The Principality of Soustuyseria is a massive, socially progressive nation, notable for its barren, inhospitable landscape, zero percent divorce rate, and spontaneously combusting cars. The hard-working, democratic population of 3.863 billion Soustuyseria live in a state of perpetual fear, as a complete breakdown of social order has led to the rise of order through biker gangs.

The relatively small, pro-business government juggles the competing demands of Administration, Public Transport, and Welfare. Citizens pay a flat income tax of 9.4%.

The strong Soustuyseria economy, worth 175 trillion precreases a year, is fairly diversified and led by the Uranium Mining industry, with significant contributions from Soda Sales, Gambling, and Pizza Delivery. Average income is 45,472 precreases, but there is an enormous disparity between incomes, with the richest 10% of citizens earning 247,930 per year while the poor average 4,275, a ratio of 58.0 to 1.

The government has started a campaign to crack down on road rage and encourage alternate means of commuting, in life full of care there is no time to stop and stare, academics are questioning the quality of the nation's newly-reprinted science textbooks, and the government extracts trade concessions from poor nations in exchange for humanitarian aid. Crime is moderate. Soustuyseria's national animal is the orizuru, which teeters on the brink of extinction due to widespread deforestation.

Soustuyseria is ranked 280,053^rd in the world and 60^th in Eientei Gensokyo for Most Advanced Defense Forces, scoring 612.49 on the Total War Preparedness Rating.