After decades of marriage to my beloved wife Maki, I no longer had the energy to satisfy her every day, and our half-hearted sex life left me increasingly anxious. Then Ozawa, an executive at one of our business partners, took me to a swingers' club he promised I would enjoy. Watching husbands offer their wives to other men awakened an intense new kink in me. I persuaded my wife to visit the club with me just once, but...