The Promise Sealed with Our Lips - Chapter 87

Su Yuan transmigrated to Teyvat.At the same time, another strange and eerie force descended upon this world.The entire Teyvat was affected to varying degrees.Furina endured five hundred years of loneliness in order to save Fontaine.But just before the dawn of victory, she succumbed to madness under the influence of the eerie force...“No one understands my loneliness... No one can comprehend my fear... No one can listen to my pain...”“Why must I give so selflessly... Do the people of Fontaine truly deserve my sacrifice?”

Ye Fan accidentally obtained a billion crystal technology system, and since then, he has become out of control.

Android: You do n’t even have a mobile phone system. I want to make it impossible for you all!
Ye Fan: Sorry, I researched it out, it seems to be more powerful than yours!
BMW Benz: Our engines are famous all over the world!
Ye Fan: Sorry, I do n’t have an engine, I only have magnetic levitation, and the speed is only a few times that of yours. Do n’t worry, take your time!
…
Enemy: Is he still human?
Who can stop this!

- Description from Qidian

All I know is this is just wrong. I was just reading the latest chapter of One Piece in my computer. And an annoying survey popped up asking me if I want to play One Piece new beginning. Thinking nothing of it I said yes.And selected ‘Realistic’ difficulty.There was a game loading screen. Loading gibberish, and warning me that the world has a lot of surprises in store for me. Not all things are same, because I had to choose the ‘developer’s time-line’.And then telling me to brace for Character Synchronization. And before I knew it, I was no longer your average Joe. And this wasn’t earth either… no this was One Piece.And, I was Monkey D. Luffy. The future King of pirates.I mean what could go wrong? If Luffy could do it, so could I.But this wasn’t the same One piece world I remember. Some changes are small like Kuina being Zoro’s rival… who’s alive.While others were huge. Like… did you know, Whitebeard had an actual beard?! Man looked like Santa Claus on steroids. Jaked and shit!Just what did I get myself into?But does it matter?No.Because I’m going to have the time of my life. This was going to be one heck of an adventure.

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.