A KNIGHT IN BLACK ARMORHaving been invited to attend a ceremony at the royal knights’ headquarters, Marie is suddenly thrust into public life, where she’s quickly scrutinized by Count Kyros's friend, Prince Louisphon. With comments about her appearance and her lack of noble manners, it’s an all too common occurrence within Marie’s life. However, when the count draws his blade to defend his fiancée’s honor, the matter quickly becomes one for the arena. Will a duel be what it takes to turn this political marriage into one of binding love?Based on the popular light novel series that also inspired an anime! Tobirano is a novelist in Japan. Betrothed to My Sister's Ex is their first series to be published in English.Chikage Nakakura is an artist in Japan. They are known for their work on Betrothed to My Sister's Ex.Mai Murasaki is an artist in Japan. They are known for their work on Villainous Daughter Aims for the Last Boss and Betrothed to My Sister's Ex.