Psyqyia Stories

In a world once ruled by demons, the military used children with demons fused into their souls called psychs in order to save it by sealing themselves into pillars using the universal treasures. After a hundred years the pillars collapse and the world is once again in danger of being ruled by demons. Will the psychs, now reincarnated seal themselves and the fate of demon rule? or will they choose another path that will most likely lead to the world's destruction?