The Protectorate of Maruyama is a titanic, cultured nation, ruled by Aya Maruyama with an even hand, and renowned for its complete lack of prisons, infamous sell-swords, and unlimited-speed roads. The hard-nosed, hard-working population of 16.636 billion Maruyamen are either ruled by a sleek, efficient government or a conglomerate of multinational corporations; it's difficult to tell which.

The relatively small government juggles the competing demands of Education, Industry, and Healthcare. It meets to discuss matters of state in the capital city of Shimokitayama. Citizens pay a flat income tax of 13.5%.

The frighteningly efficient Maruyaman economy, worth a remarkable 2,014 trillion Yen a year, is broadly diversified and led by the Retail industry, with major contributions from Information Technology, Tourism, and Book Publishing. Average income is an impressive 121,122 Yen, with the richest citizens earning 6.9 times as much as the poorest.

Earthquake sirens are a leading cause of hearing loss, whenever pilots have to bail out the government bails out their company, lawyers turn down litigation cases and corporate work in order to focus on lucrative public defence work, and scientists regularly clone human beings for research purposes. Crime, especially youth-related, is a serious problem, perhaps because of the country's complete lack of prisons. Maruyama's national animal is the swan, which frolics freely in the nation's many lush forests.

Maruyama is ranked 9,080^th in the world and 10^th in Gensokyo for Most Rebellious Youth, scoring 8 on the Stark-Dean Displacement Index.