At the Battle of Takehiro in 1571, to obstruct the southern expansion of Nobutomo AKIYAMA who had been sent before the Takeda clan, Yoshikatsu cooperated with his relative, the Noda Suganuma clan, and unfortunately he was killed.
元亀2年（1571年）、武田氏の先遣・秋山信友の南進を阻むため、縁戚・野田菅沼氏に協力した竹広合戦で、不運にも義勝が落命する。