It has been three years since Nanami started sexually treating her son. At first, I helped my son retreat to his room and continue masturbating, feeling dangerous. Of course, I knew it was wrong, but I convinced myself that it was just a temporary measure until my son returned to society. Her husband seemed to have doubts about their relationship, although he did not understand the problem clearly. I told myself that I had to end this relationship as soon as possible, but my son kept asking to sell his body without listening to Nanami's persuasion. That was how the sloppy relationship continued.