Underworld Player - Chapter 38: How to Earn Experience

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Transform into Divine Dragon and dominate the world!
He is the only Divine Dragon in the sea who founded an underwater Dragon Palace.
With Crawfish Soldiers and Crab Generals as his followers, wild sharks and gigantic octopuses as his subordinates, he is the dragon that rules the city.

- Description from Novelupdates

In the aftermath of apocalyptic event, a man rises above the others to lead an era.

With threat beyond the stars, as Supreme Beings of otherworldly star system watches over as Destiny and Fate work their way, an era of Gods descended upon Earth

And in his rise, lies a terrifying secret. Read how he rises above it all, through all the complicated love life, his determination to push through his own fate and destiny and the Will that pushes him forward.

With all of this, could the Fate that was written be overturned? And will he truly rise to the top and survive?

A great battle for the fate of the Universe began.

This is the story of Lord Shadow.

One day, the stuntman found that acquaintances and unfamiliar people were looking for him through various channels. Even someone from a certain department of the country came—

Team Leader of an abilities group: Comrade Jian Hua, on behalf of the nation, I want to tell you about a newly discovered world secret.

Protagonist: What?

Team Leader of an abilities group: In fact, our world is a book.

Protagonist: WTF?

Team Leader of an abilities group: And you will be the last villain of the seven volume novel series.

Protagonist: …

See title for the protagonist’s mood.

Book Character A: You and I are good childhood friends. Shouldn’t I be the white moonlight in your heart?

Protagonist: …

Book Character B: I treated you kindly, so shouldn’t you trust me completely?

Protagonist: …

Book Character C: I’m so considerate while busy. As good friends, shouldn’t we be rolling around on first base?

Protagonist: …

See title for the protagonist’s mood.

- Description from Novelupdates