NPC's Domination

Betrayed after nearly completing an SSS-ranked World-quest, he died. But something unexpected happened. Instead of getting kicked out of the game, he received the message of having completed the quest. From that moment on he knew, his life wouldn't be normal anymore if one could still say that after having completed a world-quest.Then, having received an offer of the gaming company to be the creator of their newest to-be-built game world as an uploaded entity, he begins a new adventure with the end goal of having the dream of becoming the highest being in these worlds, so mighty that not even the game developers can do anything against him. He might even come back by his own, after getting trapped in the game.Let the fun begin!