It was about half a year ago that the physical relationship between Yumi and her son began. I was surprised that I was witnessed masturbation and was pushed down halfway. Since then, Yumi has been repeating incest as requested by her son and slurping, but decides to cut off the relationship, saying, "If nothing is done, my son will be ruined." But it was too late. When Yumi marks the end of the relationship, her son's attitude suddenly changes, and he treats his mother coldly. Yumi who can't stand such everyday goes to her son by herself.