In 20XX, the parliament passed the XXX OK bill as a last resort to combating the declining birthrate. It was an insane way that XX would not be charged with a crime as long as it was intended to get a woman to get pregnant. On the day the bill finally comes into effect, office lady Nanami heads to her workplace despite her heart's worries... Even the kind bosses, colleagues, and even the subordinates they trust have become demons who have exposed their sexual desires! Office XXX will explode from the day the OK bill was enacted! One after the other, the men devour Nanami's body!