i have one sexual fetish. that is, i want to see my wife, kanna, whom i love from the bottom of my heart, having sex with someone else—so-called cuckold desire. however, i absolutely can't stand the thought of her being cucked by a man. so, i asked sarina, a friend from college who is a lesbian, to have sex with my wife. at first, kanna was confused, but she gradually became addicted to the pleasure and revealed an orgasm i had never seen before. i felt intense excitement at that sight. but after that, my wife's behavior was somehow strange. kanna started trying to meet sarina even when i couldn't see her, and eventually she stopped listening to my words. and then, the two of them went on to have an extraordinary relationship…