Feeling completely defeated by life's obstacles, Mirai sought to end his own life. But fate had other plans. He was saved by a guardian angel named Nasse, who offered him an incredible proposition - to become the new god. However, to attain the prestigious title, Mirai must outshine 12 other contenders in a heated competition that must be won within 999 days. With this unexpected opportunity, Mirai's life is transformed from its darkest point to an otherworldly battleground for the grandest reward.