Yuno, a new employee, was assigned to the Third Sales Department, which specifically handles pleasure items (adult toys) for the night. Despite her plain appearance, Yuno is a closet nympho. Although she landed the job she dreamed of, her shy personality makes her ill-suited for the sales department. What will her first step as a working adult be? Mixed with anxiety and expectation, she is initially bewildered by the erotic acts she undergoes, but she is gradually developed into a total masochist.
