In 1560, after sending his wife of the forced marriage back to her family, Shinkuro challenged the decisive battle against the Rokkaku clan, leading his hard-line retainers, and won an overwhelming victory over Yoshikata in the Battle at Norada.
永禄3年（1560年）、嫁を強制送還した新九郎が強硬派家臣を率いて六角氏との決戦に臨んだ野良田の戦いでは、義賢に大勝。