There Is Obviously a Beast to Control, but the Host Wants to Do It by Himself

Passerby A: "Enter the beast master." Beast master: "Enter Lin Nan." This is a world where all the beast masters fight. Then Lin Nan, who traveled through time, unexpectedly obtained the "strongest beast master system". It was obviously caused by Lin Nan's failure to examine the questions carefully. Therefore, in this environment where everyone fights the beasts, Lin Nan must rise up to resist and become the brightest boy who can fight on his own. Who calls the system the strongest beast master system?