In this story, children who were actually descended from Umayado were children of TACHIBANA no Ooiratsume and Kashiwadenominoiratsume only, and Tsukishime no himemiko was the first child of Umayado and Kashiwadenominoiratsume.
厩戸の血を実際に引いているのは、橘大郎女と膳郎女の生んだ子たちだけという設定で、彼女はこの夫婦の最初の子供である。