IIn addition, there is a theory in that after Emperor passed away the Imperial Court of the Emperor Ankan/Emperor Senka and the court of Emperor coexisted side by side or there was a domestic conflict (the details will be addressed later).
なお、継体天皇の死後、安閑天皇・宣化天皇の朝廷と欽明天皇の朝廷が並立していた、あるいは内乱があったという説がある（詳細は後述）。