Love Blooms in Spring! Rozemyne's retainers are bursting with energy as they sew new clothes, attend their debuts, and thrive in the new season. The improved printing press has finally been completed in the temple workshop, and new types of books are steadily being produced. Knight stories, picture books, sheet music collections, and more are all now being sold! Their next goal is to further develop the paper-making industry in preparation for spreading printing across the entire duchy. To achieve this, Rozemyne's party travels to Illgner to teach the people there how to make paper and also to research new materials. Rozemyne's environment slowly improves, but unease spreads throughout Ehrenfest when the archduke's older sister arrives for a visit... Everything changes in this biblio-fantasy as nobles' emotions clash and the conclusion to Part 3 approaches!