It's been three years since Nanami started sexually treating her son. It all started when he helped his son, who stayed in the room and continued to masturbate, with a sense of crisis. Knowing that it was a bad thing, he convinced himself that it was a temporary measure until his son returned to society. Although the husband has not touched the core, he seems to be skeptical about the relationship between the two. I tell myself that I should break this relationship as soon as possible, but my son just asks for a body without listening to Nanami's persuasion. Then, the sloppy relationship continued with slurping ...