Akuyaku Oujo no Ryuu Kishi-dan Seikatsu: Konyaku Hakigo ni Dekiai Sarete mo Komarimasu!

Synopsis

After her beloved boyfriend broke off her engagement, Lilia was labeled a "villainous princess" by the people. She tried to make a comeback after becoming a recluse and was appointed captain of the Dragoon Corps, but an unexpected challenge awaited her...! (Source: Young Champion Web, translated)