When The Cute Kunoichis Spied on Their Teacher's Secret - Volume 2, Prologue

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.

On the surface, she’s a gay high school boy. In reality, she’s the hacker known as Z, who hunts criminals on the Internet. A girl dressed in men’s clothes; a master at playing games, punishing evil, and having the highest skill in seducing girls. When people learned that “he” was actually female, the entire population blew up!

Fu Jiu: “Great Deity Qin, do you have a girlfriend?”

Qin Mo puts down the laptop: “I don’t have one.”

Fu Jiu starts to seduce in a low voice: “In that case, you have one starting now. Me.”

Hearing this, Qin Mo leans over tyrannically.

Fu Jiu is dumbstruck: “Hold on! What are you doing?”

Qin Mo: “Using my privilege as a boyfriend.”

- Description from Novelupdates

“I don't share my possessions, Mr. Campbell. Your wife stole from me and now I want something back. You should know I always collect what I'm owed,”When Liam Campbell's wife steals from his wealthy female boss and disappears, he's left to face the music. But his boss, Lady Isabella Ashworth, has other plans for repayment—plans that involve keeping the handsome man for herself.Everyone thinks they know the score: young guy becomes a rich woman's plaything. What they don't know is that Liam's got more weapons than just his looks. Behind his perfect face lies a ruthless mind that turned him from a nobody into a rising star.Now, trapped in Isabella's world of luxury and power, he'll play her game—but by his rules. His main goal is to dominate her as much as she wants to dominate him.But who's really taming who?

The young man of the Qin Residence, Qin Qing, suffered a brutal betrayal by his beloved, his Martial Soul was consumed.Yet, by a twist of fate, his Soul Palace was rebuilt, and the Dragon Soul awoke within him.From then on, the young Qin Qing stepped out of Tianjue City, Sky Stepping the proud sons of heavens and defying fate, he overpowered his contemporaries, ascending to the pinnacle of Martial Arts one step at a time.