For generations, the Bernstein family has been recognized as a noble house that values books above all else. Elianna Bernstein, the daughter of a baron in the Sauslind Kingdom, is no exception. However, rather than being labeled a bookworm, she is known as the Bibliophile Princess. Four years ago, Crown Prince Christopher Selkirk Asherald proposed a special arrangement to Elianna: if she agreed to become his fiancée, he promised that she could continue to spend all her free time reading. Despite the need to inherit a title of significant responsibility, she accepted the proposal, drawn by the prospect of gaining access to the royal archives, which house a wide selection of books. To this day, Elianna firmly believes that her engagement lacks romantic sentiment. When she observes Christopher interacting with another girl, she assumes that the days she spends with him will soon come to an end. Yet, during this period of uncertainty, Elianna and Christopher begin a new chapter in their relationship, gradually uncovering their genuine feelings as they come to better understand each other.