MTL - Twenty Seven Years - Chapter 394 undercover

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

I died a heroic, powerful, male Archmage… so why did I wake up as a sixteen-year-old girl?!Theo’s last memory is of a glorious, failed last stand. His next is a beeping hospital machine—and a terrifyingly handsome guy he’s pretty sure is a demon calling him “princess.”Now, he’s Thea Montrose, youngest daughter of a powerful family in a world run on magi-tech and corporate espionage. Between navigating floating cars, enduring his new mom’s hugs, and figuring out the horrifyingly complex mechanics of using the bathroom, Theo has his hands full.But his new family is hiding secrets, and their rivals play for keeps. Good thing this spoiled heiress’s body now holds the soul of an ancient wizard. They wanted the real Thea back? They’re about to get way more than they bargained for.He failed to save his old world from an apocalypse—now he just might save this one (and finally figure out how this bra works).

Cole is a novel author.

He enjoys writing novels and even reading other's works as well.

But that's just it.

Reading and writing novels.

Those are the only things Cole enjoyed in his whole life.

And as the time goes by, even doing those are becoming boring for him.

But then one day, Cole recieved a mail!

The mail said that his work has been chosen!

In a contest? No.

Cole's novel was chosen by a Higher Being to make it a reality!

“What kind of bullshit is this?”

“Whoever sent this must have few loose screws in their head.”

Though, Cole didn't took the mail seriously.

“Huh?”

That is until he was sent in to his own novel!

Cole became Raven Obadiah of his novel!

Who is Raven Obadiah?

No Idea! He's just an Extra in the novel!

...Or is he really just an Extra?

Others treated disease to save person, he treated disease to steal heart.

The Frost Goddess was deeply captivated by him. The gentle and kind beautiful teacher was completely enchanted by him. Even the cold and beautiful female assassin melted quietly because of him.

Competing in medical skills? He was the one who treated the Godly Doctor. Competing with backgrounds? Leaders rushed to him. What? You actually wanted to compete with him in a match for match? Looking at the gentle girl beside him, Tang Yu had a headache as he said, “Beautiful girl, how did you fall in love with me?”

- Description from Novelupdates