I Am Only Immortal

Others come to me for fortune-telling. I beg you to believe in science. If science is enough, you can go from human to immortal step by step. When the spiritual energy is revived, I will protect the world. When the underworld was first established, I came to find the king of hell. Heaven revives, I open the list of gods. Riding a sword and riding the wind, between heaven and earth, I am the only immortal in the universe.