Since hundreds of thousands of years ago, the Newton Continent was inhabited by various creatures other than humans. There were three races as strong as the human race on the Newton Continent. The three types of animals were the demonic type, the half-demon human type, and the elf type.

However, during these few years, the strength of the three types of creatures had surpassed that of humans, and the elf type became the most robust breed in the Newton Continent. Each being established an Empire to mark their territory, and the Newton Continent had long since been divided into three regions.

All kinds of creatures can only occupy their part, except for the half-demon human type; they are free to live in any environment except the elves' domain.

Human-type creatures were the weakest on the Newton Continent. They had the largest territory, and three great Empires occupied each territory ruled by the mortal.

For the type of elves, they had two Empires that controlled the northern and so