45-year-old Kanae Hashida leads a busy daily life taking care of her NEET son and working part-time. Her husband frequently travels for work, leaving her feeling lonely during his long absences. One day, while temporarily returning home for lunch, her son sneaks up on her as she rests. Staring intently at her back and hips, he can no longer restrain himself...! How will Kanae respond to her son's growing desire this evening?