The Cosplayer of Yuji Koi is a titanic, environmentally stunning nation, ruled by Yuji Koi with a fair hand, and remarkable for its museums and concert halls, daily referendums, and absence of drug laws. The compassionate, democratic, devout population of 13.709 billion Yuji Koians hold their civil and political rights very dear, although the wealthy and those in business tend to be viewed with suspicion.

The medium-sized, liberal government juggles the competing demands of Education, Industry, and Welfare. It meets to discuss matters of state in the capital city of Nagoya. The average income tax rate is 43.5%, but much higher for the wealthy.

The powerhouse Yuji Koian economy, worth a remarkable 1,203 trillion Ryōs a year, is dominated by the Trout Farming industry, with significant contributions from Information Technology, Retail, and Tourism. State-owned companies are reasonably common. Average income is 87,752 Ryōs, and evenly distributed, with the richest citizens earning only 2.2 times as much as the poorest.

Much of Yuji Koi's computer network is controlled by a rampant artificial intelligence, the Museum of Blackacrean War Crimes is located on "Blackacre Did Nothing Wrong Avenue", international tensions are high as Yuji Koi threatens any government with the audacity to arrest its citizens, and Jennifer Government is a bestseller. Crime is totally unknown. Yuji Koi's national animal is the peacock, which frolics freely in the nation's many lush forests, and its national religion is Buddhism.

Yuji Koi is ranked 37,404^th in the world and 1^st in Owari for Most Eco-Friendly Governments, scoring 2,377.44 on the Dolphin Recycling Awareness Index.