Richard, a middle aged warrior has returned to his hometown after being discharged from his duties as a frontier guard. He is currently searching for employment. He has started living with his younger sister, Stella, who graduated from the prestigious Magic Academy. However, something seems amiss with her. Despite her intelligence and refined appearance, Stella, who grew up in a humble background, used to harbor a dislike for her older brother, Richard. But now, she has become unusually docile and clingy. It turns out that Stella’s body is being possessed by Lady Geraldine, the Duke’s daughter, who is taking a short “vacation” before her wedding?! Richard sees an opportunity to make a positive impression on Lady Geraldine and potentially secure a position in the Holy City. With this goal in mind, he sets about caring for both Lady Geraldine and her sister’s familiar, Belle.