When an internal strife occurred in bakufu, and Naoyoshi ASHIKAGA, a younger brother of Takauji, was expelled in 1349, Naofuyu ASHIKAGA, who was Takauji's child and Naoyoshi's adoptive child, sensed danger and hid himself in Kyushu.
貞和5/正平3年（1349年）、幕府内で内訌が起こり、尊氏の弟である足利直義が追放されると、直義の養子で尊氏の庶長子である足利直冬は身の危険を感じ九州へ潜伏。