Yuno, a new employee, was assigned to the Third Sales Department. The Third Sales Department was in charge of handling pleasure items (adult toys) that are especially useful at night. Yuno has a plain face but is secretly a pervert. Although she achieved her dream of getting a job, her shy personality makes her seem unsuited to the sales department. What will become of her first steps as a working adult? Mixed with anxiety and anticipation, she is initially bewildered by the more erotic things that happen to her than she expected, but she is gradually developed into a masochist.