In this ancient and mysterious world, those who wield the power of soul contracts are known as beast tamers. They form contracts with all kinds of spirit beasts, growing and fighting together. The bond between a beast tamer and their spirit beast not only makes the beast stronger, but also grants the tamer a variety of abilities, turning them into a warrior who protects their home.
An ordinary boy unexpectedly comes into possession of a strange stone tablet. The rune stone not only grants him the ability to discern information about spirit beasts, but also reveals a secret in his bloodline that no one knows about. From then on, the ordinary boy embarks on the path of a beast tamer. He has no idea where the tablet really came from, but soon discovers that it is closely tied to his fate. His journey is full of challenges and unexpected encounters: from power struggles within his family to forming contracts with powerful spirit beasts, from exploring ancient ruins to uncovering the secrets of the world. Little by little, he unravels the mystery of his origins and becomes caught up in the battle over the world’s destiny.
