I Fabricated the Techniques, but my disciple really mastered them? - Chapter 308 - 183: The Power of Mystery,

Born into darkness, Lucius is marked by an infernal curse—the Mark of the Abyss. This unholy sigil endows him with powers that defy mortal comprehension, yet seals his fate: servitude, rejection, and a grim demise.Embark on a journey with Lucius as he unravels the hidden truth behind the Marks, battles to carve out a destiny of his own, and strikes back against the cruel fate imposed upon him.In a world that shuns him for his cursed existence, Lucius will forge unlikely alliances to challenge those who scorn him. He is driven by a relentless desire to claim a place for himself and his loved ones, no matter the cost.Prepared to plunge into the darkest depths of depravity, Lucius is poised on the brink of a harrowing journey. The ultimate enigma remains: what awaits him in the abyss of his ambitions?

Unhindered in the Demon Domain, the king is solitary!

In the world where immortals and demons strive, a good natured fellow sought the Demon Dao in search of justice.

At the end of his journey, he had eventually become this generation’s Heavenly Demon Emperor.

Although I am not fond of slaughter, I do not dislike it!

Desiring to see the Demon World, this is how I strive, this is how I become the Peerless Demonic Lord!

- Description from Novelupdates

The century long war had just ended and humanity had managed to get their hands on alien technology, sending them years ahead in terms of technological advancement, fulfilling their hope of finding life outside their planet and their desire to dominate these extra-terrestrial existences. The effects of their technological advancement alone wasn’t capable of giving this result.The appearance of mutations which granted supernatural powers among humans was another boon giving them the chance to act out their darkest desires.Their joy took a dark turn when it was revealed that they were nothing more than livestock to the mysterious race, Xillthars, who cultivated them to that level. Like fattening livestock.Shortly before this dark turn of times was a forbidden creature, Kieran who had been born into the lowest levels of a society created by the greed of humans. To him, life had always been hard, but things got worse after the arrival of the Xillthars as he found himself on a trail of shocking discoveries about himself and the world around him.

“When I opened my eyes, I found myself as a character in a game. It was bewildering, but I thought it was worth a try. That was until I saw the skill given to me. It was [Opening Eyes], with no abilities whatsoever.”The story starts with the MC playing a game that is “Very Difficult”, so difficult, in fact, that no one has ever managed to kill the last boss. After 18 years of playing and, having the best attempt be at 30% of the last boss’s HP, he decides to try out a character that he never used.This character was the Slit-Eyed character. It had garbage stats and garbage traits. But, since the MC had ran out of options with every other character, he was trying to see if he could find any secrets with this new character. So he puts in his name ‘Zero’ and presses play… Only to find himself inside the game, as the Slit-Eyed character.