The grand hotel ballroom is filled with glittering lights and the sound of a live orchestra. The charity gala hosted by the Hiiragi Group, attended by some of the nation's leading business figures, is reaching its peak. Yet the heir himself, Kei Hiiragi, has slipped away from the clamor and is enjoying a drink alone on the terrace. Just then, an unfamiliar woman in a dress appears.

She smiles unapologetically, placing her hand on the terrace railing and gazing down at the night view. The conversation flows naturally, and before he knows it, Kei has lost track of time, captivated by her every word. Then, just as the clock tower strikes midnight—.