Demonic Dragon: Harem System - Chapter 337: Let’s Fight!

Between heaven and earth lies the greatest truth, and the manifestation of the great truth descends in the form of Gu.　　People cultivate the Qi of heaven and earth around their bodies to control Gu and exert their magical power.　　One year after his transmigration, Chen Qing finally discovered his special features on the day he contracted his first Gu. He was actually able to see through everything about the Gu...　　Therefore, he began to march toward the road to immortality step by step.

Chu Feng traveled to a world of global login, where everyone can log in to the heavens and the world.

These registered worlds are all the worlds of animation, movies, TV, and novels that Chu Feng is familiar with.

However, no one dared to log in to the “prehistoric land”, which was regarded as a forbidden place by the global log-in.

Chu Feng, who knew the plot of the prehistoric world, logged in for the first time and chose the prehistoric world to start his supernatural path.

While others are still working hard for a fruit of ability in the sailing world, Chu Feng has become the emperor of the prehistoric human race.

While others were still thinking about how to get the cultivation method in the world of covering the sky, Chu Feng was fighting side by side with Ye Hei to calm down the darkness and turmoil.

Chu Feng: Almighty and omniscient, really cool!

- Description from novelbuddy

Our protagonist, once a homeless child navigating the city's harsh realities, clawed his way towards a better life. He stole coins to buy knowledge. However, the prestigious university scholarship he craved was a rigged system, awarded to a politician's son who needed the name, not the education.Descends into a life of crime.After being forced to taint his pride his death is ordered with his own making the final blow.god “congratulations you're given a chance at a new life...”him “ why?”god “cause you had a tough life so im being generous... and making you reincarnate in a mana world...”him “ bullshit...”On the brink of oblivion, a dubious offer arrives – a second chance from a strange god. Haunted by the shadows of past 'generosity', Rei struggles with suspicion. Accepting means becoming a pawn, rejecting means eternal damnation. With no good options, Rei plays along, unaware his role thrusts him into a cosmic conflict.

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates