Chihiro hurts her leg during track and field practice. At her mother's suggestion, she visits a chiropractor who is known for his skill in the neighborhood. The chiropractor is gentle, but Chihiro notices the lewd gaze he is looking at as if licking her whole body. She feels something is off about the treatment she receives for the first time. His fingers reach her breasts, buttocks, and private parts. Something is clearly wrong, but the shy girl is unable to say anything. Without realizing, the development of her body continues...she naturally accepts the suspicious equipment and oil massages. After being made sensitive to the extreme, all that remains is for her to succumb to the erotic chiropractor's cock...