The Terminally Ill Young Master is the Mad Dog of the Underworld - Chapter 263

Giles transmigrated to a world where everyone practiced beast-taming, and he was adopted by the owner of a beast-taming arena from a young. However, Giles could only run errands and do basic chores since he didn’t have any talent for beast-taming.

One day, the arena owner had to go on a long trip, so he entrusted Giles with the management of the arena.

Faced with a bunch of baby beasts waiting to be fed, the inexperienced Giles could only tell them about the stories that he’d heard from his past life. [Pet Beast Guru Duck finished listening to “The Ugly Duckling”, evolved into an “Eight-winged Swan Beast”!] [Pet Beast Beetle Bug finished listening to “Godzilla”, evolved to learn “Ultra Heat Beam”!] [Pet Beast Lil Ape finished listening to “King Kong”, evolved into an “Invincible King Kong Beast”!] [Pet Beast Green Haired Dog finished listening to “Greek Mythology”, evolved into a “Cerberus”!] Even that rock pet beast in the corner.

After listening to Giles telling the story of “Journey to the West”, the rock split open and evolved into the Ancient God-tier pet beast, “Heavenly Sage Sun Wukong”!

When the arena owner returned, he was stunned, I told you to take care of the arena, and you trained them all to become Divine Beasts?!

In a peaceful, utopian Earth, a young man is born cursed by the will of the heavens. One day, he awakens… and uncovers the hidden world of the High Humans—the most powerful beings on the planet. His superpower? A rare support ability with healing powers… or is it? From that moment on, a healer who devours lives to grow stronger, just like the worst demons, is born. *** This is a story about superpowers in a distant future, where Earth hides unimaginable secrets. It’s also a journey across universes, filled with battles and discoveries. The protagonist isn’t a genius or a trained warrior. He’s just an ordinary man who faced dark times and watched his life be consumed by the abyss. But now, he has a chance to change everything. Step by step, he will learn why to fight—and how to survive.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Octavius, misled by friends, embarks on a quest to clear his father's name, ultimately facing a tragic end with his sister.Their journey results in devastating loss, leaving him powerless and yearning for revenge against those who harmed his family. Spirits offer him a chance to reincarnate, but he refuses, saying;“What’s the point of a new life if I keep running from my problems”The entities are taken aback by his unwavering decision, having never encountered a spirit who refuses to escape their troubled past. They warn him about the evil being that now resides in his old body, but that only motivates him. He believed In the saying - to defeat a monster, you have to be twice as monstrous.Embracing his fate as The Phantom's Gambit, they traverse the shadowy path of retribution, their identities blur, secrets unravel, and the line between savior and monster fades.This is a tale of darkness and redemption, where justice is a blade, and revenge is the only way forward.