Discovery of female boss and department head having an affair

Since joining the company, Yano has been attracted to his boss - Yokota-san, but he does not have the courage to confess to her. By chance, he discovers Yokota and the department head are secretly having an affair. This is his chance, he immediately seizes this opportunity to make Yokota do as he pleases, making her work overtime so that they can have an affair in the office.

Everything goes as planned, but he feels that something is not right. It seems like he is not in control of the situation and is completely like a prey being toyed with...