 Though Ryūren claims to have no interest in becoming an Imperial official or the head of the Ran clan, Kurō Hong seriously weighs a proposal from the Ran clan to marry Ryūren to Shūrei.Later in the series, Ryūren is revealed to be the Blue Immortal, one of the Eight Sages who served the first emperor of Saiunkoku.is the collective name of the three eldest Ran brothers, who are triplets acting as a single entity to lead the Ran clan.