In March 1351, during the Shohei and Kano era, Takauji was defeated by Tadayoshi and had entered into peace negotiations; however, the KO brothers, Moronao and Moroyasu, were murdered by Tadayoshi's forces.
正平6年/観応2年（1351年）2月、尊氏は直義勢に敗れて和議を結ぶが、高師直、高師泰兄弟が直義方に殺害される。