Fukei cooperated with another Rusutsukasa of Yamato City, SAKANOUE no Kumage, and planned to go into the enemy's major camp pretending to be Takechi no Miko (Prince Takechi) by the leading of Kumage and some members of Yamatonoaya no Atai (the Yamatonoaya clan).
吹負は別の留守司坂上熊毛と謀議して、吹負が高市皇子と偽って敵の本営に近づき、同時に熊毛と一部の倭漢直（倭漢氏）が内応するという計画を立てた。