Around 1574, the Amago Remnant Corps captured castles in Inaba Province, and secured Wakasa Oniga-jo Castle and Ichiba-jo Castle with the aid of Munekage URAGMI, who was on Oda's side.
天正2年（1574年）頃には因幡国の諸城を攻略し、織田方の浦上宗景の助力もあって若桜鬼ヶ城・市場城を確保。