Ember Reborn: The Flame That Defied Fate - Chapter 4: A Price on Power -

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!

Every story needs a great evil for the hero or heroine to defeat…

The wicked stepmother who torments Cinderella.

The fearsome dragon who kidnaps the princess.

The fake rich daughter who bullies the real.

An evil demon queen hell bent on destroying the world.

Yet sometimes these villains defeat the heroes.

Agent 214 has been tasked to enter these dangerous worlds and eliminate these evil villainesses before they have the chance to win.

But why is every story a little different than what it first seems?

Witnessing her boyfriend cheating on her with her bestie, Shiyao was so angry that she went to a pub for fun and met a man, who was really a piece of work. After a crazy night she fled away, but was embarrassed to know that the man she slept with was her boss You Ze.
Jesus, give her a break!

- Description from Novelupdates

After dumping the Obsessive Tyrant, I was entangled######[Sickly Obsessive Maxim Sinclair VS Cunning Little Fox Summer Lowell]President of Sinclair Group, Maxim Sinclair, is ruthless, unfeeling, and notoriously uninterested in women, never rumored to be with any woman.However, only he knows that the woman bold enough to come undercover beside him, achieving her goal before fleeing, has haunted his sleepless nights for an entire year!Until that day, she unexpectedly returns to the country, parachuting in as the design director of a rival company...“Director Lowell, you used me and threw me away. Did I agree to this?”“Feelings fade, naturally things end. Why must President Sinclair pursue relentlessly?”“Summer Lowell, let me tell you, even if I have to go to hell, I will take you with me!”...People gasp in sympathy, assuming this reckless woman is doomed to a fate worse than death.Little do they know, he has long laid an inescapable net, waiting for her to walk right into it.“I will trap you in a place where only I can see you, forever!”———[The Heroine is Career-Oriented, The Hero is Pathologically Obsessive, Known as the Jealous King of the Demon Capital!]