When father Yoshioki OUCHI died and Yoshitaka OUCHI inherited from his father, Yoshitaka commanded Okifusa SUE, who had taken part in various battles, to conquer northern Kyushu, dispatching him to Kyushu.
大内義興の死後、息子の大内義隆が後を継ぐと、義隆は各地を転戦していた陶興房を九州に派遣し、北九州を攻略するように命じた。