Reincarnate: Hero or Villain

As Riven Gray is reborn into a world of magic and elements, he faces the same questions that troubled him in his past life. Will he still be heartless, or can he find a new path? With a special system that lets him have others' powers for himself, Riven must choose: use his powers to aid a world overrun by monsters and help the dwindling human population, or let his selfishness win and condemn the world to even more destruction? Can he break the cycle and find a new purpose? The fate of this world rests in his hands, as he uses the system to survive and dominate.