One day, five years after I married my wife Kanna, I received a phone call from an unknown number. The caller was his former boss Oshima, who had once competed for the post of general manager. They started a new business trip service and wanted Kanna and I to try it out. Although there were past connections, I was relieved by Oshima's bright voice and readily agreed. Then, on the appointed day, it was supposed to be a pair esthetic session, but a partition was placed between me and Kanna, and only I was given a blindfold and headphones because it was supposed to be effective. Little did I know that my wife would be cuckolded right in front of me...