MTL - Black Clover: Runaway Asta - Chapter 216

An ordinary student accidentally traveled into an other universe and became the king of a small kingdom. He had gotten a “Cheating Code” of life and was able to complete something extraordinary. This is the story about a king that was able to conquer continents and leave behind him an ultimate legend that will be recited between every generation to come.

- Description from novelupdates

What happens when a scientist from a futuristic world reincarnates in a World of Magic and Knights? An awesome MC is what happens! A scientist’s goal is to explore the secrets of the universe, and this is exactly what Leylin sets out to do when he is reincarnated. Dark, cold and calculating, he makes use of all his resources as he sets off on his adventures to meet his goal. Face? Who needs that… Hmmm… that guy seems too powerful for me to take on now… I better keep a low profile for now. You want me to help you? Sure… but what benefit can I get out of it? Nothing? Bye. Hmmm… that guy looks like he might cause me problems in the future. Should I let him off for now and let him grow into someone that can threaten me….. Nahhh. *kill*-

Alternative: Leylin is transported from an advanced technological era into a medieval world— except there’s magic. Equipped with “only” his quick wits and an A.I. chip fused to his soul, he sets out to become the most powerful magus the world has ever known. In a land divided into the Light and Dark Magi, the weak can either be cattle or disposable slaves. Only the strong can determine their lives, and only they have the luxury for virtue. Yet strength is only a tool for Leylin, like any other. His goal, in the end, is his own.

In a world where darkness was always a step ahead further and the light was late and bleaker, “Grim Dark Online” has become a well acclaimed VRMMORPG, drawing players into its thrilling depths. But when hackers breach the game's firewall, players including Kenji find themselves trapped in this virtual reality after an abrupt system shutdown.As chaos unfolds, the World Soul Barrier collapses, unleashing a horde of demon gods and their minions upon the realm. The Cult of Black Snake, the Silent Nightstalkers assassins, and the slaughter of the Immortals threaten their very fabric of existence. With the World Soul and the World Tree corrupted, Kenji must navigate this perilous landscape armed only with his last playthrough’s knowledge as a Warrior and several other Classes.Previously, he had conquered the God of Death, a necromancer villain, and earned the title of God of Slaughter. But now, faced with the onset of devastation, he is thrown back to the beginning of this nightmare.Desperate to reclaim his former power as a warrior, Kenji discovers that fate has other plans. Instead, he is bestowed the class of Necromancer—the very embodiment of his past fears. This transformation offers him an unexpected opportunity to rise above his previous limitations. With the unique ability to summon minions that mimic his battle instincts, Kenji possesses greater firepower and tactical versatility than ever before.Now, he must embrace his newfound abilities and confront the demon lords and gods that threaten to consume his world. As a warrior trapped in the body of a necromancer, Kenji’s journey is one of survival, adaptation, and redemption in a realm where darkness reigns. Will he harness the power of his newfound powers? Or will the very darkness succumb them all?

Longevity Celestial Dynasty, Nine Years of Destiny.

China is in chaos, and the people are struggling to live.

The imperial rule collapsed, and the Western barbarians attacked with the religion of the gods.

The new warlords are everywhere, and they are divided into one side.

Natural disasters such as floods and droughts, the overturning of the earth dragon, the sandstorm tornado, the acid rain, the red moon, and the falling of meteorites have come one after another.

There are also countless monsters running rampant, strange clusters, ghosts and ghosts, indescribable monsters, or mysterious phenomena that cannot be understood.

In this dark and chaotic world, Tao Qian opened his eyes and found himself a prisoner who was about to be beheaded in Caishikou…!

- Description from novelbuddy