From 1572 through 1573, he attacked and defeated Kido-jo Castle and Tanaka-jo Castle (Omi Province), and he also attacked the Asai clan on the northern shore of Lake Biwa with battle ships and damaged the clan.
1572年-1573年にかけて、木戸城、田中城(近江国)を落城させ、また湖面より囲船にて湖北の浅井氏勢に襲撃し打撃を与えた。