Once, the world was one.
One day, a mysterious phenomenon — later known as “Janken” — split the world and its people according to the “rock-paper-scissors” system.
Thus were born the three great nations: the Rock Nation, the Paper Nation, and the Scissor Nation.
Legend has it that in the year 500 after Janken, the dreaded “Great War” will erupt — and only the strongest Nation will survive.