After the West squad lost the final battle, he was deliberately killed together with Naomori KUMAGAI and Iezumi KAKIMI by the betrayal of Yorifusa SAGARA, and the brothers of Tanenaga AKITSUKI and Mototane TAKAHASHI who took the defense together.
西軍が本戦で敗れたのち、ともに守備していた相良頼房、秋月種長・高橋元種兄弟らの裏切りにより、熊谷直盛、垣見家純らとともに謀殺された。