This is the story of a winner in life who traveled through time and struggled to the extreme to go home, only to find that his hometown was destroyed and then turned dark. Although the protagonist looks like a cold male god, he is actually somewhere between half crazy and completely crazy.
In the vast universe, where is your hometown?
Countless grains of sand in the Ganges have disappeared!
(I don't know which Qidian article I saw this in. I think it reflects the protagonist's experience very well)
The main alliance + the positive alliance, other world-saving ones may also be involved.