Namaiki Kinpatsu Twinte Bakunyuu Ojou-sama o Mesubuta Atsukai de Haramase Kai Suru Seikatsu

The modern era. Having lost their ability to mate and produce offspring, men are useless.
You, the protagonist, attend an academy where a man-hating rich bitch named Ririka rules
supreme the school cast like some kind of Empress and shoves it in your face as a bully.

One day, the government certifies you as a male who still has breeding capabilities and
you are given the right to have sex with whoever, whenever and however you please.

The tables have turned, roles reversed...
It is now Ririka's turn to be humiliated with no regard to human rights or law!
You have the power, and she will bow down before you... Grovelling at your feet.
Show her your graciousness and slam that d*ck through her virgin p*ssy!!

Society will thank you for your magnificent contribution.

[From DLsite English]