According to the History of the Leon Kingdom, all humans carried dormant ancestral genes from ancient super-races. They could evolve by awakening them. These dormant powers would come alive only when the body grew strong enough to support them, which typically only happened when a tamer reached the Gold Rank.
At that level, the tamer's soul refined their body crazily, increasing every single aspect of their being, from strength, agility, stamina to endurance, resilience, and even perception.
There were ways to bypass it, but not everyone could afford them. Only those born into rich and influential noble families, nurtured by powerful beast tamers with love and endless resources, could afford it.
Ray, however, had managed the impossible depending on his on lonesome.
Because he was crazy enough, brazen enough, and lucky enough, he had achieved at peak Iron Rank what tamers typically only achieved at Gold Rank!
