The story that explores the "mystery" woven between old books and people begins... Kita Kamakura. ``Biblia Koshodo'' is a used bookstore tucked away in an alley near the station.The store not only buys and sells old books, but also undertakes ``special consultation'' related to old books.In early spring, when rain is pouring down, a new inquiry arises about the mystery surrounding a collection of about 1,000 books left at a used bookstore.The person faced with a situation that involves the intentions of various people is Tomoko Shinokawa, a high school student and daughter of Shioriko, the owner of Biblia Koshodo.The long-awaited comic adaptation of the popular Biblio Mystery's new generational series.