The Takanashi clan resisted the governor Yoshitane SHIBA, rose in arms at Zenko-ji Temple along with Yorikuni MURAKAMI, Seijun OGASAWARA and Taro NAGANUMA in 1387, attacked the prefectural office in Hirashiba (Amori, Nagano City) in May, fought at Urushidahara (Nakagosho, Nagano City), captured Yokoyama-jo Castle (in which Ujiyasu NINOMIYA, Shugodai [deputy of Shugo, provincial constable] had taken refuge) in September, and attacked Namani-jo Castle (Amamiya, Chikuma City).
また守護の斯波義種に反抗して元中4年/嘉慶(日本)元年（1387年）善光寺に村上頼国、小笠原清順、長沼太郎らと挙兵し5月に平柴（長野市安茂里）の守護所を攻めて漆田原（長野市中御所）で戦い、8月には守護代の二宮氏泰が篭城する横山城を攻め落とし、続いて生仁城（千曲市雨宮）も攻めた。