In this world, the continent of Fuluo is a land in the endless ocean where elves live.
For thousands of years, elves who believe that they are the sons of the World have worshiped the World Tree and created different cultures. From the establishment of villages to the establishment of countries, they have thrived in the only continent in the sea.
In the summer of this year, Rico came to Jilan, a country in the south of Fuluo Continent where the new lord ascended the throne, and became the assistant of the lord's adjutant [Mirror]... Therefore, this story can start from there.
The bond of contract sealed in the soul, a memory that can never be erased. In the tens of millions of years of elves' history, the past covered by time, the disputes over different blood colors, the magic of summoning natural elements, everything begins here.