"Your fiancée is me, you know?"

Juste, the fourth prince of the Mimarna Kingdom, suddenly breaks off his engagement with the Countess Louise Belton at a party and declares that he will become engaged to the Viscount's daughter Felicie Laforet. However, the one who responds to him with "I understand" is actually the Marquis's daughter Aurelia Clarti. "Wait, wait. Why are you answering?" "Why, you ask... because I am your fiancée, Prince Juste." Prince Juste is confused by the engagement swap that took place without his knowledge, but the situation develops in an unexpected direction...? ※ The setting is lighthearted. ※ On 12/10, this ranked 3rd in the daily overall rankings. Thank you!