The Undead King of the Palace of Darkness (WN) - Chapter 125.2: , The End of the Journey

This book narrates the joyful cultivation tale of an ordinary commonplace university student and a cute and coquettish little fox.

Fate, a gatekeeper who had been working for the castle, is beset by a few burdens.

“As long as I level up another 10 times, I will be able to activate the Gene Lock. At that time, I will be able to destroy this celestial body!” After transmigrating into the body of a trash in a future where zombies and intellectual beasts existed, Lin Xiu accidentally obtained an upgrade system to transcend human limitations and devour the heavens!

It begins on the mountain.

With the glint of a knife, a flash of steel in the hands of a sworn brother. A betrayal.

Stabbed and pushed down the mountain, Zi Chen lied within the red-stained snow, left to die.

This is where it begins; he is given life by lightning,
baptized by thunder.

Those who had once betrayed him should all suffer in his cruel revenge.

- Description from Novelupdates