I have a fetish. It's the desire to see my beloved wife Riho having sex with someone else, a cuckold fetish. However, I can't stand the thought of her being taken by a man. So, I asked my lesbian friend from college, Waka, to take care of her. At first, Riho was hesitant, but she gradually got into it and showed me an orgasm I'd never seen before. I was incredibly aroused. But something about my wife's behavior afterward seemed off. Riho was trying to meet Waka even when I wasn't around. Gradually, she started ignoring me, and the two of them developed a forbidden relationship...