In Different World with Naruto System (WN) - Chapter 323: Method to Break Universe

Mo Tianliao was a master weaponsmith and a demonic cultivator. When news spread that he was about to complete a divine weapon, cultivators from both the demonic and orthodox sides chased him down and killed him. In a stroke of luck, he managed to possess a new body and was reborn.

So what was the first thing on his mind after his rebirth? Avenging his death? Taking over the world?

Mo Tianliao: I have to find my cat!

—
Mo Tianliao: Why won’t you let me hug you? You used to be my cat!

Master: (unsheathes claws)

Mo Tianliao: Ahaha, this disciple has too much respect for Master, this disciple can’t bear to let Master walk on the ground!

Master: (lifts paw, sends disciple flying)

- Description from Novelupdates

Lu Ze transmigrated to the interstellar era two thousand years later.
The previous owner of this body had lovey-dovey parents and a cute little sister. Although his cultivation talent was ordinary, his life was fulfilling. It could be said to be a dream start. Lu Ze was very happy.
However, as soon as he slept, he came to a strange dimension.
He almost got taken out trying to fight an one meter tall huge white rabbit. After making the arduous kill, Lu Ze found that things didn’t seem to be so simple.
After killing prey in this dimension, he could get little orbs that could be used for cultivation.
This was going to make him an eternal jungler.
But he seemed to be able to hope for domination of the cosmos and invincibility?

The Capital’s girls look on with hatred, “ You’re just a country girl without any knowledge. Do you have Niyun Shop’s clothes? Do you have Brilliant Treasure Pavillion’s jewellery? Do you even know how eminent and domineering the famous Yue Wang is?

Mu Yunyao looked at them lazily, “ Niyun Shop? I opened it. Brilliant Treasure Pavillion? I opened it. As for Yue Wang…when are you returning my silver?”

Yue Wang’s face was cold: “I will pay with my body.”

(Wang means King. In this case, “Yue Wang” was a title given by the Emperor to his son.)

After being reincarnated, Mu Yunyao believes in three things: One, do not have good intentions towards others. Two, do not let the enemy have the chance to rise again. Three, do not believe in feelings. Thus, she is merciless. She is fearless. She would rather have everything destroyed than to compromise for everything.

However, after one fateful meeting, a cold-blooded prince keeps following her, silently plotting on making her his wife and bringing her back to pamper her…

- Description from Novelupdates

In the end of the world, the fittest survive.

Come back from rebirth, seize the opportunity, just want to survive in the hopeless end times.

Three months before Mu Nan returned to the apocalypse, he sold all his savings to accumulate supplies, hoarded everything he could hoard like a hamster, and then huddled in his own house and lived a low-key life, carefully waiting for the apocalypse to come step by step…

- Description from Novelupdates