Sawada is an excellent department head, but because he is too focused on work, he is still a bachelor. This also affects Sawada's work as he cannot accept invitations to 'adult' places with clients. Therefore, he decides to seek the help of Mikami, his beautiful and voluptuous female employee. Hoping that Sawada will become a director to benefit from it, Mikami decides to involve Sawada in her sex education training...