Under the scorching heat of midsummer, I visited my coworker's family home, a place I'd known since childhood, only to have my heart shaken by an unexpected beauty emerging from the ordinary. Yukie Mizukami, my coworker's mother, had once been my swimming coach during school days—a figure always kind and warm toward me. Ever since childhood, I'd harbored feelings for her, a quiet love buried deep within my heart, which I still remember vividly. One day, after work, I was showering at my coworker's house when I suddenly locked eyes with Yukie as she appeared in the room. She flinched momentarily, turning her face away, yet her gaze had clearly fallen upon my body. In that instant, excitement and desire flickered in her eyes. This encounter would become the spark that rapidly deepened the relationship between us.