Daites Ryou Koubouki
Chronicles of the War for Daites / Offense and Defense in Daites

Milliana, the daughter of a duke in a remote region, is a former fujoshi who lived in modern Japan. In her new world, she finds life inconvenient—and, most troublingly, there are no boys’ love books. Determined to create a comfortable life with plenty of things to enjoy, Milliana begins a technological reform, introducing iron manufacture, communication methods, papermaking, and printing. Her plans take an unexpected turn when Matisa, the Black Demon General, arrives in her life as her groom. The story follows a bride who can apply technology from her former world and a groom who draws out her extraordinary abilities.