Dragon Monarch System - 30 Chapter 30

One Piece World (Completed): On the eve of the summit, the Navy Headquarters urgently needs a large number of elite combat forces to deal with the Whitebeard Pirates that will attack the Navy Headquarters next.

At this time, Warring States thought of the man who once shined for a while.

“The former admiral, the man with the most potential to become a marshal!”

“He was with Roger, Whitebeard, on this sea.”

“But he was also the only general who made a big mistake and was erased by the navy.”

Recalling the past, Warring States fell into hesitation.

Whether to use him or not, this will make the Navy take great risks.

The World of Naruto (Hot Serial): Starting from becoming the younger brother of Golden Shining, starting from the night of the Nine Tails, subverting Konoha and subverting the ninja world.

Sarutobi Hiruzen: No one would have thought that the young man who had been mediocre for twenty years would possess a terrifying strength no less than that of his elder brother.

No one would have thought that Konoha’s golden flashes were two men!

- Description from novelbuddy

An unknown disciple from a small sect battling against the strongest in the cultivation world! The long journey working at cultivation, the realization of destiny and the chance to reach the apex of the world.

Humanity achieved dominion over the galaxy long ago.Once that was accomplished, they turned their ingenuity inwards. With their prowess over biological engineering, they transformed themselves into deific beings now called the Gene Tyrants. For centuries, the Gene Tyrants terrorized the galaxy, designing and abusing their genetically engineered servants and serfs as their whims took them.No tyranny can last forever, though, and the Gene Tyrants were eventually overthrown. The rebels discovered a strange light of the mind called Aether, which gave them the strange and fantastical powers they needed to eradicate their creators. Once that was done, however, that by no means meant peace.In the thousand years since, the face of the galaxy has changed. The most powerful human civilization is called the Supremacy, the homeland of 'might makes right'. In the Supremacy, a crime committed by the strong is no crime at all. With their military strength and mastery of Aether, the Supremacy has spread across the galaxy -- with the other powers able to do little but stall their advance. This struggle has developed into a cold war, and that cold war has frozen over for years now.Dragan Hadrien, a low-level administrator in the Supremacy, cares nothing for any of this. Dragan's primary concern is getting himself a promotion and taking it easy for the rest of his days. When a mysterious prisoner is brought aboard his ship, he thinks he has found the means to do just that.How naive of him.

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.