The Japanese Prime Minister and South Korean President are holding talks in Tokyo. Kishida Fumio and Yoon Suk-yeol are hoping to improve strained relations between the countries, as North Korea speeds up its nuclear and missile development.
Yoon is the first South Korean president to visit Japan in 12 years - excluding international gatherings.
The two-day trip was announced after Seoul unveiled a proposal last week to settle a wartime labor issue. It involves a South Korean government-affiliated foundation paying damages in place of Japanese companies.
The money will be given to those who say they or their relatives were forced to work during World War Two. Kishida is expected to tell Yoon he backs the idea.
But the plan has received pushback in South Korea from some who say Yoon's government is capitulating to Japan. The leaders will hold a joint news conference after their summit.
The Japanese government says any right to claims was settled completely and finally in 1965, when Japan and South Korea normalized ties.