Sena is a full-time housewife. Her father-in-law, who lives with them, is a pervert who watches anal-themed adult videos day and night. One day, her father-in-law begins to show an obsession with Sena's anal area. Unlike her bland husband, Sena is developed in her anal opening by her father-in-law's cunning techniques. Even when her husband is at home, her father-in-law's hands do not loosen. Sena screams in pleasure and guilt as her father-in-law's thick male member pierces her anal area...
