Toaru Hikuushi e no Tsuioku - Prologue

I awoke as Violet, a familiar villainess trapped in a shady corporate research lab. Screw this! With my unstoppable cloning technique, I’m getting out of here and going to the Academy to live my own life!

The world’s top level hacker, Shi Lei; due to him hacking the world’s top military powers during a joint exercise and attempting to steal information from them, ultimately leads him to get sold out by his own organization. This act eventually caused his own death by a missile bombardment.

God was playing a joke on him and allowed him to return back to six years ago, the autumn season of when he was still at his university. Being given another chance, plus the fact that he retained his ability as one of the best in hacking technology, Shi Lei decided to change his life! During his previous life, he was only an assassin in the dark. Although such an existence made people afraid of him, he would have to always hide within the shadows. In his new life, not only does he want to be an assassin in the dark, he also wants to stand openly in the middle of the world stage. Creating a world-class super enterprise, he will single handy change the whole world!

- Description from Novelupdates

Strength.... That's all that matters in the end.

After being abandoned by his own family, and shunned for having no mana in a world dominated by magic, ex-prince Arvell Relas Vispia was forced to live on the streets with whatever meagre money he had left.

However, fate had something else in store for Arvell.

After meeting the spirit inhabiting his amulet, Arvell gets reborn as a Nephilim.

A being that has the powers of a god.

Time, Space, Life, Death.

All submitted to the authority of a Nephilim.

Betrayed by those he once called family, Arvell swore to get revenge.

Revenge on all those that mocked him and shunned him as a 'failure.'

Revenge on those who betrayed him without a second thought.

This is a tale of how a young prince shunned by the world as a 'failure' rises and ascends to the pinnacle of strength.

A reader has been watching Hanyu for so many years and can’t help but revolt!

This is a Korean entertainment in my imagination, not a stallion, not a red palace. Korean entertainment that is as close to real life as possible

- Description from novelbuddy