Becoming an NPC in a Certain Instance

[Infinite Flow · Wild Imagination · Dreamlike Fantasy] [Multiple Storylines] [Multiple Instances] After falling through a pixelated black hole into a small world, I endured one terrifying scenario after another, and finally got a System that could help me. Turns out, it was a System that had given up on everything. It said it was one of the main gods of this unfinished world, and that it had joined the game of its own free will. But I’d lost my memory and was just an ordinary person with a blank slate for a mind. How was I supposed to survive here? Everything ahead was shrouded in the mist of the unknown. And there really were huge clouds of mist, waiting for the protagonist to unravel their secrets and push the story forward. Across all those small worlds, one by one, they would claim their place, become a god at last, and return to the worlds they had once visited to give the people they had made promises to the answers they’d been waiting for. They would also return to every small world in their strongest form, personally enter the instances, and become an NPC who terrifies and toys with everyone... I am Xu Quanyang, a god from the living hell of the mortal realm...