It's a library.

A huge, abandoned, dusty library.

Only it wasn't vacant.

There was a girl, no older than 18, sitting at what appears to be a librarian's desk. She was a fair skinned girl with jet black hair and electric blue eyes that looked like they know more that you'd think. She was wearing a dark blue hoodie, black shorts, had her bare feet up on the desk, and was reading a book.

Then her eyes shifted to you.

"Well, hello, there!" She said, taking her feet off. She put her book open and face down on the desk to not lose her progress. "I did not expect you to be here so soon. Thought you would drop in by the 21st chapter or so. Does not matter. You are now." She stood up, pushing back the chair she was sitting in.

She walked on, passing rows and rows of shelves. She started speaking again. "What do you think of Harry Potter? The books, not just the character." She started inspecting the books under the letter 'S'. "I have to say, J.K Rowling did an amazing job carefully constructing such a magnificent world, don't you agree?" She pulled out a book, glanced at the cover, then put it back. She moved to another shelf, also under the letter 'S', and repeated the prosses.

"But that brings the question: What is a world? Is it real like the one you are in? Or is it fake, a figment of your imagination?" She climbed a ladder, trying to reach the upper shelves. "Well, I think it is a matter of perspective. It is as real as you think it is. But does that make Harry Potter as real as we think he is?" She looked at you, smirking. "You will be the judge of that."

"AHA!" It appeared she's found the book she's looking for, blowing on its cover and sending dust everywhere. "But who is to say that the Harry you are reading about right now is the real Harry?" She began making her way back to the desk. "I know it may be confusing but think of it this way: the slightest change in the past can affect the present and the future, so do one's choices, the placement of objects, and whom we meet first. It creates, shall we say, an alternate universe. Like Undertale!" She set the book on the desk and picked up the one she set on it's face earlier by its spine.

"One thing is for sure. This…." She showed said book's cover, revealing Harry Potter And The Philosopher's Stone. "…Is not the direction this story is heading." She tossed it over her shoulder. The book flew off, as if bewitched, and landed in an empty spot in the 'H' shelf. "This.." She held up the book she brought. It was titled 'Story'. "Is the Writer's book. Don't tell them I took it." She winked. Opening the book, she skipped to the last thing written.

"You think?!" Asked Hermione, to which Harry just smiled sheepishly.

"I think the better question to ask is..." Said Draco, looking at them one by one, lingering on Harry a little bit longer. "..Who was it?"

As if by magic, new words were being written in the book.

"Hagrid?"

"I don't think so."

"Professor Flitwick?"

"Now why would he do that?"

"Professor Sna-

She slammed the book shut. "I do not think anyone needs more spoilers." She tossed the book over her shoulder, and it zipped back to where she took it from. "Do me a favour and do not tell the Writer that you have been here, hm? Except for me, they like to keep their library private."

Still barefoot, she made her way to the main door. She stopped. "Oh! Where are my manners?" She turned and bowed to the audience. "My name is Moon Comet." She looked up. "And whether or not you will see me again, is up to you." She turned around and left.