Reiko visits her son's couple's house to celebrate the birth of their first grandson. The son and his wife welcomed Reiko and talked about the reunion after a long absence. That night, my son happens to see his mother bathing. My son got excited about his mother's naked body. At midnight, I eagerly aspired to act for the first time in a long time with my wife who had been absent. However, my wife rejected me this time as well. The heightened son's libido searched for an outlet. I sneaked into my mother's bedroom, gently turned over the futon, and began to groping my mother's crotch. The horny part that gradually gets moist. The son took the plunge and fired at his mother's hair. The mother, who wiped off the semen that was seen to leave, was worried about her son's eccentricity. The next day, the wife goes out, and the son, who is alone with his mother, hugs his mother and begins to caress him roughly. A mother who refuses, but cannot overcome her son's power and tries to calm her son with her mouth and hands. The last line was kept, but my mother remembered the woman who had forgotten as her son sought hard. At midnight, my mother, who can't sleep, quietly begins to comfort herself. A heartbeat that is getting faster little by little. Self-finger that becomes fierce with the desire to satisfy the woman. A ripe body that Iku cannot be satisfied with many times. The son appears in front of the mother as if the figure was seen through. The mother, who already has a body to accept, cannot completely reject her son and is pierced by a hard son stick. The joy that filled the vagina wrapped my mother in pleasure and instantly reached the climax ...