Level-Up Apocalypse: Surviving With The Assimilation System - Chapter 27: City of Madness

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates

Wang Ming stood at the pinnacle of existence—just a step away from transcending Heaven and Earth, poised to ascend to a realm no one had ever touched. But at that moment of glory, he was schemed by none other than the Heaven’s favored one—the Son of Luck's master.Forced into regression, Wang Ming is thrown back to his younger years, but this time, so is his greatest enemy. With fate itself seemingly against him, and the Son of Luck determined to end his rise before it begins, Wang Ming must walk a blood-soaked path once more.But he is no ordinary cultivator, he is a variable who defies destiny. Against the will of Heaven, against fate, against the Chosen… he will rise again.This is the story of a man who refuses to bow to fate.

[Ugly-duckling Transformation, weak to strong]The destitute young miss of the Ling family was weak, had lowly qualifications, was ugly and frequently bullied. In the end, she was pushed into the freezing river by her so-called love rival. However, when she opened her eyes once again, her gaze was cold yet captivating! Everything had changed drastically! When her ugly looks faded, she became a peerless beauty. When she displayed her graceful bearing and talent, it was blinding and earth-shattering!I'm a foodie and I'm proud of it. I have a venomous tongue to infuriate people to death, but I won’t compensate with my life.All the handsome men would give their all just to make her smile, which provoked his desire to dominate and possess her. However, in the end, was it him who dominated her…

Our protagonist Caam is a man from Earth that was reincarnated into this world as a demon. In order to survive, he spared no effort in avoiding the sparks of battle and without noticing it, he became strong himself.