"First published in Japan in 2017 by TO Books, Tokyo"--Colophon.

Myne is determined to protect those she cares about most, so she abandons the life she knows to become Rozemyne, the archduke's mana-rich adopted daughter. She charges forward into this strange new world, not letting her new persona change her passion for books! Watch as the setting of this biblio-fantasy by book lovers, for book lovers continues to expand... along with the book-making industry!

To protect those she cares about from danger, Myne abandons the life she knows to become Rozemyne, the archduke’s mana-rich adopted daughter. But her passion for books hasn’t changed, nor does she hesitate to charge into another strange new world. In this biblio-fantasy by bookworms, for bookworms, the detailed setting continues to expand—and so too does the book-making industry!

Spring is the season when love blooms! Rozemyne's retainers are bursting with energy as they make clothes, attend their debuts, and shine in the new season. The improved printing press is finally completed in the temple workshop, and the variety of available books is steadily beginning to expand. Picture books, collections of sheet music, knight stories—all are now being sold. Their first aim is to further develop the paper-making industry in preparation for the spread of printing across the entire duchy. To this end, Rozemyne's party travels to Illgner, hoping to teach them how to make paper while also researching new materials to use. As the environment around Rozemyne slowly improves, the archduke's older sister arrives for a visit, shrouding Ehrenfest in an air of unease. Everything changes in this volume of this biblio-fantasy as nobles emotionally clash and the conclusion of Part 3 approaches! Including two newly written short stories and a four-panel manga drawn by You Shiina!

A certain college girl who's loved books ever since she was a little girl dies in an accident and is reborn in another world she knows nothing about. She is now Myne, the sickly five-year-old daughter of a poor soldier. To make things worse, the world she's been reborn in has a very low literacy rate and books mostly don't exist. She'd have to pay an enormous amount of money to buy one. Myne resolves herself: If there aren't any books, she'll just have to make them! Her goal is to become a librarian. This story begins with her quest to make books so she can live surrounded by them! Dive into this biblio-fantasy written for book lovers and bookworms!

In the midst of an approaching winter, Rozemyne the High Bishop is traveling between the temple and castle more than ever, participating in noble society, the baptism ceremony, and the Dedication Ritual. With her hands full teaching kids too young for the Royal Academy and even tutoring guard knights with bad grades, she's incomparably busier than last year. Her influence in both noble society and the temple is increasing steadily, and her squad of Gutenbergs work on improving the printing press while she sells picture books in the castle. Her love for books keeps growing, and the mana within her is likewise becoming progressively stronger! She faces new threats in the winter with the Knight's Order, then gathers ingredients for her jureve potion during Spring Prayer. This is another action-packed volume of this biblio-fantasy, where the Saint of Ehrenfest overcomes a winter of mysticism and battle! Including two lengthy short stories and a four-panel manga drawn by You Shiina!

Myne throws everything she has at paper-making while helping at the gate and preparing for Tuuli's baptism. She tries weaving faux-papyrus from fibers during winter and forming clay tablets during the spring, but both fail. Still, her love for books isn't so weak that she'd give up that easily. It's time to think up a Plan C! This is a bibliofantasy for all the bookworms of the world!