Monsters invaded and I was resurrected as a giant of light

Xu Ming is an ordinary ordinary person, but he suffers from an incurable disease. Before he dies, Xu Ming plans to go crazy.
He ordered a large number of "mysterious funeral" services online, intending to make a little joke with his family and friends after his death.
Unexpectedly, the joke turned out to be too big.
...Everyone in the world knows that Xu Ming was reincarnated from the Kingdom of Light in Nebula M78 and existed on Earth 30 million years ago. He is the first light in the world and the giant of the strongest light in the universe...
At first, people just dismissed it, but a hundred years later, a rift in time and space opened from the top of the earth, and countless monsters poured into the earth... Human beings gradually believed in Xu Ming's existence.
And he used the only bottle of resurrection energy that was extremely difficult to create, using Xu Ming as humanity's ultimate weapon, and humanity's last hope was resurrected.
…
[There is also a million-word completed work "Ultraman: Tiga Comes to the Heavens", you are welcome to read it. 】