The Phantom Thief of Yoshizawa Kasumi is a colossal, efficient nation, ruled by Yoshizawa Kasumi with a fair hand, and notable for its museums and concert halls, keen interest in outer space, and triple-decker prams. The compassionate, hard-working, democratic, cheerful, devout population of 8.759 billion Yoshizawa Kasumians 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, outspoken government juggles the competing demands of Industry, Education, and Administration. It meets to discuss matters of state in the capital city of Valenoire. The average income tax rate is 94.7%.

The frighteningly efficient Yoshizawa Kasumian economy, worth a remarkable 2,635 trillion yen a year, is broadly diversified and led by the Tourism industry, with significant contributions from Information Technology, Retail, and Book Publishing. Average income is an amazing 300,921 yen, and evenly distributed, with the richest citizens earning only 2.2 times as much as the poorest.

All the playground's a stage for Yoshizawa Kasumian schoolchildren, builders across Yoshizawa Kasumi are blocked up with orders for new public loos, Yoshizawa Kasumi successfully hosted the Phantom Thieves Olympics, and laser-wielding robots are taking aim at human hearts. Crime is totally unknown. Yoshizawa Kasumi's national animal is the falcon, which soars majestically through the nation's famously clear skies, and its national religion is Violetism.

Yoshizawa Kasumi is ranked 3,486^th in the world and 1^st in Phantom Thieves for Lowest Crime Rates, with 125.91 law-abiding acts per hour.