Large Mobile Cities created by humans to live after the earth atmosphere became too polluted to live, are called regios. A membrane of air that covers each city to protect any invasion of contaminants, is produced by the air-filter that sits above the legs of the cities. Each city is named after the Electronic Fairy that controls the Regios. Most Regios avoid Filth Monsters(aka Contaminoids) as much as possible but with the exception of one city, Glendan, which does the opposite as it constantly finds monsters.
There are two different kinds of cities; Academic Cities & General Cities.
- Academic Cities like Myath and Zuellni, are where students from different cities come to learn & study.
- General Cities are the main cities where most of the population live.
Due to a treaty, only Regios of the same type are allowed to have a match with each other.
- Proto-City Lance Shelled Glendan: The most powerful city in the world due to its regular encounters with Filth Monsters of all levels and was the birthplace of the Military Arts, which most other cities practice today. The Twelve Heaven's Blades are found here under the command of the Glendan Royal Family.
- Academic City Zuellni: A city governed by its Students Council President. This is where the manga/light novel/anime takes place. Its Electronic Fairy takes the shape of a pale blue, young girl.
- Academic City Gandoweria: A former city that was overrun by Pollutant Beasts not long after their victory over Zuellni two years ago. Its Electronic Fairy takes the form of an goat-like creature and is currently running amok as a Haikizoku .
- Sheniebel: The city Nina Antalk and Harley Sutton grew up in. It is currently the only city with the Fairy Copy System which is capable of making new Electronic Fairies. Like Glendan, Sheniebel also has a royal family, which Nina is the heiress of, as seen in the manga of Chrome Shelled Regios.
- Academic City Myath: Its Electronic Fairy takes the form of a red bird. In the anime, the military capabilities of this city are shown to be poor and perhaps even worse than that of Zuellni. No resistance was shown from the residents of the city when the city was attacked by a mature filth monster.
- Transport City Yoltem: According to the manga, this is the original home city of Mayshen Torinden, Mifi Rotten and Gerni Naruki. All roaming buses eventually return to Yoltem and most travelers will encounter it during their travels. Only its Electronic Fairy knows the current location of every regios.
- Trade City Santoburug: The city Kalian Loss and his sister Felli grew up in. Their family holds significant positions and weight in the city.
Roaming Buses
These are used for commuting between cities. It is also designed with the purpose of trade in mind. Since travelling outside of the cities are prone to the danger of attacks by Filth Monsters, a detour or a stop for several days are employed.
Source:Wikipedia