Genshin Impact: The Grand Stage

A lone actor from Earth have died in a accident. But mysteriously the actor’s soul has crossed over into Teyvat, the world of Genshin Impact.
Facing the crisis of the dangerous world in front of him, he found that in his hand is a mysterious mask allowing him to gain power beyond one’s imagination.
So the lone actor made his debut in the grand stage known as Teyvat but will he continue to be an actor, imitating other characters all his life or will he go beyond that?