Masayuki is suspected of killing his ex-wife when the police find her dead. There was a message written in blood on her hand that put Masayuki at a great disadvantage. The only one who can vouch for his innocence with an alibi was Yuki-Onna, who was with him at the time of the murder. But there's no way he can let a yokai provide a statement for him. Yuki-Onna asks Kotoko for help to track down the real killer.

Eleven years ago, Muroi Masayuki's life was saved by a Yuki-Onna up in the snowy mountains. Betrayed by his friends and his wife, he ended up anti-social and unable to trust anyone and eventually moved to the town at the base of the mountains where he met the Yuki-Onna. As he was wandering around town, he coincidentally runs into a woman who looks just like the Yuki-Onna...?!

A bound spirit asks Kotoko for some advice about a mysterious supernatural presence that showed up at its apartment complex. Every night, strange sounds can be heard from an empty apartment, and a doll with four arms was found in the room. In order to find out what's behind this, Kotoko and Kuro go to investigate. Kotoko begins her inference yet again so she can protect the order among the supernatural beings!