When the infighting of the bakufu called the Kanno Disturbance in which Shogun Takauji ASHIKAGA and Takauji's younger brother, Tadayoshi ASHIKAGA fought in 1350, the adopted child of Tadayoshi, Tadafuyu ASHIKAGA entered Kyushu.
正平5年（1350年）、観応の擾乱と呼ばれる幕府の内紛で将軍足利尊氏とその弟足利直義が争うと、直義の養子足利直冬が九州へ入る。