Strongest Survival by Otome Game’s Heroine (LN) - Vol 4 Chapter 8: Dungeon Exploration Floor 80

Fate had never been kind to Ji Ning. Wracked by illnesses and infirm his entire life on Earth, Ji Ning knew early on that he would die as a teenager. What he didn’t know was that there really was such a thing as life after death and that the multiverse was a far larger place than he thought.

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

[Are you crippled?][Did your fiancé break the engagement?][Did you lose your family to a demon attack? Are you the last surviving member of your clan, seeking revenge?][Does your family look at you with pity because you're the only one without any innate spiritual roots?][Are you tired of being told that you're a 'waste of resources'?][Are you stuck with no way to progress? Are you tired of being weak and helpless?][Well, have no fear! This Supreme Master is here to help you!]

The main character has been reincarnated, and he possesses a system and a powerful treasure. Using these, he plans to create his own universe. Keep reading to find out more.