He invited Imperial Prince Kaneyoshi, who was the imperial prince of Emperor Gotaigo of the Southern Court (Japan) and dispatched to Kyushu region as seisei shogun (literally, "great general who subdues the western barbarians"), to Kumabe Yamashiro Castle and contributed to the expansion of Seiseifu fortress in Kyushu as a Nancho power.
その後南朝(日本)・後醍醐天皇の皇子で、征西将軍として九州へ派遣された懐良親王を隈部山城に迎え、九州における南朝勢力として征西府の拡大に努める。