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！

Demirca, the daughter of the Duke of Granshed, is a powerful young lady who is both beautiful and intelligent, as well as having a strong mental strength. Since she was young, she has been educated as a candidate for the crown princess, and she has no doubt that she will marry into the royal family, but she is shocked by the unexpected rejection from her timid prince. ...Unexpectedly, he leisurely begins to crush the deal!