In November of the same year, Umako sent YAMATO no Aya no Koma, who was disguised as a messenger sent to deliver tributes from an eastern country, in order to assassinate Emperor Sushun.
同年11月、馬子は東国から調があると偽って、東漢駒（やまとのあやのこま）に崇峻天皇を殺害させた。