Kiyo Terauchi

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Kiyo has no combat training but possesses valuable knowledge of Breathing Style fundamentals, helping teach Tanjiro constant breathing technique during his stay at the mansion.

Kiyo is a girl with light skin, circular dark brown eyes, and shoulder-length black hair decorated with pink butterfly clips, dressed in the Butterfly Mansion's white nurse attire.

Kind and cheerful despite her family's death at the hands of demons, Kiyo dotes on patients like Tanjiro with snacks and good humor while genuinely caring about their recovery.