王子、婚約破棄したのはそちらなので、恐い顔でこっちにらまないでください。

Synopsis

The prince to whom I was engaged to decided he would marry a princess from a neighboring country in the name of national interest confronted me in front of everyone to break off the engagement. I suppressed my personal feelings and replied that I would accept breaking it off. At that moment, a voice said, "Understood then, though I'm a commoner, I want to be in the running to be your new fiancé!" The man who interrupted me was a guy I liked so much I thought he had stepped out of a story!