The ultimate sex method devised by sex therapist Y, who has evoked the "power of climax" in many women! - This method increases the sensitivity by accessing the portio and can give you an climax that you would not normally feel. - This time, we decided to develop a portio by having AIKA, who has never experienced a portio, experience the Y-style sex method! - AIKA feels more than usual and collapses, and there is no doubt that he will have a full erection!