Collecting Doomsday

I, the World Will, am saving the world! I'm called Patient Zero, an NPC in a dark game. This is the story of me, with my foolish system and guiding sister, traversing different worlds, collecting doomsday elements, and returning home. The completely whitewashed Holy Grail War, the chaos of gods and demons in the ancient sky, generals like clouds in the unparalleled Three Kingdoms, the unpredictable Heavenly Dao in the primordial Fengshen, the ten-thousand-year cycle in Mass Effect, and the infinite space that completely fails to make people understand the meaning of life...