Reborn into the Land of Magic

Pulled from modern-day, the CEO of one of Earth's largest tech companies is reborn inside the body of a young child in a strange, ancient, divided world where era-defining figures from Earth's past are worshipped as Gods and control massive sections of territory using magic to accomplish feats unimaginable to what the history books describe. Can our reborn man from Earth present thrive like he did back home, or will the overpowering will of these God-Kings subjugate him?