darkiplier x reader (darkness is your friend)

Hey guys instead of me talking about who I am and what this is let me just make it short for you.

your name is y/n and you was a YouTuber your self. y/t/c is your channel name and you have the same number of subscribers as the famous Markiplier. One day you wanted to do a video with him. He agree but after a while of playing your favorite game with your favorite youtuber. He start to act wierd next thing you know you wake up in a dark room and see a dark mark. what will happen???
I don't own the art work or the character.