MC fell into hell. Spent 10,000 yrs there and became king of hell. He went back to earth because he misses kimchi jigae and earth life. When he came back, it was only 5 yrs later. Gates opened in earth. System. Players. MC is OP but his powers were sealed by the "Gaia system" when he came back to earth. Now he's starting from lvl 1 again. He uses demon authority. Absorb infernal energy. VS Demon order who wants to turn earth to hell.
Player Who Returned 10,000 Years Later