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Throughout human history, entire civilizations have risen to unimaginable heights—possessing technologies far beyond even modern understanding—only to vanish without a trace.They did not fall to decay.They were erased.Every few centuries… sometimes every few thousand years… they come.No one knows where these beings originate. They arrive on Earth and issue a challenge—a one-on-one trial between individuals, civilization against civilization.Lose, and the entire civilization is wiped from existence.Win, and survival is granted… until the next cycle begins.For tens of thousands of years, a hidden organization has fought in the shadows, defying this cruel cycle. They interfere, manipulate, and sacrifice everything to prepare civilizations for the trials—training warriors capable of standing against the entities that end worlds.Morality is a luxury.Failure is extinction.And this time, the cycle has begun again.