A few years after starting to live with my son and his wife, thanks to my son's suggestion, we were living comfortably without any inconveniences. However, there was one thing that bothered me. It was that Ayako, my son's wife, always lived without wearing any underwear. As I secretly peeked at her vagina that was occasionally visible through the gap in her miniskirt, my withered old penis began to regain its vigor. Oh, how shameless! Could it be that Ayako is seducing me!? Forgive me, son, but I've reached my limit of restraint!