My wife, Kyoko, is a sadist. My new sex friend, Kurumi, is a masochist. Sex with these two people with completely opposite sexual preferences is just amazing! But one day, while I was training my sex friend, Kurumi, as usual, my wife, Kyoko, who knew everything, barged in...! Just when I thought she'd get angry, a threesome began. The strange experience of being dominated by Kyoko while simultaneously dominating Kurumi left me in a panic...