The Galactic Ryūjin Empire of Derenus is a colossal, socially progressive nation, ruled by Ryūjin Emperor Kashikaru Maximus with an even hand, and notable for its compulsory military service, public floggings, and stringent health and safety legislation. The compassionate population of 2.543 billion Derenese have some civil rights, but not too many, enjoy the freedom to spend their money however they like, to a point, and look forward to their next free and open election, to be held on an as-yet unannounced date.

The large, corrupt government juggles the competing demands of Administration, Industry, and Education. It meets to discuss matters of state in the capital city of Kōtei-To. The average income tax rate is 90.5%, and even higher for the wealthy.

The frighteningly efficient Derenese economy, worth 372 trillion Holy Christian Sedaris a year, is led by the Information Technology industry, with significant contributions from Tourism, Book Publishing, and Arms Manufacturing. State-owned companies are common. Average income is an impressive 146,575 Holy Christian Sedaris, and distributed extremely evenly, with little difference between the richest and poorest citizens.

Armed war-criminals gain asylum if deemed 'fabulous' enough, midnight pizza breaks are common among the work-from-home population, sales of disinfectant wipes have skyrocketed, and some achieve retirement and some have retirement thrust upon them. Crime is totally unknown, thanks to a well-funded police force and progressive social policies in education and welfare. Derenus's national animal is the Beanie Cat, which frolics freely in the nation's many lush forests, and its national religion is The Shinto Sect of Christo-Judaislam.

Derenus is ranked 20,250^th in the world and 1^st in Imperium of Christian Nations for Most Eco-Friendly Governments, scoring 3,318.95 on the Dolphin Recycling Awareness Index.