Tomodachi no Imouto ga Ore ni Dake Uzai - Volume 4, Epilogue

Follow Chen Ming as he accepts disciples, establishes a sect, and fights his way in a world that deems him a cannon fodder.
He goes against any common sense using his wits and novel knowhow to finish missions and arm himself against his cruel fate.

- Description from Novelupdates

Abandoned by Fate, but Chosen by Chaos.A world where magic reigns supreme and the mightiest wizards stand at the apex.A world where one’s mana affinity, if one even had it, determines one’s status in society, whether one could soar through the skies like a dragon or remain grounded, scraping by like rats or chickens.This was the world Hal Fennec was born into.Raised in the poverty of a border village, Hal had one wish: to give his mother a better life, one free from the constant fear of beast attacks and invasions by the Fellkin.But fate seemed to be playing a cruel joke.Despite being the brightest and most confident among his peers since childhood, Hal turned out to be barely qualified to become a wizard.His natural talent, contrary to his expectations, was nowhere near enough to fulfill even his modest dream of a decent city life.But then, just when his final hope was snuffed out and the future seemed gray and bleak, a twist of fate—or more fittingly Chaos—granted him a system that would turn everything around.

After reincarnating eight times unsuccessfully due to a glitch in the netherworld, Jia Hao finally reincarnated in the world of Urban Fantasy, an eroge game that he played before. However, he realized the game was currently in the bad ending mode and he is powerless like a side character without any game system.

Skinny dude who blackmails girls? Check!

Fat Ugly Uncle who lusts after women? Check!

Blonde haired delinquent whose eyes are covered with bangs? Check!

As Jia Hao was wrecking his brain to how to change the plot, he found a mysterious pot that can take him into an ancient world, and the items he brought from the modern world transformed into heavenly treasures!

“Now, you dare to gaze at my women? My dear wives! Beat him to death!” Jia Hao ordered as he leaned back on the chair like a salted fish.

I woke up in this world with a System and a sword. Without hesitation, I chose to complete the princess’ quest with my weapons: Arrogance. Cunning. Pride. I will lead guild Sol Invictus. Denizens of the 7 hells, respect me. Servants of the 11 heavens, know fear. Guild Invictus, know the suffering of training so you can wrest victory from the jaws of those who dare doubt you.

This is a story about a snake named Tycondrius waking up in a fantasy world of swords and sorcery. There is action, violence, unapologetic murder, and arrogant displays of power. There is an emphasis on combat growth as well as psychological growth on more than a few members of Guild Invictus. There is camaraderie and also the inevitable comedic dialogue amongst manly men. There are even elements of romance and Tycon running away from terrifying, powerful women. (Did you know most female snakes eat their partners after mating?)