It is said that because Emperor Tenchi (Tenji) took Nukata no Okimi away from Oama no Miko (Emperor Temmu), he sent his four daughters to Oama no Miko (Emperor Temmu) to become princesses for an expiation.
大海人皇子から額田王を奪ったので、罪滅ぼしとして（自分の）娘4人を大海人皇子の元に妃として送り込んだと言われている。