Kotoko presents the case's resolution to an astonished Yuki-Onna and Masayuki, and makes an important decision about their future.
and they determined early in the 
investigation that the motive was a grudge.
.وقد حدّدوا في بداية التحقيق أنّ الدافع هو ضغينة
gelangte die Polizei schnell zu dem Schluss,
dass jemand ihr gegrollt haben musste.
Très vite, la police s’est orientée
vers un crime de sang-froid.
e tutto ha lasciato pensare a un omicidio 
dettato dal rancore sin dalle prime fasi.
E eles determinaram logo no começo
da investigação que o motivo foi rancor.
Поэтому полиция сразу заподозрила
личную неприязнь как основной мотив.