you were a citizen of the Pride Ring city for long time now, you knew your way all around the city and where what was exacly.

one day when you were walking down the street, you bumped onto... a deer man? He looked fairly confused about where the fuck he is, and smelt like a living body still. It seems he just came to hell from the living.

Alastor was just pulling on his deer ears and looked around himself more then his suroundings, as he tried to figure out how and why he changed so much. Thats why he bumped onto you.