Having left my hometown and living in Tokyo, I returned to my parents' home for the first time in a long while on vacation. My parents and grandfather live at home. After my grandmother passed away, my mother is caring for my grandfather who is depressed and has no energy, but my father has no interest in family life and is always out and about. One day, a sound like a cat in heat came from my grandfather's room. Curious, I quietly opened the shoji screen. Then...in the room, I saw my vulgar mother having her breasts sucked and lovingly devouring my grandfather's cock...
