Chapter 1: Context

About thirty years ago, there was a worldwide war. People with different views battled for world domination. During the war, 4 major superpowers emerged. They were hailed as the strongest in the world and were called the "Shiten'nō". Today, each one rules over one of the four great Kingdoms: Mar, Rook, O and Hiss. There are many cities in those nations that govern themselves and have their own ways of life.