History.

All this started a few hundred years ago. When the first photon engine's construction was done and a scientific theory became reality the dreams of humanity changed their focus from exploring the planet to exploring and concurring the vast universe. This seed of ambition was watered with the gains they received from the other planets of the solar system.

With the support of these resources, there was a new industrial revolution leading to the advancement of various technologies. In the beginning few years, there was a steady pace in overall human development. This development was not that smooth though, with the development of resources and technology there were obvious signs of friction among the various countries. This eventually led to the World War lll which brought unimaginable destruction, the result of the war was the foundation of the Earth Federation by the winning countries while the losing countries borders were shortened and swallowed by the winners, but this war was led by advanced weapons brought an irreparable damage to the ecosystem leading to a famine which lasted for almost 50 years. This also weakened humanity and the steady progress and development were struck in its cradle.

After huge struggles, they were able to regain the steady pace of development 60 years after the famine. This time they have learned their lesson from the previous experiences and hence with the joint authorization of the Earth Federation many rules and sanctions were declared such as restrictions on the army strength of each country was specified according to their land and resources and population, and a new space army corpse was established which recruited the best soldier all around the world and were responsible for the security of the solar system, they were equipped with the best equipment which was the crystallization of the human technology. Under their security, the Earth Federation established many colonies on the other planets of the solar system.

Without any further issues, there was a steady development. After developing for more than a century the human ambition focused its attention on the other galaxies. With the solar system as the base, they were ready to expand their exploration radius.

After such along time of preparation, the first interstellar spaceship carrying 200 space army corpse personnel was launched from the Uranus launch base. According to the scientists responsible for the launch and travel process of this spaceship it will take them six months to completely leave the solar system.

But this act of humans was far more than just exploring the universe. The moment they left the heliosphere there was an amazing scene the entire spaceship disappeared while all the crew members returned to Earth.

Before the Earth Federation had any chance of understanding the situation out of the 20billion human beings in the solar system 6billion disappeared out of air. This was a huge blow to the humanity since the 6 billion people who disappeared where of the age group 18 to 25. This was the working generation, in order to find this people out the space army corpse took action. But even with their continuous efforts for 2month and doing a carpet search of the entire solar system they still failed to find any clue about such a large population. This confused all the scientists in the world, even the spaceship crew who was returned to Earth didn't know what happened to them.

While humans were trying to cope up with this unknown danger another disaster struck as 6billion more people disappeared under the age group of 16 to 31. In just two months of time 12 the population was reduced from 20 billion to 16 billion. The disappearance of the most important workgroup of the population many facilities immediately went out of work. Many space colonies lost the main management resulting in huge commotion and panic. And the biggest loss was for the space corpse and the other countries army containing this young men and women.

Then again in one month 6billion more people disappeared, and the entire social order collapsed as the main authorities of the Earth Federation and the various countries were among this third batch. Now humanity was left with only the elderly who can't manage heavy workload and the children who were not yet trained to handle this things. The future of making was bleak, there was no one to maintain the social order, with the fall of the security system the dark side of the humanity was revealed. There were few people who retorted to black means to earn money and wealth.

This social unrest resulted in even more reduction of the population, from the remaining 2 billion more than 200 million people were dead.

This went on for more than a year until one day out of the disappeared people 2 billion people returned unexpectedly. But compared to the time when they left there were obvious changes among them, they were more stronger and cruel. In one fell swoop all those rebell who tried to gain power on the Earth were cleaned up with only a few fish escaping the net. After this mass cleansing they supported the falling humanity and reconstructed the social order.

But this time the social order was not as before where everyone was equal. Among the 2 billion most of them were just like follower. The main leader were Six teams, this teams made up for up to 1.3 billion people. Instead of saying them as a team they can be considered a huge company with noticeable heirarcy. After creating the social order this companies were established in different corners of the Earth and were well known as the six great clans. They were the Knight's guard company which was later known for its best gaurd's, the Great Esper clan and Mystic Clan known for their magical technologies and weapons, the Atlantis organization known for their water equipment, divers, ships, and spaceships, the beast clan known for their taming methods of wild beast, and the twin sun and moon temples known for their individual and joint martial arts and formations. Excpet for their forefront these six companies also had many other product they came along with from their unknown adventure.