This is really not mechanical ascension - Chapter 812 - 421: Negotiating with the Tiger

Liola—the best assassin in his world—has vowed to kill no more. He was being chased by an assassination organization when he accidentally dropped into a parallel universe: through a dimensional gate and into poor teenager Kaiser’s apartment. Instead of going to the government shelter for lost dimensional travelers, Liola and Kaiser wind up going to school together.

Liola has been trying his best to live the life of an ordinary person, but after certain things happen one after the other, he begins to realize that being an ordinary person could be harder than being an assassin.

Abandoned at birth in a humble stable, Shirone was raised by commoners—but he was anything but ordinary. Blessed with remarkable insight, he taught himself to read at a young age. A fateful visit to the city introduced him to the wonders of magic, igniting an unshakable dream of becoming a mage. Yet, beneath the city's dazzling facade lurked a ruthless social hierarchy, where power and privilege crushed those who dared to rise above their station. As Shirone uncovers the world's darkest secrets before even coming of age, one question remains—can he defy fate and claim his destiny as a mage in a world determined to keep him down?

The convolution of worlds are govern by a set of gods, each god is given a world to rule and there can be skirmishes between them – as a result of one between Nexus, the god of trickery and a senile old hag Elliot reincarnated into Ul’Tra-el by mistake.Ul’Tra-el is a world that grew a voice, because of this voice, it began to take a different path from other worlds -- it was filled with a core anomaly – rifts.Dimensions began to leak into each other, vomiting outrageous monsters.In response or as an auto-correction to such anomaly, talents were awakened in the inhabitants of Ul’Tra-el and they gained tremendous power, for every rift they close down, they were rewarded massively by the voice of the world called Ul.In a hardcore world like this one, our MC (Northern) reincarnated as a talentless individual but in the face of a death and a head splitting revelation......when all hopes seemed lost.{System Notice}Your Soul cannot take a formSearching for Unique pattern ability for your soulsearching...search found.Unique System ability has been found...Unique System Ability [CopyCat] has been gained.Awakening Unique ability...Northern gained a talent copying system!...Follow Northern through his journey as he becomes the pinnacle of this world.This a story about a white-haired boy’s rise from rubbles!!

Lacking a pocket dimension, lacking a power, lacking a thigh to hug onto and the three life advantages (money, power, and looks), he had been cautiously living in the apocalypse for ten years, getting closer to falling inside the zombie’s mouths. But unexpectedly, he had the terrible luck, to be caught in a fight between two gangs and die, it really left people feeling disappointed.