Returning to my hometown, I discovered that my grandfather and mother were together. What I saw that day made me a lifelong nymphomaniac. (Honami Hazuki ROE-366)

I lived in the school dormitory and went back to my hometown during a long holiday. My parents and grandfather lived there. My grandmother had passed away a year ago, and my grandfather was devastated, so Mimi had been taking care of him. My father, on the other hand, was completely indifferent to his family and always wandered around. One night, I heard strange noises coming from my grandfather's room. Was it a stray cat? It sounded like that. Curiosity led me to quietly open the paper door. And there it was… in the room, my grandfather was suckling at my mother's nipple, while my mother was lovingly stroking my grandfather's penis…