MTL - Marshal, Please Calm Down - ~ Chapter 143

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

What should I do after passing through?

Mo Jun’s answer is:

Life will be meaningless if you don’t work hard to enjoy it.

Then play music, then dance.

(Note: This book is a colleague of Qin Shimingyue, classified as light novels, not historical texts.)

- Description from novelbuddy

After being awakened from their slumber, billions of people found themselves dispersed in various sealed crypts. Surrounded by earth, they each had only a shovel.

One day, I was summoned to this world.