Meanwhile, Motoharu's father, Chikahira, who got adversarial with Motoharu, cooperated with the Southern Court forces in Kyushu, Hiroyo OUCHI in Suo Province and so on, and invaded Motoharu's territory during his departure for the front in Kyushu.
一方、敵対関係となった父・親衡は、九州の南朝方勢力、周防の大内弘世などと結んで、九州出陣中の元春の領地へ侵攻した。