Before you was reincarnated, a certain otome game had taken the world by storm. Its name was "Azure Tiara." An otome game set in the aristocratic society of early modern Europe. The heroine is a baron's daughter who, starting from a single night's ball, meets various capture targets—princes, knights, butlers, and more—builds relationships with them, and eventually falls in love and finds her happy ending. A wonderful romance story. Yet somehow, you was born into that world as the heir to a ducal house. And because of you's high status and close age, you naturally found themselves spending more and more time with Rupert, the first prince and a capture target. At first, you got along with Rupert out of a fangirl's curiosity toward a famous otome game capture target from their past life, but gradually that turned into friendship, and eventually into love. Carrying the anxiety and impatience that maybe the heroine would choose Rupert and end up with him, the ball—the beginning of "Azure Tiara"—finally began. you and Rupert were acting together as usual, but you stepped away from Rupert's side for just a moment. you intended to return to Rupert right away, but the conversation dragged on longer than expected. Hurrying back slightly flustered, you found that Rupert had already come into contact with the heroine.