The expression of the invigilator turned serious. Although he was just facing against a soldier in the Casted Soul Stage, his opponent was already able to make him feel sufficiently threatened. Although one's soul power would experience a qualitative change upon the casting of one's Heroic Soul, one's body would not experience too huge of a progression. Looking at it from another angle, the majority of the reasons why mankind was still unable to dominate the hyperdimension were that the bodies of humans were too weak. Intelligence was mankind's invincible talent. However, this was in direct opposition to their fleshly bodies. This was the rule of the universe. If not, the life form known as humans would be able to destroy the world in an extremely short amount of time.