While I was thinking about Nina going through conspiracy books in Patchouli's library, it got me thinking... π€¨ I think there's a pretty good chance that the library is also filled with misinformation.
When Patchouli reads her books, the content is not the only objective. Like, it seems she also enjoys the lingering thoughts and sentiments of the author of the book too. So even if the book is filled with nonsense, Patchouli enjoys reading it nevertheless if its author was really passionate about it.
