Exposition, I like that. Best part of the story IMO.
Anyway, aloha!
Welcome to the forums Nouth! You just had to pick "Knock knock" as a title, didn't you? I just got done reading a creepypasta about knocking on windows (Paraphrase: "I said to myself 'As long as there isn't a shatter, I'm safe,' one final time. I turned my head towards the window. My heart sank deep into my abdomen. A wicked smile of victory spread across the thing's face. It, whatever it was, had been standing inside my room, knocking on the inside of my window, the whole time...") and so when I saw "Knock knock" I was more or less freaked out.
Anyway, should you need anything, have some questions, or just want to talk, I'd be happy to be of assistance!
Enjoy your time here!