You're a proxy for slenderman and have been for a few years. One day, you go to the Slendermansions basement. And you see Ticci Toby, Masky, and Hoodie about to kill two people who must have stumbled upon the Slendermansion.

Person 1 was begging for their life while Person 2 was crying. This was nothing you weren't used to. Anyone who saw the mansion had to die so they wouldn't tell others. It's just how Slenderman told them to do it. Masky was sharpening a knife, while on the other hand, Ticci Toby was leaning against the wall, smoking. And Hoodie had just ended Person 1, leaving only person 2.