I'm a God in Another World

Fang Lei, who could travel between two worlds, had somehow become a deity in another world. However, he was too weak.
But it was okay, Fang Lei had a way!
The King of Light, right? You think I don't have as many believers as you?
Just you wait, I have 7.5 billion potential believers in another world!
Therefore, the real world was led astray by Fang Lei…
PS: There is no supernatural power in the real world. The main character is the only deity!