Alderan Zorvir

On the earth where we have lived together for thousands of years, working together to build civilization, it has now become a field of mass slaughter by the Legion of Demon Belzebur and his cronies. They have forcibly torn open the veil of the world, blinded by their hunger for the accumulation of human evil—a truly dark side. Of course, positive energy also arrives, bringing hope to those who oppose injustice. One chosen individual with SSS-rank positive power rose up to fight and successfully killed Demon Belzebur, sinking him into the Mariana Trench. Three years later, the emergence of S-rank beings began sporadically, turning them into predators of their own kind. Now, a legendary SSS-rank being has come to depopulate them. Is this happening again because of Belzebur's absence? what might causing this?