Biography
Finana Ryugu is an English-language Virtual YouTuber, affiliated with NIJISANJI EN. She debuted as part of the branch's 1st wave, "LazuLight".
Her bio on the official NIJISANJI site describes her as follows:
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"A mermaid spending time with tropical fish in the sea of coral reefs.
Has a heart as clear and pure as the calm and beautiful sea."
Biography text from Last.fm, available under CC BY-SA.