The Demon Republic of Demon Girl is a massive, efficient nation, ruled by Yuko Yoshida with an iron fist, and notable for its zero percent divorce rate, disturbing lack of elderly people, and vat-grown people. The hard-nosed, cynical, humorless population of 4.3 billion Demons are ruled without fear or favor by a psychotic dictator, who outlaws just about everything and refers to the populace as "my little playthings."

The large, corrupt, well-organized government juggles the competing demands of Industry, Administration, and Education. It meets to discuss matters of state in the capital city of Delsgade. The average income tax rate is 93.6%, and even higher for the wealthy.

The frighteningly efficient Demon Girlian economy, worth 983 trillion Cursed Silvers a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. However, for those in the know, there is an enormous, deeply entrenched, broadly diversified black market in Information Technology, Arms Manufacturing, Book Publishing, and Uranium Mining. The private sector mostly consists of enterprising ten-year-olds selling lemonade on the sidewalk, but the government is looking at stamping this out. Average income is an amazing 228,785 Cursed Silvers, and distributed extremely evenly, with little difference between the richest and poorest citizens.

Bleach is the nation's most common pesticide, above Demon Girl there is only sky and the fear of the unknown, oracles predict landslide victories for Yuko Yoshida for the next 50 years, and Yuko Yoshida often plays real life games of Tower Defense against hordes of angry villagers. Crime is totally unknown, thanks to a capable police force and progressive social policies in education and welfare. Demon Girl's national animal is the Demon, which teeters on the brink of extinction due to widespread deforestation, and its national religion is Dark Clan.

Demon Girl is ranked 193,533^rd in the world and 2,803^rd in the Pacific for Most Primitive, scoring -78.4 on the Scary Big Number Scale.