My Disciples are All Invincible Monsters

Transmigrated into a blind man, he successfully awakened an invincible system. However, to his dismay, the system led him into a world ravaged by monsters, where he must wait 500 years before it activates. Just as he was about to lose hope, a monkey demon appeared before him, seeking to become his disciple! To safely survive the 500-year waiting for the system to activate, Chu Xuan Yan decides to use this monkey, teaching it the terrifying powers of the Hell Whale and the self-determination magical arts, ensuring the monkey is fearless. Years later, this monkey becomes…

(Source:AnimePlanet)