Romelia Senki ~Hakushaku Reijou, Maou wo Taoshita Ato mo Jinrui Yabasou dakara Guntai Soshiki Suru~

"Romé, no, Countess Romélia. I can no longer do this with you. I am breaking off our engagement. We will part as soon as I return to my country." Prince Henri announced this to me while I was still rejoicing the long-awaited defeat of Zergis, the Demon King. But the prince did not know, I have the miraculous power of "Grace."