Lady Demiruka is an Overpowered VillainessLady Demiruka is an Overpowered Villainess –The Mentally Strong Noble Lady Crushes the Prince’s Attempt to Break Off Their Engagement!, ; Demiruka-sama wa Goritsuyo Akuyaku Reijou ; デミルカ様はごりつよ悪役令嬢 ; デミルカ様はごりつよ悪役令嬢 メンタル最強お嬢様は王子からの婚約破棄をぶっ潰します！