The third NTR drama in which she is made to cum so many times that she recoils without even making a sound, using the secret techniques of a chiropractor and her boyfriend being next to her! Mahiro, who has been working hard at rhythmic gymnastics, tried her best to keep it a secret from those around her that she injured her back during practice, but the pain became so severe that she and him went to a chiropractic clinic where a famous chiropractor, Kito, was working. Kito can tell Mahiro's affected area and symptoms just by looking at him.