Nanako, who works at a tutoring center that specializes in teaching Ko○mo, came to Tokyo and lived in the dormitory where she works for several years. One day, she received a request from a family to live in and teach Ko○mo, and Nanako gladly accepted. However, the child living in the family was a precocious brat, and instead of teaching her, he took advantage of her Nanako to play dirty pranks on Nanako . Nanako tried to teach her, but...