(From MC's perspective)
The following day,
10 A.M
After completing my verification, I walked into the library. This time as usual I directly used the poll booth to enter. The books placed outside are just shown. The real book collection is hidden in space.
A few minutes later,
I stepped out and stood in the middle of a dark space. I know the row of information will appear after a couple of seconds.
When the instructions appeared, I said my purpose. The next second, the scenery changes again. And I appeared inside a massive hall.
"How is this working?" My eyes lit up with surprise. Because I see the library with a huge number of collections. The setup outside was a disguise.
A quick glint flashes in my eye. So the consciousness which allowed me to enter must be some kind of artifact spirit. But I'm not sure about it.