South Korea, the United States and Japan are reportedly fine-tuning the details of a three-way summit to be held alongside the G20 next month in Germany.
It would be the first meeting of its kind under the new governments in Seoul and Washington.
According to Japan's Yomiuri Shimbun, citing a Japanese government source, the three sides are expected to discuss the subject of North Korea, and reconfirm their united stance on stopping the regime's weapons programs.
The paper also reports that they're likely to exchange views on the 2015 agreement between South Korea and Japan on Tokyo's sexual enslavement of Korean women during World War Two.
The issue of the so-called "comfort women" remains a sore subject between Seoul and Tokyo, with the new Moon administration in South Korea opposing the deal.