Sawada is an excellent department head, but because he is too focused on his work, he is still a virgin. It also affected Sawada's work as he could not accept invitations to go to adult-looking places with customers. So he decided to ask for help from Mikami, his beautiful employee with big breasts. Because she wanted Sawada to become a director to gain benefits, Mikami decided to let Sawada participate in her sex training course.