Mother Toyonaga's first son

My wife has been away for several months. I live in agony every day. At that time, I returned to my parents' home. It becomes a pleasure day after a long time. On the way to the kitchen at night, I accidentally saw the naked body of my mother in the bath. I saw the glossy skin, white and big butt. That night, I was excited about my mother's body, but I tried to invite my wife and act. But when I was clear, I slipped away from my bedroom and went to my mother's sleeping room...