One day, he sprained his ankle and went to the nurse's office. There he meets a beautiful but slightly dangerous nurse, Ms. Riho. She pretended to treat him, but underneath her white coat she hid a lewd, daring, and titillating bathing suit! "If you make a sound, your girlfriend will find out." She grinned and whispered, straddling a male student and exposing her breasts purely for her own sexual gratification.