Shock! I Am the Savior

I was a high school student, and on an ordinary night, I met a mysterious messenger, Yuan Ri, and saw a world I had never seen before. Yuanri said that everything I saw was fake, the real world had long since turned into hell, and I was the one who could reverse everything, but I just had to pay the price. I don't believe it. I'm just dreaming. I'm just an ordinary high school student. Can I reverse everything? Save the world? Pay the price, I don't believe it. Until that picture appeared in front of my eyes, it turned out to be true. Yuanji did not lie to me. Yuanji and I officially embarked on the path of finding a way to reverse it and the price of reversal...