In agreement with the criticism on "Kiki"'s credibility as historical material and from the fact that the chronology before Emperor Keitai is far from truth, and that it is hard to believe that the Imperial family kept written records on a steady basis, some people strongly deny the meaning of the attempt to presume the five kings of Wa from the Oriental zodiac and the genealogy in "Kiki".
また、記紀の史料批判により、継体天皇以前の編年は到底正しいとは言えず、このころの王家内部では文字による記録が常時取られていたとは考えがたいことから、記紀に伝えられた干支や系譜を元に倭の五王を推定するという試み自体をあまり意味がないとする意見も根強い。