Naoto and Minami joined the company at the same time. They often compete with each other, always like shadow and light, but in the end Naoto chose to give up and get married. Minami had secretly loved him for a long time, so since then, she threw herself into work, keeping herself busy to forget the lost feeling deep in her heart. This time Minami was assigned a very urgent project. She trusted Naoto and assigned him to compile documents by next week. As a result, he had to work overtime, missing the last train. Seeing this, Minami invited Naoto to her house to drink. There, Naoto shared about his troubled marriage and rumors of him having an affair with Minami. Minami also admitted her feelings for Naoto, and Naoto felt the same, he loved her but didn't think he deserved her. And that night, they made love many times...