Living in Tokyo away from my hometown, I returned home for the first time in a long while during a long holiday. My parents and grandfather live there. My mother is caring for my grandfather, who has been semi-bedridden since my grandmother passed away. My father has no interest in the family and is always out. One day, a strange sound leaked from my grandfather's room. It sounded like a stray cat in heat. Curious, I quietly opened the paper door. Inside, I saw my vulgar mother moaning while my grandfather devoured her breasts, her hands lovingly fondling his cock...