The development history of the Earth was once about the contention of the three races, the Human, the Elf, and the Keen, to take over valuable resources because they believe that, with the unique ability bestowed, they are the most elite races that rule this world. But under the protection and guidance of the Omnis, they gradually changed their minds, living together peacefully and organizing trade, creating an Earth with flourishing living creatures. Therefore, The Earth is known as the Land of Superior Civilization.