MTL - Movies and TV: a New Class Per World - Chapter 17

Haruki arrives in the Naruto world and before he could take a breather, a ninja, holding a sharp blade, rushes towards him.“…”He closed his eyes and prepared for a second transmigration.Unexpectedly, a pair of huge claws stretched out from behind him and twisted the ninja in front of him.“Yuta...”“Don't hurt Yuta...”Haruki opened his eyes and saw a face that was extremely terrifying.Isn't this the Queen of Curses Rika from Jujutsu Kaisen?…[Congratulations to the host for successfully calming down the companion cursed spirit who was in a rage—Rika Orimoto!][The Cursed Spirit Mother Auxiliary System has been successfully activated!][The King of Curses Ryomen Sukuna... Waiting to be activated! ][Host Identity Template——Yuta Okkotsu][Please activate Yuta Okkotsu's main ability!]

Xu Zimei found himself reborn, carrying with him all the heaven-shaking cultivation and memories from his previous life.But something was off about the script. Isn’t reincarnation always the protagonist’s theme? However, I was cast as the villain!This is the story of a villain's step-by-step journey to becoming the Demon King.——————————In an era of great strife, where mystical arts resonated!An elder of the True Martial Holy Sect sat at the Willow Bank River Fishing Platform when suddenly he heard the dragon’s roar. Three thousand carps knocked at the gate of life, transforming into the Measureless Golden Dragon, soaring through the firmament, graceful as a startling swan!There were strongmen who measured the heavens and earth with their strides, monks who sat in meditation in temples for three thousand years, achieving sudden enlightenment—auspicious clouds descended, and all laws of magic cheered in chorus.Blood moons darkened the night, rainbows cut through the daylight.There was a swordsman with a wooden sword on his back who, with a turn and a raise of his hand, shattered thousands of miles of rivers and mountains.In the south of the city, a ragged beggar with a broken willow twig dared to assault the Holy Court of a sect that boasted three emperors.

Damien Julian is an 18-year-old loser, who has been bullied and mistreated his entire life, at home, he has to deal with his abusive father, and at school, he is constantly been bullied by delinquents, and to make things worse he is always looked down upon by his peers, till one day a mysterious screen appear before him as it said.

[The world has seen the lingering evil in your heart]

[Would you like to be one of the nine demon kings of this world]

[If so what are you willing to sacrifice?]

In the heat of the moment, Damien made a deal with the world, that he would give up everything he owns, or do anything it wants, and in exchange, he shall be reborn as a new Demon King, and what the world required from him as payment was.

[In exchange for power, become a slave of the world, and act as an anti-body for all eternity]

At that moment, Damien agreed, but little did Damien know, that becoming a slave to the world meant he has to be its immune system, what that entail is, that anything that threaten the world must be destroyed even if he has to wipe out humanity, to save it, or assassinate historical figures to bring fort balance or even manipulating events that can potentially end the world, to save the world, this is the story of a necessary evil, not the story of a hero who cares for others.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates