Overpowered Villain Returnee in the Apocalypse - System is for Losers

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.