My Multisystem In Isekai

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.
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It will be a story that focuses on combat and levelup but still has many mature contents. I've read a lot of fiction about cool systems, so I wanted to try one. So many amusing ideas popped up that I didn't know how to choose the best one. After a long time, I decided to blend them into one story.
So the MC will have many routes to upgrade and, of course as well, many pretty female characters.
I can't wait to share these with you guys!