The library

After checking so many doors and so many rooms, she finally found the library she was looking for. The books were arranged in a strange manner. No one ever saw things like this; even Baldassare let out a surprised sound. The library had floating bookshelves, rectangular tables hanging in the air with chairs all around, and the space was bigger than what the castle made it seem.

"Wow, I didn't know that this castle had things like this."

"I doubt anyone knew about this. It wasn't like this before you came here," he replied with a big smile. Sierra didn't know if he was joking or not. She eyed him suspiciously. "Since things are already like this, you should search intently for the book you want. There is already a flood of books added to all shelves. I hope you will be able to find what you look for," he smirked then vanished into thin air.