The Blue Archive of -Yakumo- is a colossal, socially progressive nation, renowned for its burgeoning otter population. The quiet, industrious population of 3.452 billion -Yakumo-ians enjoy extensive civil rights and enjoy a level of social equality free from the usual accompanying government corruption.

The medium-sized, liberal, socially-minded government juggles the competing demands of Law & Order, Defense, and Healthcare. The average income tax rate is 23.1%, but much higher for the wealthy.

The sizeable but underdeveloped -Yakumo-ian economy, worth 96.1 trillion won a year, is quite specialized and dominated by the Trout Farming industry, with significant contributions from Basket Weaving, Gambling, and Retail. Black market activity is notable. State-owned companies are common. Average income is 27,830 won, and distributed extremely evenly, with little difference between the richest and poorest citizens.

Crime is well under control, thanks to a capable police force and progressive social policies in education and welfare. -Yakumo-'s national animal is the otter.

-Yakumo- is ranked 286,863^rd in the world and 1,215^th in Artificial Solar System for Most Scientifically Advanced, scoring -33.17 on the Kurzweil Singularity Index.