King of Titans and Dragons - Chapter 46 - Metamorphosis

A world where God will grant abilities called Skills to those who come of age. The protagonist, bestowed with two skills, uses them and rises to an existence called a hero.

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

Due to rejection of the heart donated by her ex-boyfriend, she married him and supported him with her own blood for two years. After the rejection disappeared, he unexpectedly filed for divorce. She readily agreed and left, revealing to him how he gotten the heart. When he learned the truth, he was furious and disgusted with her.Five years later, she pretended to be dead and returned with their child, disguised as an ugly nanny...

Thrust into an enigmatic world born from bloodshed; venture inside its complexities, dark-side, and always changing nature. At the center, a boy; brought up by an exiled mage, steps into a life of independence. A test to try and change his life for the better after witnessing what war can do to a person. The walk towards finding a stable living gets toppled as a unique magical element awakens. Using people, toying with emotions, doing anything and everything to get what he wants, this is the life of the next Death Reaper. Mostly emotionless, life continues as questions about his state of mind and being remains clouded behind many personas.

This isn’t the story of a single man, it’s the story of a whole world. Read as the world builds itself from the ground up. Conspiracies, evil, the dark side of humanity. In addition, tis the start of a new age; the birth of monsters – a story depicting the tales of the first heroes and demons to ever exist.

The Wielder of Death Magic isn’t a typical fantasy. The heroes don’t summon forth power from heroes of old, here, the characters are the ones who make up the myths and legends for the next generation. Amidst the turmoil, Staxius, he lives on, watching and waiting as the world grows.