The Empire of Seiro is a mammoth, cultured nation, ruled by Empress Yuzuki with an iron fist, and renowned for its compulsory military service, disturbing lack of elderly people, and keen interest in outer space. The compassionate, cynical, humorless, devout population of 8.545 billion Seironese 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 relatively small, corrupt, moralistic, well-organized government juggles the competing demands of Law & Order, Industry, and Defense. It meets to discuss matters of state in the capital city of Shiro. Citizens pay a flat income tax of 31.3%.

The frighteningly efficient Seironese economy, worth a remarkable 1,517 trillion yen a year, is fairly diversified and led by the Arms Manufacturing industry, with major contributions from Information Technology, Tourism, and Basket Weaving. Black market activity is rampant. State-owned companies are common. Average income is an impressive 177,559 yen, with the richest citizens earning 5.8 times as much as the poorest.

The government single-handedly sustains the bunk bed market, pop stars who make it big overseas are hailed as economic heroes, Empress Yuzuki isn't a national brand, and politicians are battling inequality by declaring themselves better than everyone else. Crime, especially youth-related, is totally unknown, thanks to a capable police force and progressive social policies in education and welfare. Seiro's national animal is the rabbit, which is also the nation's favorite main course, and its national religion is Lunarism.

Seiro is ranked 237,647^th in the world and 151^st in The Order of the Grey Wardens for Largest Insurance Industry, scoring -5.16 on the Risk Expulsion Effectiveness Rating.