Otherworldly Tamer [Weak-to-OP LitRPG]

Kael Morgo is a failure. Despite having a tamer class, the only creatures he can command are tiny, useless rock pebbles. In this world, at least. One day, he discovers that his latent powers had been sealed all along, and his Otherworldly class shows its true power. His power allows him to tame and command creatures of unimaginable strength. Armed with this newfound power and determined to prove himself, Kael sets out to reclaim his worth and rise above the people who looked down on him. But the creatures he sets out to control aren't going to relinquish their lives to just anyone.  Before he can prove anything to his family, or himself, he will have to prove his worth to the very monsters he has set out to control. Will he finally find his place in the world, or will he fall on the path to becoming the greatest tamer Ozoron has ever seen?