The Ran family crest: Twin Dragon Lotus Spring

Members of the Ran Clan
The Ran Clan (藍家 Ranke) is the most powerful clan in Saiunkoku, directly below that of the imperial family. The clan's name translates to blue or indigo. The clan seal bears the emblems of Twin Dragon Lotus Spring.
Description
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They tend to be dormant in national politics and are colloquially known as "sleeping dragon", which is reflected in the description of the clan's seal
The specialty of the clan is producing salt from the water margins of Ran province. The Shiba are their main clan of retainers. The main residence of the Ran clan is located in Ran Province.
Members
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Ran Setsuna
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Ran Setsuna (藍 雪那 Ran Setsuna) is the collective name given to the identical triplets who act as the head of the Ran Clan and individually, they are named Yuki (雪 Yuki), Tsuki (月 Tsuki), and Hana (花 Hana). They are the first born sons of the previous clanhead.
Ran Shuuei
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Ran Ryuuren
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Ran Jyuusan
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Ran Gyokuka
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Ran Gyokuka (玉華 Gyokuka) is the official consort of Ran Setsuna, specifically of the eldest triplet, Yuki.
The Blue Retainers
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Each colored clan has four branch families as their retainers. The Ran clan's retainers are called the Blue Retainers or the Blue Gates. One among the four retainer clans are known so far.
Shiba Clan
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Shiba Jin