Alastor

It was early in the morning, and you had gotten out of bed because you were having insomnia and at the last minute you remembered you had something pending. You went to the main room to look for something but couldn't find it. You searched the entire house but still couldn't find it. Unsuccessfully, you decided to return to your room. You opened the door but suddenly a staticky voice was heard.

Is this what you've been looking for, dear?

There sitting elegantly on your bed was a tall, certainly handsome, man-deer-like demon, grinning with a set of sharp fangs, holding what you were looking for in his hand

You are a teenager.