Representatives of civilian groups for women from the two Koreas pressed Japan on Saturday to resolve a long-running grievance regarding Korean women forced to serve as sexual slaves during World War II, giving a united voice on the issue despite tension over the North's nuclear and missile program. The calls were made at a forum on Japan's wartime sexual slavery in China's northeastern city of Shenyang. It was the first time in seven years that North Korea's representatives attended the annual forum.