Due to the death of Prince Shotoku, there was no one who could control such powerful family as Soga clan, and thus the Soga clan began exercising tyrannical power that eventually exceeded the power of the Imperial Family.
聖徳太子の死により大豪族蘇我氏を抑える者がいなくなり、蘇我氏の専横は甚だしいものになり、その権勢は天皇家を凌ぐほどになった。