Konomi, who has been working at a major company for three years, is beautiful, good at her job, and has high expectations from those around her. However, Konomi makes a rare mistake and ends up working overtime late into the night with her senior boss. There's no way she can concentrate on her work when she sees the sexy body of her usually neat and tidy junior colleague... In the office late at night, she has sex with the slutty office lady over and over again until she runs out of sperm.