Eternal Cultivation of Alchemy by Snoring_Panda

From what I remember, the body in the "game" is the real one. This body also has a soul, without the memories of before the game. When the game started the soul of the player in the Central Continent took over the body, oppressing the original soul that can now control the body only when the player is offline.

As for where the body and soul come from, I have no idea. Unless it was created like presumed, I don't remember if it's was created or not. However, I do remember that when a player die, a new body is created by it's a basic body, similar to the people on the Central Continent.