After yet another fever, Rozemyne awakes to some shocking news: the Sovereign knights captured for interrupting her ditter match might have been under the influence of trug. This brings a recent incident involving Lady Georgine to her mind, but Rozemyne decides to leave the matter to the adults. After all, the Interduchy Tournament is coming soon, and the students of Ehrenfest need to prepare! This event will also bring a long-awaited reunion--Ferdinand will be staying the night of the tournament in Ehrenfest's tea party room. Rozemyne struggles to keep her emotions in check, but she makes her decision: I will do everything in my power to welcome him! Follow along with Rozemyne's book-driven rampage in the next volume of this biblio-fantasy, including two new short stories and four-panel manga by You Shiina!

As snow falls around Ahrensbach's castle, Ferdinand, soon to be married to the duchy's next archduchess, receives a concerning letter. Not only has Rozemyne been summoned by the royal family once again, but she is also being taken to the underground archive hidden beneath the Royal Academy's library. Even as a third-year, she proves to be a source of constant headaches--and the chaos only continues when she manages to pull an unexpected figure into her joint research! The stakes are raised higher still when Lestilaut makes an astonishing suggestion, forcing her to participate in a game of bride-taking ditter with Leidenschaft's spear in hand.Rozemyne's hand in marriage hangs in the balance in the newest volume of this biblio-fantasy. Includes two short stories and four-panel manga by You Shiina.

She funnels her excitement into advancing the paper-making industry and gathering more support, all to create a world with more books for her to read. As winter approaches, however, the political struggles between nobles intensify. Various plots unfold and sow discord within the temple, and what happens next will forever change not just Rozemyne's future, but her new little sister's fate as well.

Shocking developments bring Part 3 to its climactic conclusion! This volume also includes short stories leading into Part 4, and four-panel manga drawn by You Shiina!