MTL - Great Han’s Female General Wei Qiqi - Chapter 5 Oh God, help me

This is a reincarnation/isekai story, about Matt (later TreeTree), an overpowered tree in a fantasy world that serves as the battlefield for an ongoing conflict between demons and the heroes summoned to oppose them.At first a bystander, over a long period of time, TreeTree will learn all sorts of skills, gain levels, and in doing so, build up a forest, train young subordinates, protect a village, and more.

Gu Shanhai saw the great world of the heavens, and took the life of the third life.

The gods of the world forged an eternal Utopia with blood and fire.

The Red Dragon King led his knights to inspect the dynasty on which the sun never sets.

Scholars talked and laughed and swung their swords to draw thousands of miles of rivers and mountains, and strange demons opened their eyes and clawed to give birth to ghosts and monsters.

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“Everyone is a player, you can’t call me abnormal because I don’t have digitization?”

- Description from novelbuddy

Crossing to One Piece world, he became Roger’s younger brother.

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.