Raised as the eldest daughter in a salaryman household, Nagisa was constantly occupied with taking care of her younger brothers until she graduated from university and began living on her own. Because of this, she had far less personal time than her siblings and never even had her own room. Unable to masturbate or relieve stress in private, she repeatedly broke curfew and sneaked out at night. Through her part-time job at a cabaret club, she met her future husband and impulsively decided to marry him. However, married life turned out nothing like she had imagined, leaving her stuck in a barely tolerable, stressful existence. Her intimacy with her husband gradually faded, and the network of clients she built at the cabaret naturally evolved into a list of potential sex partners.