Thereafter, he endeavored to expand the influence of the Southern Court in Iyo Province by, the ancient document 'Kutsuna Ichizoku gunchu shidai' (records of the meritorious war service of the Kutsuna family in Kutsuna-jima Island) says, entering Uwa no sho (Manor Uwa) in the same province as 'Taisho' (meaning a great provincial general, perhaps) or by going to and commanding the battle in Kutsuna-jima Island.
以降、「大将」（国大将のことか）として同国宇和荘に入ったり、忽那島に渡って合戦の指揮をする（「忽那一族軍忠次第」）など伊予南朝方の勢力拡大に努めた。