Asano was forced to take responsibility for leaking information and was fired. The world was unkind to such a man, and he was unable to find another job, so he made ends meet by cleaning buildings. One day, his former workplace's building asked him to step in as a substitute for the person in charge who couldn't come. Asano frantically refused, but there was no response... Asano stepped into the familiar building with determination and began cleaning, but his former boss Nanami, who had just arrived at work, started to greet him, but stopped in her tracks. "Could it be... Asano?" Who would have thought that this reunion would greatly change the fate of both of them...