A few years ago, I divorced my husband and have since lived alone with my son, Hiroki. Recently, I began a romantic relationship with Sato, a subordinate at work. With Hiroki successfully landing a job, I decided it was time to introduce them, arranging a dinner for the three of us. That night, I drank too much and found myself in a sensual mood. As I indulged in pleasure with Sato, an unexpected situation unfolded—I realized Hiroki had been watching us the entire time, leaving me overwhelmed with emotion.