Female college student Linai (voiced by Yuxiang Iguchi) is a bookish girl. After unremitting efforts and painstaking efforts to get the position of librarian, Linai suffered an earthquake on her first day at work, causing her to be buried alive by books. When Linai regained consciousness again, she found herself reincarnated and came to another world as a 5-year-old girl, Mei Yin. What is unacceptable to Linai is that there are neither bookstores nor libraries in this world, and all the books available are marked as sky-high prices for the entertainment of the rich. As the daughter of a poor family, May may not be able to touch books for the rest of her life. With her enthusiasm for books, Linai decided not to be reconciled to the status quo. Since she couldn't buy a book, let's make it. Soon, Linai's decision attracted like-minded friends.