In a world where humans and demons coexist, taming demons to battle, live, and go on adventures is commonplace, and academies for training tamers are hubs of talent. Zhang Wuji accidentally transmigrates to this world and gains help from a hint-giving System, which lets him learn the whereabouts of rare demons, how to capture them, and their hidden evolution paths. From then on, a legend who repeatedly works miracles with the System quietly rises within the Tamer Academy.
