"What a boring life..." sighed Ko. He stared down at his mother Megumi's crown, rhythmically bobbing it up and down over his crotch. Day and night, he had continued engaging in repeated incestuous acts with his mother. As early autumn arrived, Ko accompanied his mother on a visit to their relatives' home. The encounter there would become a major turning point for him. It was with his mother's own younger sister—Natsumi, a vibrant, alluring woman in her thirties whose sensual charm remained undiminished. This reunion would bring profound change into his life.