Motosu Urano, a college student and a bookworm of the highest order, loses her life in an avalanche of books and wakes up in another world as a sickly girl named Main. Nevertheless confident that she can deal with any situation as long as she has books to read, she looks all over her new home for one, but doesn't find any. To make matters worse, she couldn't see any writing in town when out with her mother Eva. She realized that she found herself in a world with a low literacy rate, one where books were prohibitively expensive.

Spring has arrived, and Main is raring to go make clay tablets in the forest. But first, she must convince her family that she can handle the journey.

Main learns from Frieda that the illness she has is called the Devouring, and that it will flare up if she ever feels anxiety or loses hope. Almost on cue, her fever starts acting up...

The head priest wants more information on Main, so he sends two of his aides, Eckhard and Eustachius, to investigate her.

Eva and Turi find themselves having to accompany Main to Corinna's residence, because she wants to take a look at the outfit Main wore for her baptism.

The stark contrast of the values at the church compared to life downtown continues to bewilder Main, as she butts heads with her retainers and her expected duties at the church.

With the picture-book production in full sway, Main must navigate several hurdles regarding the process and, more pressingly, Wilma's condition.

Autumn has come to a close. Main starts selling the scripture picture books, gets asked by the apprentice blacksmith Johann to be his patron, and starts taking the next step in her bookmaking endeavors. While this is going on, Main finds out that the guild master of the Ink Guild, Wolf, is trying to get information on her. Benno then proposes an idea to Main and...

Main and the others get ready to head off to the Spring Prayer, when they meet a blue-robed priest named Sylvester. Main doesn't know how to deal with Sylvester who seems to do whatever he wants. She tries to avoid Sylvester as they go around to various farming villages and she does an amazing job doing all of the rituals. Eventually, they end up at Viscount Gerlach's mansion. Apparently he had shown interest in Main before. But that night, something terrible happens!

With the Spring Prayer finished, Main and the others returned to the cathedral. Sylvester appoints Main as his guide to show him around the orphanage and workshop, where they observe how the scripture picture books are made. As he leaves, Sylvester gives Main a necklace with a black stone, saying it's a protection charm just in case anything were to happen. Meanwhile, Ferdinand, who had also witnessed the books being made, tells Main's method of making books will change history and how dangerous that may be.

Because of the lack of caution exercised by one of the gate guards, the carriage with the noble from another domain has entered the city. Gunther finds out that Main is being targeted and gets worked up over protecting Main. But then, Main is attacked by some mysterious men. Main believes what Sylvester told her and presses her blood seal upon the black charm he gave her. But then, Main's attackers become even more aggressive. Finally, the high priest's true intentions and his plans with Dirk are revealed.

To protect her family, Main agrees to be adopted by Sylvester. It is he who enters the cathedral with Sir Karstedt just at the moment when Ferdinand and Sir Bindewald are involved in a fight, but this entire affair will not only have consequences for Main because now Count Bindewald, the bishop, and Delia have to answer for their actions.