor farming communities and pay their parents, telling them they were going overseas on public duty. The mediators would then make money by passing the girls on to people in the prostitution industry. With the money the mediators received, some would go on to set up their own overseas brothels.