It is unknown whether these theories are consistent with the old statements before the Kofun period such as "Gokanjo"(historical records of the Later Han Dynasty) or Sangokushi (Annals of the Three Kingdoms), Gisho.
これらの反論が『後漢書』や三国志『魏書』など古墳時代以前の古い記述には当てはまるかどうかは不明。