When rumors spread that Director Yoshino would face disciplinary action from HR, I strongly opposed the severe sexual harassment he directed toward my wife, Shiori, our company's receptionist, and reported him. As a result, Director Yoshino was demoted and, as a warning to others, ordered to go on a one-week business trip. Seeing his downfall, I felt a twinge of guilt—and since we had an anniversary coming up and he wanted to earn extra allowance from the trip—I offered to take his place. Surprised by my offer, Director Yoshino smirked confidently and agreed. Unaware that during those seven days, his plan to steal my wife would unfold, the story begins.