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..... ----- By the way, it wouldn't appear NTR or some bullshit harem of courtships. MC of course will have harem but not for cliches.
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My Multisystem In Isekai Chapter 244245
My Multisystem In Isekai Chapter 244246
My Multisystem In Isekai Chapter 244247