This world is home to four tribes including Mitora( ミトラ) 、Yama( ヤーマ) 、Kushiti( クシティ) 、Sobani( ソバニ) There is a mysterious object called The Remnant, which dates back to the ancient times. People do not know who made these remnants and when… But they have long derived mighty power from The Remnant for their survival.
However, the exceedingly great power has prompted gradual spatial distortion of this world. It is hard to say when the people were divided into two groups: Dominant and Dominated. They are then plunged into an endless warfare.
