[Apocalypse + people eating people + light religious elements; proceed with caution if that's not your thing]
Resources are exhausted, ethics have collapsed, and monsters run rampant. This battered world no longer has any reason to exist.
Humanity took to the streets and used its last strength to beg the supreme being:
“Lord! Please grant us death!”
The god of destruction and death, who had slept for billions of years, was finally awakened.
For this world in its twilight years, it would bring eternal peace.