Can you recommend a finished novel that is based on the theme of One Piece's harem?

Answer 1

It might not be exactly what you want, but I would recommend a novel that is most relevant to your description."One Piece's Journey to Ten Thousand Worlds" is a light novel by the oldest author, Gu Gu. It is a derivative doujinshi novel. The general plot of this novel is as follows:

At the beginning, he passed through One Piece.
This was the story of the Pirate King who began to roam the myriad worlds and roam the heavens.
[Current status: One Piece (Hot Series)-To be determined-]
[PS: The introduction is too weak, please move to the main text!]
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One Piece: The Invincible Cheater was a light novel by the author, White Lighter. The general plot of the novel was:

First of all, the announcement was to follow the flow of the ship. This book was written about the things that he didn't like about One Piece and the bugs. He had to make changes to them. If you were a loyal fan of One Piece, you would definitely know a lot of bugs, which were loopholes. If you can't even find a loophole and spit at me, I'll ignore it.
The early stages of One Piece are in the development phase, so it's quite boring. I don't want to waste everyone's money, so I'll just fast-forward to X3. Personally, I think that starting from Sky Island is the exciting beginning of One Piece.
I'll bring you to experience a different world of One Piece and reminisce about every beautiful woman who appeared in One Piece.
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One Piece was a light novel written by the author Snake Grass Floral Dew. The general plot of the novel was:

"We agreed on three years. Three years later, another three years. Three years later, another three years. I'm about to become the Fourth Emperor, Boss."
"Can you be nicer to me? Now that I'm the only one who knows that you're a spy, I'll go back and delete your information. I won't have to worry about you being the Four Emperors for the rest of your life."
From an agent to the king of the world.
This book is also known as One Piece Infernal Affairs, One Piece: The Reconnoiter, and One Piece 007.
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His new book,"Making Games from the Ninja Realm," asked for support!
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"The Pirate's Hack into the System" was a light novel by the author Bian Hailangzi. The general plot of the novel was:

The native who should have died received a second life and spread the wings of a butterfly.
It was the beginning of the era of the great pirates. Demons danced wildly and stars shone.
The four emperors had yet to take shape, the first generation's Seven Martial Seas were still newcomers, and the revolutionary army was also lurking in the dark.
Would this world be liberated or would it welcome a new king?
The demon captain will take you on a deep tour of the pirate world.
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P.S.: The system is only a support. This article is an in-depth development of the world of pirates. It is not a head-on attack.
Hot Blood + Overlord + Incompetent, please enter and take a look. You will also discover the evolution path of a rookie writer...
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One Piece: The Unique is a light novel by author Jin Hai. The general plot of this novel is:

After being reborn in the world of One Piece, he tragically became an animal-type pig-type ability user. What was even more tragic was that the pig-foot was actually a slave of the Heavenly Dragon people.
The journey had just begun, and he already had two beautiful female slaves from the Heavenly Dragon Tribe, with a bounty of 1 billion Bailey! Who else?
He could ignore the title of One Piece King! But he must be the most free man in the world, the man who could do whatever he wanted!
Money! Buddy! Beauty! A blissful life was the pursuit of a pig's trotter.
The three generals with the highest combat power, the Four Emperors, the Five Old Stars, and the ancient weapons! The final BOSS, Lord Yim! Who could compete with him?
- Please recommend me! Please collect it!
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One Piece: The Black Throne was a light novel by the author, Brave Flow Boating J, and it was a derivative doujinshi novel. The general plot of the novel was:

Revengers would endure humiliation and endure hardships. Even if they were to become enemies with the world and be crushed into pieces, they would still make a mess! In the world of "One Piece," thousands of boats were sailing in the sea, and hundreds of boats were fighting for supremacy. In this era where heroes rose up together, would they choose to drift with the waves like a small boat or stand tall like a reef and leave their own legend in this violent sea? One Piece Doujinshi, no ship, boss-type protagonist. An ordinary person transmigrated to the era of the great pirates after One Piece Roger's death. Tragically, he became a slave of the Heavenly Dragon people, suffered torture, tasted the evil of the world, and tried to overthrow the world government after freedom. Book friend group number: 464579403.
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One Piece: Tricking Luffy into Joining the Army, Changing the Plot to Become Stronger was a manga novel written by the author. The general plot of the novel was:

He had transmigrated to the world of One Piece, and before the plot had even begun, the rebellious system had awakened."I want to become a navy general!" [Congratulations on changing Luffy's ambition and making him work hard to become a navy general. You have received 2,000,000 Rebel Points.] [Congratulations on successfully instigating the Yellow Ape to defect. Reward: Natural Fruit…Congratulations on obtaining the Dark Fruit.] As long as you change the plot, you can become stronger! The world of pirates will be completely rewritten by me!
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One Piece: My Domination Crushes the Four Emperors was a light novel by the author, Egg Tart. The general plot of the novel was:

The new book has been released and signed! [Infinite: Start slaughtering the world from the Strange Three Kingdoms!] Unlimited novels, with history as the shell and original plot. Friends, support me! The link below went straight to:
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One Piece's God-Level Summoning was a light novel by the author, Little Wang Ce. The general plot of this novel was:

[One Piece has ended] Wang Ce was tricked by the system into the Naruto World. He originally wanted to develop in a wretched manner, but he realized that the way he became stronger was all by relying on his mouth. Ding!"System Quest: Please create an identity for yourself and convince the Ninja Realm to believe in your fabricated identity. The duration of the quest is three years. The rewards will be determined by the degree of completion of the quest! [Friendly reminder: The more high-profile you are, the more unbelievable your identity is, the better the rewards you will receive.] From then on, Wang Ce would never return to the path of bluffing people. Faced with the Ninja Realm expert's question, Wang Ce told him frankly. "I am the young master of the Celestial King Pavilion, Wang Ce!" Pirates, Divine College, Naruto, Marvel, Battle Aura, Heaven Covering... One world after another is about to open.[The Order is Uncertain] I wrote another One Piece. I guarantee that I won't miss out on [One Piece's Opening Imitation of Lord Stripe].
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One Piece: The Strongest Color of Knowledge was a light novel by the author, Eight Directional Flags. The general plot of the novel was:

With the halo of a top-notch experience, he rode the great sea route, picked up beautiful women, and fought the four emperors. Who cared about the Pirate King?