Chen Yan travels between worlds, ending up becoming an honorable prince in a medieval fantasy world. Yet this world was not quite as simple as he thought. Witches with magical powers abound, and fearsome wars between churches and kingdoms rage throughout the land.

Roland, a prince regarded as hopeless by his own father and assigned to the worst fief, spends his time developing a poor and backward town into a strong and modern city, while fighting against his siblings for the throne and absolute control over the kingdom. Join Roland as he befriends and allies with witches and, through fighting and even farming, pushes back invaders coming from the realm of evil.

At the beginning, Ron traveled through the pirate world and broke into Im's daughter's body. He was killed instantly, reborn in Windmill Village, and awakened the pirate main system!

Ability to overcome the sky: As long as the target meets the subsystem binding, the subsystem can be distributed to the target? The rewards obtained by the subsystem are returned tenfold!

Ron: Okay, now it's time to have some fun.

Sabo's strongest krypton gold system, Ace's strongest punch-in system!

Distribute the [God-level Selection System] to Luffy.

Luffy: System, if I knock him away I can have meat, right?

Distribute the [Strongest Pretending and Slapping System] to Usopp.

Usopp: I have eight thousand subordinates, tens of thousands of younger brothers, and admirers all over the East China Sea!

Distribute the [God-level Sleeping System] to Zoro.

Zoro: You want to fight? Let me take a nap first, and watch me dream three thousand times!

Give Sanji the [God-level Beating System].

Sanji: If we're brothers, come and kill me!

Distribute the [Most Powerful Treasure Hunting System] to Nami, and she actually dug through the underworld with just one shovel? !

Distribute to Chopper【.....】

Until everyone in the Straw Hat Pirates had a system, the entire pirate world changed!

.....

Kaido: What? The strongest creature in the world? Every member of the Straw Hat Pirates is the strongest creature!

Sengoku: Garp, this is what you call adventure? Your grandson is going to grab the gold from the sky!

Hawkeye: Zoro is a gifted kid. He can master my swordsmanship at first sight!

Five Elder Stars: When did the Straw Hat Pirates become the Ten Emperors? Captain Ron, the Emperor?!

..........

After traveling through the pirate world and becoming a prisoner in Impel Down, Wayne lives a life worse than death every day. Fortunately, Wayne has the Ten Thousand Worlds Commission System.

You can get various rewards by completing the commission.

[Commissioned Order: The Pirate King's Last Wish - Help Roger take care of Lu Jiu until Ace is safely born.]

Rewards: 1. Roger's power (current state); 2. Roger's domineering aura (peak)

[Commission Order: Make Trouble in Marijoa - Protect the World Government for Shiki the Golden Lion, and attack Marijoa]

Reward: Floating Fruit (Awakening)

After inheriting Roger's legacy and Ski's Float-Float Fruit, Wayne discovered that he was terrifyingly strong.

He beat Mary Geoise and became the worst criminal in history in the eyes of the World Government!

But in addition to this, Wayne has multiple vests.

He is the founder of Candy Baby magazine, runs the World Beauty Pageant, and is the man behind all the Miss Worlds;

He is one of the Seven Warlords of the Sea. The arms company he founded single-handedly sparked the world arms race, earning him the nickname the Arms King.

He is the leader of the Chaos Ladder organization that the World Government fears. Barrett, Crocodile, and Red Earl are all the Apocalypse Knights under his command.

He is Kaido's partner and Big Mom's guest;

He is...

Wayne has many titles, but in the end, people call him the King of the World!

Luen journeyed through the pirate world, gaining access to the most powerful stat system, allowing him to plunder other people's stats. Looking at the golden stats on the Deserter King Coby, Luen exclaimed, "You clown, you deserve it? Take it!" Then, Luen plundered even more powerful stats. Marine Headquarters: "He is a monster capable of devouring and robbing everything, the most vicious esper in history. Without permission from the highest levels of the World Government, you must not engage him! The world's most dangerous man! 'King', Luen! Live or die! Bounty: 3.9889 billion berries!"

All Things of this World, Turn to Ashes, Flowing Blade-like Flame!

Crossing over to the world of pirates(the one piece world) , in the era of pirates, the Roja from eleven years ago obtained a Sword Soul system that lets him strengthen infinitely and extract various kinds of skills.

Flowing Blade-like Flame (Ryūjin Jakka) , Mirror Flower, Water Moon (Kyoka Suigetsu), Moon Fang Heaven-Piercer (Getsuga Tensho), Thousand Cherry Blossoms (Senbonzakura)……

“If this sword descend, you may be roasted to death.” Roja looked at Akainu in front of him and seriously said.

Su Chen traveled to the pirate world with a magician's inheritance.

After learning most of the magic, he met Luffy who had just set sail and accepted the invitation from the future Pirate King.

What kind of collision will occur between the gorgeous and magical magic and those magical devil fruits?

Nami, come here, let me strengthen your wind-type celestial magic!

Usopp, do you know about the magic bow and various attribute ammunition?

Sanji, do you want some top-quality ingredients from around the world? And some invisibility magic?

Hey, Robin, everyone has their own meaning of existence. If you don't even have the courage to try, you don't deserve happiness at all!

After being strengthened by Su Chen, would Luffy and others still watch Ace being killed during the Battle of Marineford?

All regrets will be made up!

As the youngest chef ever to headline a state banquet, Yun Ting wakes up to find himself adrift in the ocean, accompanied by a giant panda named Po and a blue-and-white British shorthair named Tom. Unexpectedly, this is all a prank by a ruthless system, leaving Yun Ting to conquer his guests with his culinary skills! P.S.: Because the previous plot isn't well-controlled, those who don't want to read One Piece can start from Chapter 68.

Luo Lan traveled through the pirate world, becoming captain of the Whitebeard Pirates' Squad Zero and activating a god-level manga system. He knew full well the fate of the Whitebeard Pirates at Marineford. So, he retreated to gain experience and improve his own strength. With the Battle of Marineford imminent, Whitebeard needed a period of intensive treatment due to health issues, so he temporarily appointed Luo Lan as acting captain of the Whitebeard Pirates. Months later, when Whitebeard completed his treatment, he was utterly stunned! Marco: "The Undying Flame is the true way to activate the Phoenix Flame!" Jozu: "Eighth Death Gate, open! Who can withstand my [Night Jozu] move?" Vista: "When I master the dual-sword style, my Zanpakutō, Nosei, that's when you prepare your final words!" Little Oz: "The super-multiplication technique in Butterfly Transformation Mode is so fascinating!" ... Whitebeard: "I asked you to temporarily take charge of our group, and you've actually raised the captains' strength to that of a general?!!"

(Devil Fruits + Haki + hand-to-hand combat; dual strong leads)

A teenage boy transmigrates into the vast world of pirates and refuses to accept a world ravaged by them: “Let me save it.”

Kaido, beaten down by his fists, admits, “As expected, Haki stands above all. Noah, kill me.”

Hawkeye Mihawk, battle intent surging: “Noah, let me witness the spirit of the world’s strongest.”

As Pangaea Castle begins to crumble, Noah declares to the world:

“It isn’t—nor should it be—the pirates who save the world, but the Marines. And I’ll tell you this: the Celestial Dragons will bleed, and they will die.”

Su Chen, transported to the pirate world with a magician's legacy, learns most of the magic before encountering Luffy, newly at sea, and accepts an invitation from the future Pirate King. How will this dazzling and magical magic collide with those wondrous Devil Fruits? Nami, let me strengthen your Wind Magic! Usopp, would you like to learn about the Magic Bow and various attribute ammunition? Sanji, would you like some premium ingredients from around the world? And invisibility magic? Hey, Robin, everyone has their own purpose. If you don't even have the courage to try, you don't deserve happiness! Would Luffy and the others, strengthened by Su Chen, still have to watch Ace being killed during the Battle of Marineford? All regrets will be made right!