Manggemeuro Gisahoesaeng

An overworked game developer dies and is reincarnated as the weakest character in the game he created himself. Challenged by Jaeseokcheon, the ruler of the game universe, he must complete a series of quests to survive and prevent a second death. Epic battles between monsters, celestial beings with magic powers, and Jaeseokcheon ensue. In this tug-of-war between the omniscient game designer and the hidden mastermind ruler… Who will win?

(Source: WEBTOONS)