At midnight on January 1, 2333, a bizarre phenomenon appeared around the world simultaneously: a huge blood-red countdown appeared in the sky, set at 100 days. Governments panicked, and no weapons had any effect on the phenomenon. On the day the countdown ended, a cold voice rang out in the minds of every human being:
“The Supernatural Game is now underway. Each country will randomly select one Chosen One to represent it in a supernatural dungeon. If the Chosen One dies, their country will select another, until no one remains to choose. Completing a dungeon grants rewards to both the Chosen One and all citizens of their country. Anyone who refuses to participate will have their entire country wiped out.”