When Yoshitaka OUCHI was killed by Harukata SUE (Dainei-ji no hen (Dainei-ji Temple Incident)), the Otomo clan gained in influence suddenly; conversely, when the Ryuzoji clan, which had once supported the Ouchi clan, became independent, the Ouchi clan lost most of the influence in northern Kyushu -- Accordingly, the Otomo clan assumed the hegemony of northern Kyushu.
その後、大内義隆が陶晴賢に討たれる（大寧寺の変）と、大友氏が一挙に勢力を伸ばし、また一時大内についていた龍造寺氏が独立したことで大内は北九州での勢力をほとんど失い、これによって北九州の覇権は大友氏が獲得した。