ROE-469 When I went home, my grandfather and mother were fucking. What I saw that day turned me into a 「mature woman lover」 for life―. Yoshinaga Taka.

I left my hometown to live in Tokyo and used the long holiday to return home for the first time in a while. My parents and grandfather live at home. After grandmother passed away, grandfather became depressed and half-bedridden, so mom takes care of him. Dad has no interest in the family and is always out. One day, I heard a strange voice coming from my grandfather's room. It sounded like the cries of an aroused stray cat. Curious, I quietly opened the shoji screen to look… Inside the room, there was my mother gasping as she let my grandfather suck her breasts, while he lovingly played with his own dick.