The story tells us about Main, a girl from Japan who spent her entire life surrounded by books and even died in their arms. "Books are everything to me." — the main character, before her death, prayed to the gods so that in her next life she could live among books, but in reality... She is in the magical Middle Ages, where, as in our story, a book stands like a good two-story house in the center of the city. Everything would be fine if she were a princess, but in reality she is just a commoner, the daughter of a soldier... But Main did not despair, although she was on the verge of it, and decided for herself that she would make the books herself.