Mysterious Resurgence, I Am Arbitrary for Eternity

"I am destined to be invincible in this world, and I will become a variable in the future. I will be the only one in eternity." "When the supernatural begins to revive, evil ghosts appear again, all living beings suffer, and the moment the world calls your name, you will appear in the world, exorcise ghosts and evil, save people and promote good deeds." This is the story of two people who stood at the top and ended the age of supernatural beings.