The AU includes the city-states of Atlantis and Mu, the former one of the largest� fairy cities in existance. Mu is a small city-state that mostly farms fish. Atlantis is located in the bottom of the Marianas Trench in the Pacific ocean. It is unique as it is the only place you can find Water Elves and Sprites.� Mu is located at the top of the Marianas trench. The two states trade amongst each other daily and share a currency, the Scella.
Atlantis is the site of the highest-security prison in existance, the JFCF, or Joint Fairy Correctional Facility. The Joint comes from the fact that criminals from all Fairy countries go there.