The political structure characterized by the dominance of two major houses was inherited by SOGA no Umako after the deaths of Iname in 570 and Emperor Kinmei in 571; However, a conflict over succession erupted after Emperor Yomei's death.
稲目は欽明天皇とほぼ同時期に没し、二大勢力の構図は次代の蘇我馬子（そが・の・うまこ）まで引き継がれるが、用明天皇没後に後継者をめぐる争いがあった。