The first case is the twenty-sixth Emperor Keitai (according to the Kojiki (Records of Ancient Matters) and the Nihonshoki (Chronicles of Japan)) who was supposed to be a descendant from five generations (grandson of great-grandson) of Emperor Ojin who lived in Echizen (present-day Fukui Prefecture) or Omi (Shiga Prefecture); there is a theory that he didn't succeed any bloodlines of former Emperors, leading to a dynastic change; however, it was identified that the genealogy, indicating that he was a descendant of Emperor Ojin, no later than the era of Empress Suiko, was handed down through recent research. Refer to Emperor Keitai.), after the death of the twenty-fifth Emperor Buretsu, Emperor Keitai moved from another province and ascended the throne since Emperor Buretsu's direct descendants were all female descendants (no male descendants).
1つは第26代の継体天皇の場合であり（記紀による）、彼は越前（現在の福井県）もしくは近江（滋賀県）に住んでいた応神天皇の5世孫（曾孫の孫）とされており（それまでの天皇とは血のつながりがなく王朝交代となったとの説が存在するが、少なくとも推古天皇期には応神天皇子孫であったとの系譜伝承があったことも近年の研究から明らかになっている。継体天皇の項参照。）、第25代武烈天皇が死去した後、直系に女子はいたが男子がいなかったため地方から迎えられて天皇となった。