I'm Really Just a Mortal

Travel through another world! A single thought of good and evil, a single thought of life and death. "Live on your knees or die standing. Which one will you choose?" Troubled times arise, and rivers and lakes quarrel. The dynasty was destroyed. When I saw a mysterious giant beast tens of thousands of feet high falling from the sky. There is no need to sigh for a good harvest. "On this heaven, What mysterious existence exists? "