Urano Motosu's love for literature knows no bounds and drives her insatiable desire to read. However, before she could fulfill her dream of becoming a librarian, she meets with a tragic accident, which claims her life. As her last breath leaves her body, she yearns for more time to indulge in her passion for reading. Surprisingly, her wish is granted, and she is reborn as a fragile five-year-old girl named Myne in a medieval era. But, Myne quickly realizes that books are a rarity, and only the rich have access to them, as they are made by hand. Despite the challenge, she refuses to let her love for books fade and decides to make her own books. Myne is determined to overcome all obstacles and prove that her passion for literature is unbreakable.