In Biblia Koshodou no Jiken Techou, Shinokawa Shioriko, a bookstore owner in Kamakura, delves into the secrets hidden within ancient books brought to her shop. When a book-shy young man named Daisuke inherits a valuable collection from his grandmother, including autographed works of Natsume Soseki, a renowned Japanese writer, he seeks Shioriko's help. Will the reserved and introverted Shioriko unlock the enigma behind these special books?