The Demon Republic of Demon Girl is a massive, cultured nation, ruled by Yuko Yoshida with an iron fist, and remarkable for its vat-grown people, free-roaming dinosaurs, and rampant corporate plagiarism. The hard-nosed, hard-working, cynical, humorless population of 4.294 billion Demons are ruled by a mostly-benevolent dictator, who grants the populace the freedom to live their own lives but watches carefully for anyone to slip up.

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. Citizens pay a flat income tax of 92.8%.

The frighteningly efficient Demon Girlian economy, worth 974 trillion Cursed Silvers a year, is broadly diversified and mostly comprised of black market activity, especially in Information Technology, Arms Manufacturing, Book Publishing, and Uranium Mining. Average income is an amazing 226,905 Cursed Silvers, with the richest citizens earning 7.3 times as much as the poorest.

Citizens are grown in vats, the only position a woman can hold is baby-maker, bands of paramedics walk the streets looking for suspicious medical activity, and fan-made edits of old films have seen a sudden jump in quality. 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 115,911^th in the world and 1,763^rd in the Pacific for Largest Insurance Industry, scoring 1,632.61 on the Risk Expulsion Effectiveness Rating.