The Law of Equivalent Exchange is the most fundamental law for Alchemists, one of the Six Great Classes. The advent of this law shattered the traditional "strongest rules" dynamic on this continent. It inspired hope in the weak, offering them the alluring prospect of becoming strong. Consequently, this law rightfully became the most fundamental and, simultaneously, the supreme survival law across the entire Yowein Continent.
The Six Great Classes led to the unexpected rise of the Kayne Empire on the Yowein Continent. These outcasts, once driven away by the Mantai People and Vero People, managed to cultivate and develop in the barren lands their former kin deemed uninhabitable, forming their own empire.
The sixth-generation King Kayne, at the very moment Alchemists first stepped onto the stage of history, felt his ambition surge. With a grand wave of his hand, he passionately recounted to his subjects the suffering their ancestors had endured.
