[A woman who looks serious is actually the most erotic! ] Only me and Mr. Yamagishi from general affairs in a quiet office. I thought I was the weak type, but we hit it off from trivial things! When I was secretly drinking in the office after work... Her eyes changed suddenly and I kissed her, and then I had raw sex in the office! I can't believe that Mr. Yamagishi was so lascivious...! Until the other employees come to work, Mr. Yamagishi and his wife, who have a ridiculous libido, will never find out, and they will have an office affair!