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Airi Mizutani (水谷 アイリ Mizutani Airi) is a student at Root Academy and a member of the Puzzle Club.


Airi is a short girl with brown hair and brown eyes, wearing glasses. She is usually seen wearing her school uniform.


Airi is cheerful and polite. Despite admitting herself that she isn't that good with puzzles, she likes them very much and continues to make them.

When she was wearing the Orpheus jewelry, Airi became overconfident, considering herself superior to others.