Re-Overlord: I Can Acquire Anything! - Chapter 38: Dark Summoner!

Claimed to be the greatest team in the history of the card film industry — “Mu Lei” is born. With even the elites of the academic world unable to decipher these cards’ structure, his powerful cards were able to unnerve even the federation, causing the greatest Card Creators and Card Fighters to grow frantic, triggering open battles and covert maneuvers among various interest groups — all behind the silhouette of Chen Mu. Although he was not the originator of the federation’s unrest, he was definitely the number one reason for continuously escalating it.

A world-famous hacker and daughter of the most powerful criminal family who ruled the international underworld for many generations is killed when their organization is annihilated in a single night.

Du Fei was reborn, and in this difficult era of extreme shortage of supplies, he started his wonderful life of opening and hanging…

- Description from novelbuddy

A story about a traveler who crossed into a parallel universe, relying on his Proficiency ability to continuously grind experience and become stronger.