Naruto: The Outsider's Resolve - Chapter 1.27 (027):

True evil needs no reason to exist.

“All living creatures must die, but I wont. ”

Once known as the most talented and knowledgeable scholar/philosopher across three continents, he basked in the praise and reverence of those around him. However, tragedy struck one fateful night when he bore witness to the cold-blooded murder of his entire family. Driven to madness, he embarked upon the path of power, the path of negative energy, and thus, The Great Demon, Badur, was born.

In a single day, a mountain of corpses were stacked, many of which fell to his blade. However, during his final pursuit of revenge, he met his untimely demise. His soul was extracted and cast into the void, where it would endure eternal suffering.

However, his jouney would not end here……

“What do you desire?”

A grotesque creature floating in the void asked while staring at the bruised and beaten soul of a young man.

[Ding!! Host has received Void grade Treasure]

[Ding!! Goal has been set : Attain True immortality]

A new lease at life is presented

A deal with a Demon filled with resentment

A new journey, a new Dawn

With that the great Demon, Badur is reborn

ps: the book won't progress the way other novels have been progressing. if you don't like a unique development then maybe this isn't the book for you.

In every being, a soul, a spirit, or a core, exists that tethers the consciousness into the solid plain. Witness as how a little spark from who was once a blazing flame, regained what once was lost.“I died and..” grins “...that started my life”What happens when an assassin transmigrated to a cultivation world?They rise through a mountain of corpse to reach the skies.But....What of an assassin whose enemy turns out to be themselves?A world where magic and cultivation co-exist?People say “Keep moving forward”.What if the way forward, is to go back to where she begun?

“Ding! The first function is activated, and automatic training is turned on. The training speed is equal to the super evil!”

“Ding! The function upgrades, the training speed doubles, the function upgrades, the training speed doubles!”

“Ding! The second function is activated, turn on automatic martial arts…” “Ding! The third function is activated…”

Is it difficult to practice? I’m sorry that one day of cultivation is equivalent to decades of cultivation for you!

Is it difficult to practice? Sorry, I can easily learn countless exercises without doing anything!

Alchemy is difficult? I’m sorry that my pill will be moldy if I can’t finish it!

…

After Su Lang passed through, he obtained a one-click training system, which is getting stronger every second! From now on, sling everything, the world has no enemies!

A few years after graduating, Chen Hui was mediocre and suddenly found himself back in the scorching summer of 15 years. It seemed that it was not just a simple rebirth, but a plug-in was accidentally attached. Money, beauty, and power followed. Easy cool text! …

- Description from novelbuddy