After losing at pachinko day and night, Murakami decides to clear his head by calling an escort service specializing in married women. The recommended woman is busty, beautiful, shapely, and eager to please—a perfect choice. Yet Murakami cannot shake the feeling that he has seen her before. Sure enough, she is the cold-hearted former homeroom teacher who looked down on him during his school days. Once the now-unemployed pachinko addict discovers her secret job, he decides to use it against her and settle his years-old grudge with revenge sex...