This book is over here... then those ten should go there... the twenty-seven here should be up there...
"Why are there so many books in this place?!!" - Noire
Phew. I was gonna explode if she didn't.
We're currently sorting out books in one of the biggest libraries I've ever seen! And I should know. I own one myself.
"You sure we gotta do this?" - Garami
"Of course. Master Managand is... was one of the most organized persons I have ever known. If he knew that his library was this disorganized, then he would be the one haunting this mansion, not me." - Jeeves
As for why we're here, it's because this butler/hunting dog followed the trail to a new clue. It led us to this library, which also acts as a Safe Area. Then Jeeves noticed that the bookshelves were not in order and deduced that they must be the key to entering the next area that's currently closed behind something strangely familiar to the Puzzle Gate I use in my Dungeon.