The Duchy of Ossulu is a titanic, orderly nation, ruled by Jr Cadet Seria with an iron fist, and remarkable for its zero percent divorce rate, otherworldly petting zoo, and lack of airports. The hard-nosed, hard-working, cynical, humorless, devout population of 12.688 billion Ossuluans are kept under strict control by the oppressive government, which measures its success by the nation's GDP and refers to individual citizens as "human resources."

The medium-sized, corrupt, moralistic, well-organized government juggles the competing demands of Defense, Industry, and Law & Order. It meets to discuss matters of state in the capital city of Risqué. Citizens pay a flat income tax of 76.7%.

The frighteningly efficient Ossuluan economy, worth a remarkable 3,084 trillion Silvens a year, is fairly diversified and mostly comprised of black market activity, especially in Arms Manufacturing, Information Technology, Retail, and Gambling. State-owned companies are reasonably common. Average income is an amazing 243,097 Silvens, but there is a significant disparity between incomes, with the richest 10% of citizens earning 687,178 per year while the poor average 68,803, a ratio of 10.0 to 1.

"Darwin's Disease" is a growing cause of death, Ossuluan dissenters are begging human rights groups to ignore them, the musical cognoscenti insist the national anthem just isn't the same without a double contrabass flute, and a large-scale revitalization of the education system is underway. Crime, especially youth-related, is totally unknown, thanks to a well-funded police force and progressive social policies in education and welfare. Ossulu's national animal is the AT Strapped Hound, which is also the nation's favorite main course.

Ossulu is ranked 3,178^th in the world and 2^nd in Eientei Gensokyo for Highest Unexpected Death Rate, scoring 187.19 on the Bus Surprisal Index.