The ultimate sex method devised by sex therapist Professor Y, who has aroused the 'climax power' in numerous women! This method, by accessing the prostate, can greatly enhance sensitivity and provide an orgasm unlike any experienced before. This time, we decided to let AIKA, who has no experience with the prostate, experience Professor Y's sex method and develop her prostate! AIKA will feel more intensely than ever, undoubtedly reaching full erection as she collapses!