Jujutsu Kaisen: I Can Travel Back in Time - Chapter 46 - 40 Murder case

Shao Xuan joins a friend in his expedition to a recently discovered archaeological cave. After he picks up an ordinary looking stone he is teleported to a different world and wakes up in the body of a small orphan child. The world he is in now is still in its stone age with primitive tools made of stone and the ways of the people are savage. Savage isn’t the only thing special about the people though, because they have superhuman strength, jump higher than trees and punch stones. In short, they are able to cultivate their bodies. Despite all this, it is a real struggle to survive because of the scarcity of food. Together with Caesar, his pet wolf, he tries to survive in this cruel world.

Forcefully brought over from the modern world to an alternate world, Wang Chong felt detached and lived his life aimlessly.

However, when calamity struck and he saw his family and everything he cared for being torn apart, he felt regret.

Thus, he stood up and eventually became the Grand Marshal of the Central Plains, leading an army against those who seek to destroy all he cherished.

Yet, despite all his efforts, it was already too late to reverse destiny.

But before his death, a shooting star, the same one which brought him to this world, appeared before him, and he was given another chance to undo his regrets.

- Description from Novelupdates

What people do, heaven sees. Evil-doers will receive punishment. But there is always someone who thought that because they have the protagonist halo, they could do whatever and bully whomever all they want without any consequences. Then, let’s just remove their halo and tear down their mask of hypocrisy. Let those scum men and goody two-shoes experience “putting yourself in other’s shoes”, so they would know they were at fault.

At first, Lu Jingqian thought he had to sacrifice his body in order to complete the task. But there are three benefits in doing so; having great items, living a good life, and having a high face value. After a long while, he also felt quite good… what to do?

System, “Can you be more modest? Please remember when you first rejected the idea, what about those just and upright words you said before?”

Lu Jingqian looked at the sky, “Modest? What’s that? Can it be eaten?”

- Description from Novelupdates

To save a doomed fantasy world, I killed the main characters, then destroyed the game world, and fell into another timeline as the academy's top seat and rival to the protagonist.Now, I'm trying to save the world and steer it towards a better ending…But I'm the final boss.