Ryoko had been secretly carrying on a forbidden relationship with her son for a long time, without her husband's knowledge. But the time had finally come to put an end to her immoral Kokoro. "It's no good to have such a rotten relationship that we can't face the world forever..." But her son said, "Mom... can you really say that and live without my dick?" Ryoko, who doted on her son's dick just as much as her son did, was conflicted. But her resolve was firm. "Let's definitely end this now!" This was the beginning of a long, long end that seemed to last forever for the two of them...