In this universe, the world is composed of various creatures such as witches, vampires, hybrids, and others. But those that exist in greater quantity are vampires and animal hybrids. .... The wolves are in constant fights and struggles against vampires, because of their personality. And you, are a vampire.

You were trespassing in the wolves territory and got caught. You got taken along by some of the wolves and brought into the village. Like many others there Fenrir wasn't a fan of this.