Lee Yong-soo, one of South Korea's outspoken victims of Japan's wartime sexual slavery, requested to meet with President Moon Jae-in to discuss taking the slavery issue to the International Court of Justice(ICJ).

Lee made the request during a meeting with Foreign Minister Chung Eui-yong on Wednesday, to which Chung replied that he would do his best.

Stressing that filing the case at the ICJ must be reviewed with prudence, Chung vowed to seek ways to resolve the matter through communication with the victims.

Lee said it is Japan's apology, not money, that she wants, adding that those who have committed a crime must pay for what they have done.

Amid Tokyo lashing out against a recent South Korean court ruling that ordered the Japanese government to pay damages to 12 of the victims, Lee has called to settle the issue once and for all at the ICJ.

Lee also lambasted recent controversial claims by a Harvard law professor that the women were "voluntary prostitutes," and said the professor, J. Mark Ramseyer, should also face judgment at the ICJ and apologize.