Two elderly South Korean women abused by Japan's wartime military-run brothel system are in Japan to reject the recent settlement agreement between the two governments.
They are also demanding that Prime Minister Shinzo Abe give them a face-to-face apology and formal compensation.
Lee Ok-sun, 88, and Kang Il-chul, 87, told reporters on Tuesday that the agreement neglected the victims' feelings and was "wrong".
The December agreement included an indirect apology from Abe and Tokyo's pledge of Y1 billion ($A12.09 million) fund for the South Korean victims.
The two women are among tens of thousands of Asian "comfort women" sexually abused in Japan's military-run brothel system during the World War II.
The Japanese government set up a fund in 1995 but that was not seen as sincere by some, especially in South Korea.