MTL - For a Prosperous World - ~ Questions about the recent plot

Zhu Kang, a trafficked soul, was captured by an evil organization and was stripped of his real memories. Unaware of the dangers he worked for this evil corporation as a system.One day, all of a sudden, fifteen men dressed in black started a shoot-out killing all the other systems.In desperation, Kang threw himself into a transmigration device that tossed his soul into a random world.“System 202 has escaped.... a-again.....” one of the black-clothed men said. Trembling, he glanced at their team leader.Kai Alden gritted his teeth. “You let him slip away so easily! Send me into that world. I will capture my dear System and bring him back here,”

Chen Yu, who had traveled to another world, felt that it was not a big problem after discovering that this was also a world of high-rise buildings and heavy traffic.

but………

Looking at the pop-up window above the phone, “Daming Academy of Sciences…”

I know that this is borrowing another five hundred years from the sky, and Chen Yu feels fine.

But… look at the great white sun that shines in the night.

Chen Yu felt something was wrong.

But looking at the system that he can travel through the heavens, Chen Yu feels that the problem is still within the controllable range. should……

Then……

…

A certain fairy world.

“Chen Yu, our Taoist sect has discovered a world that is being promoted from a small thousand to a great thousand. You lead our Taoist disciples as pioneers to check it out.”

Chen Yu, who has become a direct disciple of Dao Tianzong, “…”

…

The world of the gods.

“Your Highness, the observers of the temple have discovered…”

As one of the gods in this world, Chen Yu, “…”

…

wizarding world.

“Your Majesty, we have discovered a world that is ascending latitude…”

Chen Yu, who has achieved level seven in this world, “…”

…

- Description from novelbuddy

Humanity was living peacefully on Earth for millions and millions of years until the day unknown monsters from beyond space invaded them.

When humans were about to disappear, some people with abilities came out to the light and shared their knowledge and powers with the world, and together, they managed to push back the invaders during a terrible war that had lasted for years.

This war had created many orphans, and among them, Kye had lost everything, even his parents. And the only thing he received from their death was a pale-looking necklace.

However, once the necklace finally activated, a system was given to him, and his life changed completely.

The system gave him quests to do, and Kye complied. He was getting stronger every time he achieved them, until the day it gave him a weird quest.

[You have one day to kill the one who had sinned. If you do not kill, you will die.]