In 1569, the Amago Remnant Corps occupied Chuyama, Izumo Province, located on the coast (Sea of Japan), with the cooperation of Tamekiyo OKI, a powerful family in Oki Province.
隠岐の豪族・隠岐為清の協力を得て、永禄12年（1569年）には海浜の出雲忠山を占領する。