Four years after marrying Kana, who works as an etiquette instructor, I was facing marital problems. I hadn't had sex with my wife for several months. However, when she told me that the men around her were looking at her with lustful eyes, I became abnormally excited. Realizing that she had a desire to be cuckolded, I showed her a cuckold site and tried to trick her. Kana pretended to have no interest, but after I went to sleep, she would secretly look at the site and masturbate. Convinced that she would go along with my sexual fetish, one day I invited her to a porn movie...