In Saiunkoku, multiple births were usually seen as bad luck, causing such infants to be killed at birth, but their father spared their lives and raised them to become indistinguishable from one another. They were taught by Shōka Hong in their childhood and grew close to him, but they still don't get along with Reishin. Fourteen years before the story begins, the triplets lived in the capital and served as a government official (in their collective identity of "Setsuna Ran"). After Emperor Senka became ill and the succession dispute fell into chaos, the triplets returned to their home and never returned.