Natsu Igarashi is in agony at her first Portio experience! A professional portio therapist has awakened the erogenous zone located deep within the cervix! She writhes in agony and convulses from the intense pleasure that wells up from the depths of her body, and climaxes! Even if she cums, she can't stop squirting and bucking as she has a follow-up orgasm! Please take a look at Natsu Igarashi's disturbed appearance as the pleasure of Portio spreads throughout her whole body!