Wakoku

At present time, Wakoku is divided into 22 nations. They are fighting for rule on Wakoku in a civil war. It is also known as the origin of the Teigu, Murasame. Wakoku, itself, has advanced technology and are capable of forging Meihou, another name for Teigu-like weapons. The Elder's Class and the Ten Stars of Tenrou utilize Meihou as their primary weapons.

Nations in Wakoku
There are known 11 nations:
 * Soukai
 * Tenrou
 * Saryuu
 * Murasame
 * Raika
 * Hakurin
 * Sankai
 * Kuroshio
 * Bakufu
 * Suiran
 * Houju

Trivia

 * Wakoku is the modern reading for the name given to Japan in ancient China.