Following a Hundred Years of Cultivation, I'm dying Before I Got Cheats - Chapter 879 - : Swordgrass, Guardian Spirit, Demons, and

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.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

[Tower Defense & Dungeon Attack RPG] I saw the ending to the game no one was able to clear.

But, when I came to my senses, I was inside of the game.

In fact, I was in the tutorial stage, a place where strategy was impossible.

“I’ll clear this bullsh*t game no matter what…!”

My name is Joo In-gong. The name that my parents gave me meant ‘protagonist’ of the world. Really?

A Pill Emperor of his generation was set up by a traitor.

Since then, the world lost a Qingyun Zi and gained an invincible silkpants.

Once again, walking the Great Dao of Alchemy.

How can I defy the heavens . . . with the medicine in my hands!