The Conspiracy Theory of Nina Watari is a massive, environmentally stunning nation, remarkable for its ritual sacrifices, sprawling nuclear power plants, and punitive income tax rates. The compassionate, devout population of 1.16 billion Ninas are fiercely patriotic and enjoy great social equality; they tend to view other, more capitalist countries as somewhat immoral and corrupt.

The enormous government juggles the competing demands of Education, Administration, and Spirituality. It meets to discuss matters of state in the capital city of Asama-jouesan. The average income tax rate is 73.8%, and even higher for the wealthy.

The sizeable but inefficient Nina economy, worth 44.0 trillion clams a year, is quite specialized and led by the Cheese Exports industry, with major contributions from Book Publishing, Woodchip Exports, and Automobile Manufacturing. State-owned companies are reasonably common. Average income is 37,964 clams, and evenly distributed, with the richest citizens earning only 2.4 times as much as the poorest.

Leader toils in solitude while relatives party on a remote tropical island, wars of expansion are described as "peacekeeping operations", the wearing and manufacture of fur apparel is banned, and the people elect the Supreme Court justices directly. Crime is totally unknown, thanks to a very well-funded police force and progressive social policies in education and welfare. Nina Watari's national animal is the shen, which frolics freely in the nation's many lush forests.

Nina Watari is ranked 281,295^th in the world and 29^th in Eientei Gensokyo for Largest Trout Fishing Sector, scoring -6.13 on the Nemo Depletion Efficiency Index.