The word portio I heard from a friend in the neighborhood can't get out of my head. I thought that the reason I wasn't satisfied with sex with her husband was because I was frigid. However, I found out that there is a portio erogenous zone that women feel most in the depths of the uterus. One day, I met Sugiura-kun, her sweetheart from school days. When I had sex with Sugiura-kun when I was a student, it was too big to fit in. If it's Sugiura-kun's dick, it might reach the portio... when I think about it, her body is hot and numb...
