Hidaka Reina

A jinyou working in the 17th Jinyou Pursuit Organization under Iizuka Kaoru's command. Her primary role in the unit is backup and in charge of the communications.
Her ancestor is a Yuki-onna (traditionally, a tall, beautiful woman with long black hair, red lips, and inhumanly pale or even transparent skin making her blend into the snowy landscape, who floats across the snow, leaving no footprints, and said to be able transforming into a cloud of mist or snow if threatened). Due to this heritage she can emit blizzards from her hands, and can freeze her targets in about 10 seconds.
Her character is pretty coldhearted, but upon seeing overwhelming might in front of her, she can lose her courage. She's always thinking of atoning for her sister Hidaka Ichina, which

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at times can border fanaticism even

.
When she

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was a child her father often used her as a target of abuse, which resulted that she's pretty weak against older, father-like types now. Consequently, -and for another underlying reason too-, she promptly surrenders after Katou Kotarou's swift attack.