In a world where humans and beasts coexist in a delicate balance, young tamers begin their journey upon receiving their first beasts as they enter the academy. Ethan, a young man with memories of a past life, possesses vast knowledge about these creatures and their mysteries. While his peers dream of fame and power, he seeks to understand the true meaning of evolution and the secret behind forgotten legends. However, hidden forces conspire in the shadows, and the fate of the world may rest upon his choices