The Witch in the Emperor's Quarters황제의 침실엔 마녀가 산다; Hwangje-ui Chimsil-en Manyeoga Sanda; There's a Witch in the Emperor's Bedroom; The Bedroom-en-Witch of the Emperor; I'm Going to Marry the Psycho Grand Duke for Revenge; Я собираюсь выйти замуж за великого герцога-психопата ради мести; 復讐のためサイコ大公様と結婚します; Fukushuu no Tame Psycho Taikou-sama to Kekkon Shimasu

After enduring years of abuse from her adoptive noble family, Isabella finally manages to escape their home. In the midst of her peril, she unexpectedly discovers that she is a witch, and her newfound powers are also witnessed by her sister's fianc, Grand Duke Xenos Ferdian. Instead of taking her back to her family, Xenos offers to marry her, telling her to use her powers to help him ascend the throne in return for his help with her revenge. Watch Isabella triumph over those who wronged her with her fearsome magic and her new status as the Grand Duchess!