Mami Yamaguchi serves as a dedicated concierge at an opulent hotel, attentively fulfilling guests' requests. During a routine shift, her manager alerted her to an imminent Italian VIP requiring meticulous care. While responding, she discovered Lucius Modestus emerging abruptly from a bath and assumed he was the anticipated visitor, promptly offering assistance. When the genuine Italian guest arrived moments later, her composure faltered. Convinced of a misunderstanding, she rushed to locate Lucius, retracing steps to the bath—unaware he had already returned to his original time period.