The God's Return TGR

He was once named as The God of the Battlefield. He was once looked up to by every gamer all over the world. Yet, suddenly, he vanished.

If they only knew he was now working for his former enemy team as their exclusive experimentalist, what would be the people's reaction?

PS: I do not own the book cover. I couldn't find anymore fitting so I'm just gonna borrow it until I can create my own. Credits to the owner.