In a world where there the land masses are five supercontinent size one. Of the five of them, there are four that are considered home to the four major races that exist.
*The first and oldest of the five supercontinent size landmass would be Ur. This is the one that belongs to the race known as Demons
*The second one is Nuna which would belong to the beast race
*The third one is Rodinia which would belong to the dragon race
*The four one is Pangaea which would belong to the human race
*The fifth and final one is Amasia which belongs to no race and is considered neutral ground between the four races. It is the landmass where the four races can all gather for various reasons to accomplish various things
Out of the four, there are three that variety seems to extend in an almost unknown amount of ways. Demons, Dragon, and Beast were three where claiming you were a member of that race was just your overall race. It had nothing to do with where you were from, what you were capable of doing, or even what you looked like. There could be two members of these three races and neither one of them would look at like in the slightest. However, they would both could still be considered members of the same race.
However, the fourth race was different as the only real difference between them was merely skin color. Other than that they were basically the same when compared to the other three races. If two members of the fourth race were put side by side it would be easy to tell they were from the same race. As again the only real difference between them would be their skin color. They also were considered one of the weakest races as well since they were considered the jack of all trades but masters of none. They were good at just about everything and anything they could get their hands on however that came with a downside. This fourth race was the human race.
The other races all had something they specialized in though it was at the cost of being horrible at something else though. Although because they specialized in one area they were naturally masters of their area where they did not ever have to practice or learn anything really. They just knew everything at master level to start with. Thus rather than starting at a novice they were naturally experts to start with. Though if every one of their race was a natural expert then the difference would be those that put in the effort to get even stronger and better at their one chosen field as a result of this.
Humans of course being jack of all trades that they were again did not suffer the downside of being over specialized in one area. As a result of this, they actually had to work their way up from being a novice in everything in the world where everyone else started as experts in their field. Thus why they were considered the weakest of the four races because they did not just know everything they need to know for their field naturally. So even a human that was considered a genius and master of their craft or field amongst other humans. They were only considered mere novices when compared to any other race that specialized in that field in general. The master level was basic of the basic for them while for humans it was the end of the road.
Another thing that added to humans being considered the weakest was that levels also existed in this world and since humans leveled evenly as they were jack of all trades. Their stats grew at a constant and steady rate however there was yet another trade off for this that they had. They would start out with extremely low stats at level 1 when compared to the other races. Demons, Dragons, and Beast they all started with master level stats to match their master level knowledge in their chosen field. Their growth was imbalanced as they only grew stronger truly in the areas that related to what their races were naturally good at. So while a low level dragon, demon, or beast might have to worry about a skilled human in their weakest area. Once they start leveling that difference would vanish as the natural higher stats would make up for the difference as all it would take is merely one wrong move for the human to be beaten.
Though the learning curve of human was the highest because they started out so far behind the other races to begin this was not even seen as a good thing at all. Though what the three other races did not know was that there was a hidden and very rare race skill that only humans had. One that did not appear all that often that was a master jack of all trades. One that specialized not in any one area but every area the same. This was the only thing that the skilled bestowed upon it user through. The ability to copy anything they have seen once already and enhanced growth stat where they still have a balance increase for each level they gain. Though the amount itself is no longer steady as it the amount they gain is their current level times of the number of different stats the races have which is five.