The humans hunted down every dragon in the world, dragon connected their power with humans. The world was created by the dragon god. After the dragon god created the world, he split into 7 dragons, who are the sons/daughters of the dragon god. The 7 dragons are called superior dragons, and the land where humans and dragons live is called the land of miracles. When dragons shared their power and wisdom with humans, they misused the power and, out of greed, they started killing dragons and used the valuable items the dragon possessed, like its heart was used for boosting the magic of the humans; one heart was enough to boost five to seven humans. Dragons shared their power with humans, and the humans who got dragons' blessings are called Lighters.
The five types of fighters:
The Lighters - people who got the dragon's blessing to use magic.
The Hunters - people who hunt the dragons and eat or use the dragons' parts to become stronger.
Soulers - people with natural talent in magic, they don't need borrowed power.
The Elites, who are half dragon and half human, are considered nobles because they have the dragon's blood running through their veins.
The Technos - people use advanced technologies for fighting
Humans and dragons are still in a war for control of the land of miracles. A boy was born to normal middle-class humans; his name is Rin. Rin was a gifted child who was Souler. His parents died in the middle of a fight between humans and dragons, and he is living with his uncle.