The quiet-looking ones can be unbelievably filthy. Mami may be the plainly dressed only woman in her department, but she knows exactly how to seduce a man. Hirai, the office's biggest playboy, has a girlfriend yet casually hits on Mami and takes her home, convinced she will be an easy lay. Instead, she takes complete control. Smirking, she asks, “Has your girlfriend never done this to you?” then licks him all over and works his mouth and cock at the same time. What should have been a one-time fuck becomes a sticky, addictive affair he cannot escape.