Konyaku Haki kara no Dekiai Seikatsu Ryuuto Koutaishi no Ban ni Erabaremashita

The moment Prince Daymond, the second prince, broke off their engagement, Christiana regained her memories of her past life. Just as she decided to live life on her own terms, she receives a marriage proposal from the Dragonkin Crown Prince. Furthermore, the bloodline she inherited from her deceased mother is that of a descendant of Aquitaine, a family with the right to succession to the throne of all nations… Christiana's future is fraught with turmoil! (Source: Ichijinsha, translated)