Official records suggest that up to an estimated 450,000 girls and women were forced into service as “comfort women,” but the actual number may have been much higher as many comfort women died or were killed on the front lines while survivors felt too ashamed or guilty to come forward after the war.
Here’s some information about comfort women:
https://www.nytimes.com/2014/11/15/opinion/comfort-women-and-japans-war-on-truth.html
www.dw.com/en/former-comfort-woman-tells-uncomforting-story/a-17060384
https://www.history.com/news/comfort-women-japan-military-brothels-korea
https://www.thoughtco.com/world-war-ii-comfort-women-3530682
