ROE-431 · When I Returned Home, My Grandfather and Mother Were Having Sex: That Day Changed Me Into a Mature Woman Lover Forever - Sae Tsubasa

I, who was living alone in a dormitory near school, returned to my parents' house for the first time in a while. My parents and grandfather live in my parents' house. Since my grandfather's wife passed away, he has been bedridden, and my mother was taking care of him. My grandfather would call my mother in a voice that was almost inaudible, asking her to take care of him. One night, a strange sound leaked from my grandfather's room. It sounded like a sweet woman's voice mixed with a groaning sound. Curious, I quietly opened the shoji screen. Then... there was my mother, whose breasts were being sucked on by my grandfather and who was moaning happily...