My Future Self Travels to the Past to Save the World

In Mingzhou Continent, there is a prophecy: the sun and moon will be in the same sky, the devil will be resurrected, and the continent will perish. This day has finally come, and I have seen it with my own eyes in the future, The strange sun and moon hang together in the sky. The ferocious demon breaks through the space barrier and descends on the mainland. The land is filled with sorrow and blood flows... A mysterious man appeared in front of me and handed me the magical golden cup. He said that I could travel to the past to change everything, prevent the emergence of demons, and restore peace to the continent.