The Human race, one consisting of twelve Emperor Ranks, was a force to reckon with. They were really strong in all aspects ranging from their economy to their military.
Despite such strength, they were still not the overlords of the world because if they tried to be, the other races would ally together and suppress them.
The suppression would cause severe losses such as death of many Emperor Ranks and there was even a possibility of the death of their Supreme Rank, which would result in them getting stripped off of their main race status.
The consequences were severe but it didn't mean they couldn't dream about it.
The humans were a race that had survived the harshest of times. Even though after the Late Chaotic Era all sentient beings were wiped out, due to their vast intellect and wisdom, the humans had still survived.