MTL - Blade and Sword God Sovereign - ~ 1021 There is one thing you will be shocked

In the cyberpunk era, corporate alliances dominated the world, and both the humans and witches were ens*aved by advanced technology, becoming nothing more than fuel for society. Unwilling to become a company dog, Xu Yang decided to run away, while saving the cute and powerful witches from the giant enterprises, together they embarked on a road of innovation!

- Description from Novelupdates

After a shocking reincarnation, our hero opens her eyes to a new (and messy) world the last thing she remembers is reading Lady Viper’s Vow, a dark fantasy novel about a cruel, misunderstood villainess and her path of doom. But when our protagonist finds herself reborn right in the heart of an attack, she’s moments away from a second, way-too-soon death. Just as she’s about to face the end, a mysterious “system” pops up with a single mission: Level Up or Die Trying. It’s bossy, snarky, and her new best friend. As she levels up into a borderline-cheater powerhouse, she discovers her fate isn’t to be a hero, a princess, or even a sorceress, but to protect the one person no one ever expected her to side with: the villainess herself.

In a world where everyone awakens a Trait to start their cultivation, Rhys's was considered a joke: he would never age.In a world that worships raw combat power, a Trait granting eternal youth was worthless. To his powerful family, Rhys was a talentless failure, a stain on their name. With disgust, they cast him out onto the streets, leaving him with nothing.Alone and powerless, Rhys's life was shattered when he was caught in the crossfire of a terrifying battle between two god-like cultivators.Mortally wounded and left to bleed out in an alley, he faced a lonely, pathetic end.But as Rhys's vision faded and his last breath drew near, a new power roared to life within him.[Lifespan Burning System Activated]Suddenly, his useless Trait became Rhys's greatest weapon. His infinite lifespan was now the ultimate fuel source.A divine martial art that takes a genius a hundred years to master?[Consume 100 years of lifespan. Skill comprehended to Maximum Level.]A fatal wound that no healer can mend?[Consume 10 years of lifespan. Body restored to peak condition.]An ancient, unreadable text holding the world's greatest secrets?[Consume 500 years of lifespan. All knowledge unlocked and understood.]From the brink of death, Rhys rises with a burning purpose.The world saw him as trash, but now he will trade his endless years for the strength to stand above all.(Posting this on RR under pen name Unnikuttan)

A young man with an extraordinary mind is off on an exciting adventure when he mysteriously wakes up in the body of a feeble slave-guy in a different, rich in quirks world.

The main character, a selfish jerk, would use extreme means to achieve his goals. However, he never allows his base instincts to overrule his sense of decency. He always pays back both good and bad deeds.

Will his (terrible/excellent) mentality help him make a fresh start? Will he get through misfortunes and hardships of the new world?