Stripped of her idol persona, Kasumi Riko experiences her first time being penetrated by a huge penis, and her cervix is opened, leading to vaginal orgasm! SP Kasumi Riko SSIS-336

Riko Kasumi is going to take on the challenge of "uterine development"! A host of male actors with huge penises will work together to develop her vagina, constantly stimulating her cervix and bringing her to multiple orgasms! Simultaneously, internal development will take place; just having a vibrator pressed against her abdomen is enough to make her squirt wildly!