Luta

Currency is a system of money in common use, especially for people in a nation, to be exchanged for goods and services.

Overview
The currency used in the northern part of the world is called "Luta" (ルタ) and consists of coins made of different metals, each one having different worth.

Trivia

 * The denominations of luta are the same as currency.
 * The ranking system that the Adventurer's Guild uses is based on the different colors of luta, with blue being the lowest and gold being the highest.