The amount of information in this sentence was so large that Anthony and the others looked at each other in confusion: "Go back? Where are you going back?"
In fact, everyone has already guessed, where do Titans come from?
Coming from the main plane, it is most likely to return to the main plane, and before the storm of faith came, Titan also conveyed a message through lightning: Thunder will eventually return.
So the Titans must want to return to the main plane, and some of Nigris even analyzed why.