Because yes...do I really need to explain this? Nope!

yes

The enderman hybrid, Ranboo, finds himself in the Overworld, where he gets taken in some sort of SCP Foundation. There, he meets others "like him". Wonder what else he will find?

After meeting Six, Mark decides to tell his parents. In this world, if you describe anything like that, you get locked up until you turn 13. Little Mark has 9 years before release. He meets others, who have reported similar things to their parents. Turns out, he wasn't crazy, as he slowly watches all his friends perish to the alterate-infested mental asylum. (based on personal experiences, except the parts that are not.)