Therefore, backed by the power of the Soga clan, he acceded to the throne in 629 although he had not been officially assigned by the okimi (great king), who outlived the Imperial Prince Umayado, who consequently died earlier than the okimi.
これにより、結果的に先に亡くなった厩戸皇子より長生きした大王からは後継者に明確に指定はされなかったものの、蘇我氏の力を背景に629年（舒明天皇元年）に即位した。