Aoi, who was having trouble living after her husband was fired from the company, came to Ozawa's company for an interview. It was a clerical recruitment, but Ozawa suggested to Aoi to work as a secretary. The salary is doubled, but the mistress contract is included. Even if she is a mistress, she does not have a physical relationship, only kisses. Aoi accepts such conditions for her livelihood. However, Aoi, who felt obscene and pleasurable like the mating of a and a, broke her promise and sought a physical relationship with Ozawa.