Will of D. and the Void Century

My theory of the Will of D is this:

First of all, lets take a look back on the lines that does have any connection to the Void Century and the Will of D. 

"They seem to have held great power once, but the information about this kingdom has been carefully erased. As they knew of their imminent defeat by the alliance that would later be called the World Government, they carved the truth into stone, to give to the future. Those are the Poneglyphs that still exist today...!!!"   - Professor Clover

"Because they have the blood of the Creators in their veins... Eight hundred years ago, a group of twenty Kings... formed a mighty organization known as the World Government."  -Pappug

I believe that hundreds of years ago, there was this two civilizations called the Void Century. The Void Century was divided in two: The people who created the ancient weapon Pluton and the ancestors of Poseidon (Shirahoshi) and the people who are the descendants of characters that has the Will of D. I believe that the people who inherited the Will of D. were also the descendants of the giants (such as Jaguar D. Saul) and the people who created the ancient weapon are the descendants of the Fishman race and the Sea Kings. 

These two civilizations before lived in harmony and peace in their country. Each civilization have 20 kings in which they have committed an agreement that they will own those other countries where innocent people live. But there came a time where the two civilizations were imbued with jealousy and greed. And because of that, their came a war in which they fought for the land and countries they've owned. All those years of fighting lead to new inventions like the Devil Fruits, the Ancient Weapon Pluton. It also lead to the first ancestor of the Poseidon race.

800 years ago, the people who created the Ancient Weapon Pluton created the WORLD GOVERNMENT. In which they tried to bring people from other countries to believe in their righteousness, and that will further bring the fact that people keep on criticizing the D people. 

Later on, the D people knew about this and they created the Devil Fruits to also counteract the owning of the people who created the Ancient Weapon Pluton and the first ancestor of the Poseidon race. They keep on battling til it lead to huge massacre to both sides. 

The war ended, and there were only a few people who remained alive. The survivors were a few number of the D people and and a lot of the people who created the World Government, thus they one who won the battle was the people who created the World Government. An because of that, people keep on believing that the World Government as the righteous one, and the one they should count on. Leaving the survivors of the D people scattered all over the world. After 50 years, the World Government found something incredible on the grave of some of the D people, and that was the Devil Fruits. That's why Devil Fruits was scattered all over the world and although the D people created the Devil Fruits, the World Government still have some Devil Fruits of their own. 

Now that the battle ended, the Ancient Weapon Pluton were on the hands of the Fishman race and some of the people who did not follow the World Government. They know that if they will hide it, the World Government will know the truth and they will be killed. But they still believe in their dignity and instincts, so they created the poneglyphs that will lead to the Pluton weapon. So, the World Government knew about this and they tried to kill the Fishman race. The reamaining survivors stayed in the sea with some huge hatred to the World Government. 

The remaining D people preached to people who has'nt been yet in the hands of the World Government, what really happened. Their hatred to the World Government  rose to expectations and this came the invention of pirates. They fought the World Government and they also attacked the Fishman race, in which really is innocent. This is where the Fishman people hated all the humans and they created the rule that they will not help a human. 

100 years since the start of the story, the Poseidon or the princess mermaid who has the power to command the Sea Kings, decided to end the hatred and prejudice among humans. Many Fishman disagreed to that decision but they were later later convinced by Joyboy. Thus, they've decided to create the biggest man-made ship known, the Ark Noah. After finishing Noah, they are now ready on going to Reverie. But, intelligence leaked, and the World Government knew about this. So they tried to intercept this decision made by the Fishman race, and killed the Joyboy. And because of that, the Fishman people lost hope because Joyboy was the only one who can command the Sea Kings. So they've decided to only leave Noah in the Sea Floor. 

So due to the latest chapter (chapter 649), the Fishman people's hopes grew. I believe they would now count on Joyboy (Shirahoshi) to end the miserable ties and prejudice among humans and Fishman. 

I hope you like my theory! ^^