Married To Darkness - Chapter 5: Drawn by the Steam.

Zavier met Cosmic Consciousness after his death. He was satisfied with every system that Cosmic Consciousness exhibited, so he wanted all of them. Surprisingly, the Cosmic Consciousness obliged him.

Zavier was reborn in an isekai full of magic and alchemy. Now, he had many routes to upgrade. Interestingly, to coordinate these systems, Cosmic Consciousness gave him the gift of being able to duplicate himself. He could clone a finite number of himself to manipulate these systems.

Magus, Alchemist, Mesmer, Tamer, Hunter, Vampire, Werewolf, Dragonknight, Necromancer.....

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By the way, it wouldn't appear NTR or some bullshit harem of courtships. MC of course will have harem but not for cliches.

Many strange phenomena have been happening in Yin City. Li Ang—whose alias is Li Risheng—becomes embroiled in an absolute real game of life-and-death, known as Killing Field.Using his above average analytical and deductive skills, he completes different quests assigned by the system, such as eliminating supernatural beings or solving cases, while trying to unravel the true nature of the game.

As long as the land is square, Yan Bicheng should divide the world into four parts.
The dark organization “Ruyimen” has abducted children for many years, trained them as assassin agents, and sent them to the families of various countries for use in order to collect a lot of secrets, and gradually extended their evil hands to the court.
Feng Xiaoya, the favored minister of the King of Yan, suffers from bone melting disease. She is unparalleled in her “sickness and beauty”. For some reason, she abandons the eleventh wife, Qiu Jiang, and puts her under house arrest in the mountains. Qiu Jiang, who has forgotten his past, fled alone on a stormy night. After several twists and turns, on the way back, he met Yi Fei, the third prince of Cheng who was in trouble in a foreign land.
One wants to regain memory, the other wants to regain the throne. The two people who are incompatible with each other walk side by side towards Cheng in a bloody storm… but they find that the Ruyi Gate, which has been entrenched in Chengjing for a hundred years like a poisonous snake, seems to have undergone an unknown shock… …
The situation of the Four Kingdoms is back, and there is only one goal – to eradicate the evil organization Ruyimen!
However, as Qiu Jiang’s memory slowly recovered, a unparalleled secret finally surfaced…
Mrs. Ruyi, who is it? There is another mystery behind Ji Ying’s death?
What is the purpose of this return journey after a narrow escape, and where does it go?

- Description from novelbuddy

worlds and transform into the ultimate badass! I'm aiming for 1,000 chapters by the end of next year!! Join me on this journey!Meet Alex, a 28-year-old loser and internet troll who spent his life glued to his PC, binging anime, games, and movies. His story comes to an abrupt end… or so he thinks. Instead of a peaceful afterlife, Alex wakes up in the Fantasy Realm, a chaotic universe where different fictional worlds collide, and survival is anything but guaranteed.This fanfiction is inspired by Terror Infinity, Reincarnation Paradise, and The Ultimate Evolution.Explore Iconic Worlds: Dive into your favorite fictional universes like One Piece, Hunter x Hunter, Naruto, Harry Potter, Lord of the Rings, Mass Effect, and more!A Unique Cast of Characters: Follow a small but very diverse cast with unique abilities that set them apart from others. Expect a small, growing harem where every member is meaningful! No “trophy” waifus here. Each character remains integral to the story.A Relatable MC: Meet a realistic, flawed, and fast-growing main character who faces relentless trials to survive. Will he sacrifice his morals for survival? The Thrill of Progression: Experience the thrill of getting stronger, mastering new skills, and surviving deadly missions and battles. Watch how the main character collects rare and powerful items, each with unique strengths, weaknesses, and requirements.For those interested in the specific worlds. Warning Spoiler:First arc: One PieceSecond arc: Final Fantasy 9Third arc: The PurgeFourth arc: HxHCurrent arc: Harry PotterConfirmed arcs: One Piece (revisited), Naruto, Harry Potter (revisited), HxH (revisited), Star Wars, Mass effect, LotR, PotC, Stargate