The Silver Wolf Has Entangled the Sacrificial Princess and Won't Let Go

Leferia is a kind-hearted girl who can talk with animals. Those who live in the kingdom of Caudrelle never grow old, and it is truly a land of dreams. However, in order to maintain the boundaries, once every few decades, a kidnapped elf woman must be sacrificed. Tomorrow is the day Leferia is going to be sacrificed. But before that, Leferia hopes to meet "Yugram," a wolf she met long ago...

(from mangaupdates)