He attempted to withdraw the troops to Kyoto, but Yoshiari ISSHIKI and the local samurai in Tango Province made a counterattack, which led Tomotsune to commit suicide on August 14.
軍を京都に撤退させようとしたが、一色義有や丹後の国人の反撃を受け、6月26日に自害に追い込まれた。