Overpowered Villain Returnee in the Apocalypse – System is for Losers

Summary:

The Demon Lord was as strong as a fly.
So when I swatted him away after sleeping in on the morning of the fight.
The world trembled and the goddess descended.
“Please… Please just fucking go back. I don’t want to die.”
And sent me and the hero back to Earth.
Except she had taken away all my powers, and…
[Welcome to the Earth’s Apocalypse – Scenario 1 is currently in progress]
[Congratulations, you have been chosen by the Strongest Dragon God system, would you like to accept?]
HELL. NO.
A system is for losers.
……………………………………………………………