Especially during the era of the third Seii Taishogun (literally "great general who subdues the barbarians"), Yoshimitsu ASHIKAGA, his political power was absolute and Masakatsu KUSUNOKI lost the battle in 1392 and Kawachi Chihaya-jo Castle was surrended.
殊に第3代征夷大将軍・足利義満の時代になるとその勢力は絶対的なものとなり、1392年には楠木正勝が敗れ河内千早城が陥落した。