Upon the fourth retrospection at the Oyon Ruins, Casio had seen the existence of Xiadu within the memories of the old man from the Extreme Fist. That was an ancient battlefield, a land saturated with corpses and blood, where inhuman, sinful monsters walked proudly upon the earth, advancing in formation. And there, in the center of the monstrous array, robed in black, was Xiadu, seemingly a dark sovereign, escorted like royalty.
With relentless momentum, the monster legion marched forward until they met resistance! The ones blocking their path were two experts of the Saint Fist realm—one was the corpse's original owner from Extreme Fist, and the other was Tyrant Fist. They charged into the formation, tearing through it as if breaking bamboo, assaulting with the aim of challenging and killing Xiadu!
And the outcome, Casio, viewing from the vantage point of the future, had already witnessed.