Ayumi Miura is invited by her mother-in-law who wants her son-in-law's big dick all the time.

Ayumi's husband is away on a business trip overseas for half a year, and during that time she lives with her daughter and her husband, but the aching pain in her body just won't subside, and Ayumi indulges in masturbation thinking about her husband.One day, Ayumi finds out that her son-in-law, Tetsuya, has a big dick. hand…. Ayumi is her ``replacement for the girl who won't be with me'' and uses her lewd body to play with his extremely thick cock. Unable to bear the obscene appearance of his stepmother, who was once a race queen, Tetsuya explodes his pent-up sexual desire... *The contents may differ depending on the distribution method. Special feature