Perhaps your classmate's memory is a bit wrong, because I didn't find any novel named Defiant Beast Trainer, but there is a novel named Defiant Poison Emperor, which is a fantasy novel. It tells the story of a peerless genius conquering the supreme Heaven's Favorite. Or you can ask your classmate if the name of the other novel is wrong. , I hope my answer can provide you with some help. If you need other recommendations, you can tell me at any time ~