The fourth installment of the popular series features exclusive appearance by Sayama Ai! Every night, she hears intense moans and the passionate, beastly sounds of flesh colliding. Her stepfather, though old, has a strong sex drive and takes her stepmother every night. A lifelong stud. In comparison, her husband's sex is bland. The frustrated housewife's heart gradually shifts to her stepfather. She wants to be taken like that. Unable to suppress her desires, she goes to her stepfather on her dangerous days...
