The cervix is Pandora's box. (JUY-593)

I couldn't forget the term "cervix" after hearing it from a friend. I always thought my husband's inability to satisfy me sexually was due to some kind of illness. But this time, I learned that deep within the uterus lies the cervix, a highly sensitive erogenous zone for women. One day, I reunited with my student-era lover, Sugiura. Back then, when we tried to have sex, he was too big to penetrate. The thought of Sugiura's penis reaching my cervix made me feel hot...