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 the situation where her boyfriend is 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 hurt her back during practice, but the pain got worse and she went to a chiropractic clinic with a famous chiropractor, Kito. - Kito can tell Mahiro's affected area and symptoms just by looking at her, and she immediately undergoes his treatment, but it gradually develops into sexual harassment...