I am a 41-year-old single child and an ordinary salaryman. Since getting married, I've lived quite seriously, but this year I ended up having a physical relationship with Keiko-san, my wife's mom friend who lives next to our apartment complex... Knowing that if it's found out during our family gatherings everything will be over, yet I can't seem to escape the pleasure of once-a-month, two-hour raw sex for some time...
