ROE-524 When I went home, my grandfather and mother were fucking. What I saw that day turned me into a lifelong 「mature woman lover」―. Minami Nakajima

Having left my hometown and living in a university dormitory, I returned to my parents' house for the first time in a long time during my vacation.My parents and grandfather live at home.After my grandmother passed away, my mother is caring for my grandfather, who is depressed and half bedridden.My father has no interest in family life and spends all his time going out.One day, a strange voice came from my grandfather's room.That was unmistakably the voice of a female.Curious, I quietly opened the shoji screen.Then...in the room, there was a very vulgar image of my mother, who was having her breasts sucked and seemed to be loving my grandfather's cock...