Also, Emperor Buretsu, son of Emperor Ninken, did not have a heir, and Emperor Ketai, who is said to be a descendant of five generations counting from Emperor Ojin, succeeded the throne, but since the blood line from Emperor Nintoku had been broken off by this, there is also a theory that a change of Dynasty took place.
また、仁賢の子の武烈天皇も跡継ぎがなく、応神天皇5世の孫とされる継体天皇が王位に就いているが、これにより仁徳以降の血統が途絶えていることから、王朝交代があったとする説もある。