Is It Funny That I Became a Villain After Failing to Ascend?

A thousand years ago, the Calamity of World Destruction took place. Evil demons invaded, the world collapsed, the spiritual energy of heaven and earth dried up, and humanity could only struggle to survive. Thus began the Age of the End of Magic. A thousand years later, Chen Changjiu successfully survived his tribulation and ascended, but encountered a minor problem at the final moment: his path collapsed, and he died. When he opened his eyes again, he discovered that he had arrived on the eve of the Calamity of World Destruction. He had become the number one wastrel of the Northern Tang Dynasty. Facing the impending calamity, Chen Changjiu decided to save the world. But as the mysteries were gradually unraveled, he was shocked to discover that he seemed to be the chief villain who had triggered the Calamity of World Destruction!