The Queendom of Casuko is a gargantuan, orderly nation, ruled by Tamamo with an iron fist, and notable for its sprawling nuclear power plants, smutty television, and complete absence of social welfare. The hard-nosed, hard-working, cynical, devout population of 12.739 billion Casukoans 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 medium-sized, corrupt, well-organized government prioritizes Defense, with Industry, Law & Order, and Education also on the agenda, while International Aid and Social Policy receive no funds. It meets to discuss matters of state in the capital city of Yomeiri. The average income tax rate is 32.8%.

The frighteningly efficient Casukoan economy, worth a remarkable 1,394 trillion Mikons a year, is fairly diversified and led by the Arms Manufacturing industry, with significant contributions from Information Technology, Tourism, and Gambling. Average income is an impressive 109,468 Mikons, with the richest citizens earning 5.3 times as much as the poorest.

The weather in Yomeiri is always 'pigeons with a chance of droppings', bouncers at the door of the sweet shop warn five-year-olds not to cause trouble, seven-year-olds debate for weeks on the merits of the Oxford comma, and the banshee wail foretells skies of death. Crime, especially youth-related, is totally unknown, thanks to a capable police force and progressive social policies in education and welfare. Casuko's national animal is the Amaterasu and its national religion is Shintoism.

Casuko is ranked 119,760^th in the world and 4^th in Fate Waifu Alliance for Lowest Crime Rates, with 63.73 law-abiding acts per hour.