Emperor of Steel - Chapter 625 - Transition 4

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.

Oliver West never expected his quiet life to turn into a nightmare. The boy who once shared secrets and summer adventures with him has become someone he doesn’t recognize. Keiran Morrison - tall, dangerous, and devastatingly handsome - now uses that same intensity that once made Oliver’s heart flutter to terrorize him instead.Every day at Riverside High is a battle for survival. Every corner could hide a new humiliation. Every moment of peace is just the calm before Keiran’s next storm.But why does Keiran’s hatred burn so bright? What happened to turn childhood love into adult cruelty? And why, despite everything, does Oliver’s heart still race when Keiran gets close - even when he’s terrified?Some mistakes can’t be forgiven. Some wounds run too deep to heal.But sometimes the line between love and hate is thinner than you think.

First World : CampioneCurrent - Second World: High School DxDThird World: ???Reincarnated into the world of Campione! Haru Kasugano, our hero slays gods and ascends as the mightiest Godslayer. He battles powerful God-Kings and Campiones, claiming victory after victory. Whatever it is. [Wealth, Power, Beauty] he has it All. Watch him grow stronger as he travels into new realms like High School DxD and the Fateverse, leaving a trail of defeated gods and captivated hearts in his wake.