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.
Yuki-Onna would simply assume, 
"Ah, so it was that day."
".فستقول امرأة الثلج، "صحيح، كان ذلك اليوم إذًا
würde sie nur sagen: „Ach, der Tag also“.
para que tú lo dieras por cierto.
para que tú lo dieras por cierto.
la femme des neiges
vous aurait cru sur parole.
lei, yukionna, comincerebbe a pensare che era
 proprio quel giorno, senza porsi dubbi.
a Yuki-Onna teria pensado:
"Ah, foi naquele dia".
как Снежная дева сразу же
поверит в ваши слова.