One day, he sprains his ankle and visits the nurse's office. Waiting for him there is the beautiful but somewhat dangerous health teacher, Riho-sensei. She approaches him under the pretense of treating him, but underneath her white coat she is hiding an extremely obscene, bold and extreme swimsuit...! "If you make a sound, your girlfriend might find out," she whispers with a grin, straddling a male student and showing off her breasts as she cums like a slut, just to satisfy her own sexual desires. Today, when Riho-sensei takes off her white coat, creampie instruction begins...!!