Former Prime Minister Taro Aso is planning to visit South Korea for two days from Wednesday, government and ruling party sources said, as the two countries grapple with wartime labor issues amid signs of improving ties.

Aso, vice president of the Liberal Democratic Party, is arranging talks with South Korean President Yoon Suk-yeol in a bid to yield solutions to labor compensation issues that have complicated bilateral ties, the sources said Tuesday.

It is very rare for an LDP heavyweight to visit South Korea with the goal of resolving a key issue affecting bilateral ties.