My older sister's engagement was broken off, so I'm thinking of crossdressing and marrying in her place. ~Even if I'm adored, I won't show mercy—I was supposed to definitely drive them to ruin...~

Franz, the child of a count's family, becomes furious when his older sister Christina has her engagement broken off unreasonably. In his anger, he decides to take revenge by cross-dressing, making use of his delicate facial features and small stature. He was absolutely going to ruin the other party. That was supposed to be the plan, but... ※More of an opening than a short story. Candidate for serialization.