Urano Motosu, a voracious, book-obsessed Japanese college student and newly minted librarian, dies in a freak earthquake crushed beneath an avalanche of her own beloved books. Reincarnated in a medieval, fantasy-style world, she awakens in the frail body of Myne, a five-year-old commoner girl living in poverty with her soldier father, Gunther, and doting mother, Eva.Myne quickly realizes this new society lacks affordable books; literacy is a luxury reserved almost exclusively for the wealthy nobility. Desperate to read, Myne attempts to make her own paper and write stories, but her weak body—plagued by a mysterious, debilitating fever called the Devouring—constantly collapses under physical strain.Determined to survive and fulfill her dream of reading, Myne uses modern knowledge from her past life to invent household goods like shampoo and plant-based paper, selling them to earn money. Her ingenuity catches the attention of Otto, a
former soldier turned merchant clerk, and Benno, an ambitious young merchant who becomes her vital mentor and protector. Through Benno, Myne establishes the Gilberta Company to market her inventions, growing closer to her ultimate goal of mass-producing books.However, Myne’s path is fraught with mortal danger. The Devouring is actually a rare, deadly magical affliction that only affects children of noble blood or commoners with high mana. Without access to expensive magical magic-suppressing tools, Myne is slowly dying. Her fate dramatically shifts when she meets Ferdinand, a brilliant, stern high priest and noble who tests her memories using magic. Recognizing her immense, dangerous mana and useful modern knowledge, Ferdinand takes Myne under his wing, offering her sanctuary and the chance to work in the cathedral's massive library in exchange for her service.Entering the religious temple as a blue-robed apprentice priestess, Myne faces steep class prejudice from corrupt nobles and snobbish aristocrats who despise commoners. Despite her fragile health and the immense culture shock, Myne gathers a fiercely loyal group of orphans—Gil, Delia, and Fran—who learn to love and trust her. She also bonds with her childhood friend Lutz, who stands by her through every perilous business venture.As the series progresses, Myne navigates deadly political intrigues, masters her overwhelming magic, and works tirelessly to revolutionize her world’s publishing industry. Ultimately, Myne is forced to make a heart-wrenching choice: to be adopted by a noble family to save her life from the Devouring, she must abandon her beloved commoner family, transforming her personal quest for books into an emotional saga of sacrifice, resilience, and
unconditional love.