The seemingly serious employee, Makoto, who's been with the company for three years, secretly looks at photos of women's anuses on his phone during a break. Suddenly, his boss appears and exposes his fetish. After being shamed and ridiculed in the company chat, and even dumped by his girlfriend, Makoto directs his mounting anger towards his boss's wife, Rio. Captivated by Rio's beautiful face and proportionally beautiful anus, Makoto becomes obsessed, repeatedly thrusting into her raw pussy while staring at her exquisite anus with fervent devotion...