Read I Pick Up Trash in the Apocalypse manhua.
The male antagonist is a Demon Sovereign with the power to obliterate the heavens and the earth. If he conquers the final city, the entire continent will fall under his rule. The heroine of this city is equally powerful, having also reached the verge of godhood.
On this fateful day, their battle shook the very heavens and earth. But suddenly, countless thunderbolts rained down from the sky. In an instant, the entire continent—and even the entire planet—was reduced to a post-apocalyptic wasteland.
When the male lead awakens, he finds that his cultivation has been halved, dropping him to the Foundation Establishment stage. With no other option, he sets out on a journey through the ruins, gradually rebuilding his strength step by step.
