In the year 2100, after the world enters a severe population collapse crisis, all kinds of strange diseases targeting humanity emerge one after another, including ghoul disease and giant disease.
At last, the human race unites out of fear of extinction. Yet all efforts to undo the damage seem inadequate, and amid all kinds of social welfare programs, immersive gaming becomes a measure of last resort.
During this time, humanity also discovers something horrifying: they are not the only inhabitants of this world.
Then a game called Final Concept, claiming to offer humanity the truth and hope, takes center stage in history…
