Worm (Parahumans #1) - Chapter 256: Scarab 25.5

Lu Yan has traveled to a peculiar world where the entire world would undergo a version update every once in a while.He has witnessed the once-flourishing metropolis replaced by an ancient and authentic Immortal World and been forced to work for a vicious shopkeeper.Luckily, he is the only one who has the ability to know the progress of the current version and choose the next version update.[Current Version: Immortal WorldVersion Update Progress: 99.3%]When ths next version comes, he will make the shopkeeper pay.

In the tenth year after the new era, the world finally came to an end. Zhang Mu truefully waited for his death, but unexpectedly found that he had returned to ten years ago. With his memory about the future, he swore that he would change the calamitous history, saving the earth from being destroyed! Walking dead, zergs, evolvers, and various mutated animals… nothing can stop him! The first step is to retrieve his identity as an era merchant , then find all the treasures he can remember to enhance himself!

- Description from Novelupdates

Irene Pareira is a boy who sleeps to run away from reality.

After his death, Bern awakens 10 years into the past as the third prince of Kailis, the enemy country.