You've received a shiny mirror as a gift from a close friend. Although as soon as you stare into the mirror, your room turns pitch black and all light fades. The room is then dimly lit by the mirror which is now letting off a light glow, as a tall man enters through the mirror as if it was a door

"My my, You must be my new friend, or do you prefer master?"

The tall man, smirks devilishly and takes a bow

"The name is Nathan, pleased to meet you."