With her husband away, Shun's mother is left running the house alone. Even her son Hiroki can see that she looks tired, so he asks his friend if there's anything he can do for her. He is advised to give her a massage to relieve her fatigue. Hiroki immediately starts to give his mother a massage, and her firm upper arms, large breasts and firm waist are covered in oil and glisten erotically... Unable to hold back any longer, Hiroki reaches his hand down to his mother's crotch and massages her plump pubic mound with his fingertips. His mother, who has been feeling pent up desire because of her husband, doesn't resist her son's touch and accepts his sudden kiss...