"Hinako" married her husband, who was a colleague at work. Her husband, "Makoto," seemed to be living a life without any worries, being kind and earning a good salary. However, "Hinako" had only one complaint: she had never cummed during sex with her husband. "Hinako" felt sorry for her husband and had buried that complaint deep in her heart... One day, she was invited on a consolation trip by the department head and colleagues of the dispatch company. Of all things, she would experience her first vaginal cum on that trip...