In 1370, he supported efforts to control the Kyushu region by dispatching his personal friend Sadayo IMAGAWA (Ryoshun) to Kyushu drive out the Southern faction which included Imperial Prince Kanenaga (also known as Kaneyoshi).
1370年には個人的交友もあった今川貞世（了俊）を九州へ派遣して懐良親王ら南朝勢力を駆逐させ、九州制圧を後援する。