Like thunder from clear skies, our protagonist suddenly finds himself in an unknown world, with an unfamiliar body, and facing off a group of certainly not friendly armed men.
From a wanderer to a king to a god, this is the story of an ambitious demon, whose exploits will affect the whole world – no race nor place will remain untouched in his wake, not even the burning Hells of demons or the pristine Heavens of gods
— If you enjoyed the fiction, please rate and review so I could also improve myself and the story
There's webtoon of that, I recommend trying that first. The story really peak in the last hundred chapter including the epilogue imo