Joukyuu Seishi Chakushou Gimuka!?

Superior Gene Management Law

A society in which a law has been enacted requiring lower-class women to have sex immediately upon ovulation and begin procreation.

That day, Aioi Hana ovulated during class and ended up having sex with Mizuchi Shinjiro, the upper class of the class, in front of all her classmates...!

Feeling the pleasure of being a female for the first time in front of her childhood friend with whom she has feelings, things gradually become awkward between her and her childhood friend, and after that she is impregnated again and again at times when she is most likely to get pregnant...!?

Every scene is impregnation sex! An unprecedentedly dense and perverse story of getting pregnant begins!