: This is a recurring location in Ooo, run by the Turtle Princess.
In the Adventure Time episode (Season 3, Episode 22), the plot follows Finn as he discovers a secret society of "Pagelings"—tiny paper people—living in the library while Jake is busy trying to learn about Rainicorn history. Episode Overview [S3E22] Paper Pete
: Jake spends the episode trying to read Rainicornicopia , an unabridged history of Rainicorns. Because he ignores Finn and doesn't actually finish the book, he misses crucial information—such as the fact that Rainicorns age rapidly. : This is a recurring location in Ooo,
: Fans on Reddit have noted a book in the background that appears to feature the Ice King's crown and ice shards. Because he ignores Finn and doesn't actually finish
: The episode centers on Jake’s skepticism. He believes Finn is just playing "make-believe" and refuses to acknowledge the tiny creatures, even as they crawl on him and try to get his attention.