Maki and Tetsugaku fell in love at work and got married. Six years have passed since they continued working at the same workplace after their marriage. Tetsugaku was promoted to sales manager and at first glance, things seemed to be going smoothly, but he was troubled by a sexless marriage with Maki. Soon after, Maki began an affair with Tetsugaku's subordinate, Saji. When Tetsugaku found out about this, he suddenly passed away. Unable to bear the fact of the affair, did Maki or Saji end it themselves? The truth is in the story, so try to uncover it for yourself.