Haruki finally manages to get a job in a company where she is assigned to an unfamiliar department known as the "sexual desire processing department." The job description she is told is outrageous: female employees use their bodies to relieve the stress and sexual desires of male employees. She can't quit because she needs to send money to her parents, and as she receives the sperm of salarymen, who have become thick from daily fatigue, on her breasts, lips, and even vagina, Haruki's body is developed into something obscene and she is reduced to a sex slave office lady...