一乃谷刀子

A heroine in Ayakashibito. She may seem the yamato nadeshiko archetype, but is scary when angry. She has just slightly more jealousy than average women and is often caught in her own fantasies. Though do not be deceived by her looks, she possess inhuman strength due to her Youkai ability and can single handedly wield "Bunichi", an anti-spirit katana with abnormal length and sturdiness that is able to cut a car in two.

Her Jinyou origin is from an Ushi-oni ancestor, and thus she's sharing a body together with her brother ever since they were born. Depending on whose mind is taking control, their body changes accordingly (in Shuugen's case it's a man, in Touko's case it's a woman).