MTL - Start From Soul Society and Cutting Through All the Worlds - Chapter 32 I didn’t say that my mission failed (please follow up)

Yuan Xi had been the secretary for Gu Hanchen for five years, working tirelessly without a single day off. Not only was she overworked like a horse, but she was also slandered by Gu Hanchen's fiancee and her friend, Miss Chu, who accused Secretary Yuan of delusionally hoping to turn from a sparrow into a phoenix and become the wife of President Gu. No longer able to tolerate the treatment, Yuan Xi handed in her resignation letter. After resigning, the once overburdened secretary surprisingly turned out to be the legitimate heiress of the wealthiest family in Jiangcheng, the Chu family! Back at the Chu household, Yuan Xi discovered that the family had taken in an adopted daughter, Chu Yan, who had been standing in for her. The false heiress was bright and unrestrained, rightfully considered the unrivaled young mistress of Jiangcheng. Even after the return of the true heiress, Chu Yan remained the celebrated young mistress while Yuan Xi was invariably seen as a mere shadow when compared to Chu Yan's splendid life. Yuan Xi's husband did not even own a house in the center of Jiangcheng. In contrast, the impostor Chu Yan was set to marry into one of Jiangcheng's top four wealthy families, the Bo family. Everyone in Jiangcheng ridiculed Yuan Xi for not having a life as fortunate as the false heiress, nor a discerning eye. That was until the day when Mi Chen was listed on the stock market, and Yuan Xi swiftly rose above her own father to become the new wealthiest person in Jiangcheng. On the day Yuan Xi's child was born, the established noble Huo family from A City announced with great fanfare the joy of welcoming a new grandson... Yuan Xi had always thought that her marriage to Huo Shiyen was merely a shotgun wedding, and that Huo Shiyen had someone else he considered his childhood sweetheart and sweetheart under the moonlight. Only later did she realize that she was, in fact, his cherished childhood love.

I originally thought this was a world like an ordinary urban novel…Drawing comics by myself, traveling is pretty good.
But tell me, what happened to this magician called “Emiya Kiritsugu” who jumped on my face?
Who changed the settings?
Currently involved in the content of “F/Z”, “F/SN”, “Fantasy Carnival”, “The Emiya’s Meal”, “The Holy Grail of the Imperial Capital”, “FLA”, “Elmello II Event Book”, “FGO”, “FE”, etc.
Others related to “JOJO’s Bizarre Adventure”, “Rebellious Lelouch”, “Persona 5”, “Attack on Giant”, “Death”
“FGO”, “FE Series”, “FA”, “FSF”, “Cangyin”, “Magical Girl Illya” will be involved next…

- Description from novelbuddy

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.