Since Kumiko was appointed as a section manager, KS Corporation has been doing well. Because of this, the company president, Sano, seems small in front of Kumiko. One night, on her way home, Kumiko notices a man following her, and she takes him into a public toilet and indulges in lewd acts. In the middle of this, she sees someone peeking at her through the mirror. Kumiko leaves as if nothing happ...