In the spring in the same year, he got sick at the front while attacking Oguri Castle in Hitachi Province to subjugate Fusaaki UESUGI and Kagenaka NAGAO by the order of Shigeuji, and he died of sickness on June 14.
同年春、成氏の命を受けて上杉房顕・長尾景仲らを討伐するために常陸国小栗城を攻撃中に陣中で病に倒れ、閏4月20日に病死してしまった。