Fiancée Stolen by MC, I Trip Them up - Chapter 4: First Clash with the Male Lead!

Han Zhan transmigrates to a different space-time, where girls can transform into Divine Soldiers and form combat contracts. Meanwhile, boys awaken to become Spirit Contract Masters, forming pacts with these girls to resist the Insect Tide together.As a Transmigrator, when he saw that the despised ones were actually the renowned Ancient Divine Soldiers, he was shocked.【Fu Xi Zither】, 【Demon Refining Pot】, 【Shennong Cauldron】, 【Kunlun Mirror】, 【Nuwa Stone】…I want them all!

I am Master Siwei, and I speak for arcane arts.
This is an era of heroes and heroines.
This is an era of great changes.
In the end, it will be an arcane era opened by me.

- Description from Novelupdates

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.

This is a very interesting thing. It is obviously dim and black, but it can emit a golden light, which makes people deeply fascinated by it…

- Description from novelbuddy