When the socially awkward former Water Pillar Tomioka Giyu suddenly travels to the world of One Piece and is forced to bind to a baffling "Interpersonal Communication Manual" system, witnessing the Straw Hat Kid on the execution platform, about to be executed by Buggy, saving him, breaking the platform, and becoming entangled seem like the natural progression. Luffy: "Wow! What a cool move! Be my partner!" When the taciturn Giyu encounters the most free-spirited pirate group, this sea is destined to be turbulent by the least chatty swordsman. ... "Let's have a party, Giyu!" [Interpersonal Communication Manual] [Target: Monkey D. Luffy] [Status: Extremely Excited] [Preferences: Throwing parties, hanging on to the host] [Suggestion: ... (Analysis impossible)] Right now, that rubber boat captain is swinging from my only arm. What should I do now...

In the era of pirate riots, who is the real overlord of the sea?

The four emperors standing at the top of the pirates?

The mighty Qiwuhai?

A revolutionary army that emerges from the strong?

Or the navy that suppresses the sea?

No, not at all, there is only one real overlord of this sea.

"That's me, Fire Dragon Kahn!"

Kahn's life creed is: "As long as you pay, this old man can perform a hand-splitting dragon man!"

Kahn, formerly known as Xu En, has traveled through pirates for fifty years, and has become a vice admiral from a small soldier with his own efforts.

Kahn, who is already seventy-two years old, is getting old and is no longer in peak condition. He spends his days leisurely in the East China Sea. He has even submitted his application for retirement, and he is ready to die until his own life ends.

Congratulations to the host for reaching the system opening conditions, and the super money system is loaded!

The sound of the system interrupted his plan.

Kahn: "Can you buy life?"

System: "Yes, a portion of the water of life can restore the host to its peak state."

Kahn: "Is it possible to live forever?"

System: "Yes, a portion of Eternal Water can completely free the host from the restriction of life."

"Are there any devil fruits?"

"have!"

Kahn was instantly overjoyed.

"Hancock, wait for me, I'm just old, not dead!"

But then Kahn was taken aback.

"How much are these two things?"

"The water of life is 20 billion Berries, and the water of eternity is 500 billion Berries."

Kahn:? ? ?

Then, looking at the oil and water that I had worked hard for several years, the feeling of satisfaction disappeared instantly.

In the end, he decided on a goal, first earning 10,000 small goals before considering retirement!

[Starting with the Star Devouring Method] [Decisive Killing] [Not a Saint] [Doing anything to become stronger] [Outside the Territory Demon] [Slaughtering the Heavens and the Worlds]

Wei Yuan starts by practicing the Star Devouring Technique, and can become stronger by sacrificing the origin of the world.

He transformed into a demon from outer space and began his journey of blood sacrifice to all realms.

Sacrifice the One Piece world to gain the talent of clones and 500 times the special life debris.

Sacrifice the Naruto world, and the life genes evolve 1000 times.

Sacrifice the Marvel world and gain recognition from the laws of time and space.

Sacrifice to the world of immortal heroes, break through the immortal gods, and have endless lifespan.

Sacrifice the ancient world, break through the God of the Universe, and create the universe with one thought.

Kill! Kill! Kill!

Sweep across all the heavens and worlds, and kill until no one dares to claim supremacy!

When Wei Yuan sacrificed all the heavens and worlds, he finally became the most powerful one in the heavens, and the name of the Emperor of the Burial Realm resounded throughout the past, present and future!

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!

The boy died, the girl lived.

When I opened my eyes again, I was not in a white hospital room, but in a cold, dark space.

There is no sun here, no earth, only deathly silence.

He also noticed something was wrong with her; she seemed to have been reborn, and not only did she resemble Hoshimiya Rokuro from the anime Date A Live, which he had watched before, but she also possessed magical spirit powers.

At the same time, she discovered that he was dead, his body beside her. Although she could not sense any signs of life, she felt as if she were still connected to him...

Suddenly, hope filled the girl's heart, and she decided to seek the realm between life and death, embarking on an unknown and long journey.

Her first stop was actually—

One Piece, Akame ga Kill!, Naruto, Re:Zero -Starting Life in Another World-, Overlord, Godslayer, Jackie Chan Adventures (in progress)

P.S.: The good news is that the author doesn't know how to write romance; the bad news is that the author only learned how to write exciting battle scenes.

Traveling through the pirate world, he was swallowed by the King of the Sea at the beginning, and then awakened the god-level [Cube Fruit]!

Everything in the world can be decomposed and reassembled! Others work hard to develop fruits, I directly read the data and synthesize it with one click!

While the navy was still showing off their pacifism, my 100-meter Diamond Gundam had already been assembled.

Everyone thought I was adventuring on the Grand Line...

They don’t know that every time I arrive at an island, I copy the data of the entire island!

The Battle of Marineford breaks out, and the eyes of the world are focused on the execution platform...

I printed a "Sky Island" directly above the Navy Headquarters! ?

【Follow the ship flow】【I am a navy all by myself】【System】

Ike, who was thought to be able to persuade Luffy to give up being a pirate, got on Luffy's ship instead. The worst thing was that he awakened the Justice Navy System. Fortunately, there was a letter of appointment from the Private Navy given by Garp, which turned all the just deeds done by the Straw Hat Pirates into the achievements of the Private Navy.

Arlong: So what if the Straw Hat defeated me? I'm still wanted.

Ike: Huh? We're a civilian navy, just flying the crossbones. Why are we wanted? One phone call and the warrant is immediately rescinded.

Crocodile: The Straw Hat Pirates are also in Alabasta, why doesn’t the Navy arrest them?

Navy High Commander: Hmm? They're a civilian navy, not pirates.

World Government: The Straw Hat Pirates destroyed Judicial Island and were immediately arrested.

Ike: Who said that? It was Spandam, that idiot, who pressed the Golden Den Den Mushi and destroyed Judicial Island. Our civilian navy was only there to eliminate Spandam, the culprit who destroyed Judicial Island.

"Only domineering power can rise above everything else."

This is a famous saying by Kaido, the gold-medal lecturer of the Grand Line, known as "King of Beasts," and is regarded as a guiding principle by countless people.

But Roy did not agree with this.

"Then let me ask you—if there were a user who could analyze and collect all the Devil Fruit abilities, and was unaffected by Seastone and seawater, could he reach the pinnacle of this ocean with his Devil Fruit abilities?"

To prove his point, Roy took action.

...

Many years later.

On the Red Line, the sacred site of Mary Geoise is ablaze.

At the top of Pangu City, the instigator stands in the sky.

The pristine white navy cloak fluttered in the wind.

"Do you want to be at odds with the world?"

When confronted with questions from the world's nobles, Roy simply grinned.

"Haven't I already been at odds with the world all along?"

He smiled.

Those who followed him emerged from behind him.

The figures leading the group silenced the entire scene.

Everyone recognized them.

They are all powerful figures who have suddenly risen to fame on the high seas in recent years.

Among them were assassins, revolutionaries, pirates, merchants, doctors...

Without exception, they were all extremely powerful ability users, and they all belonged to the same organization.

Legend has it that the organization has a mysterious leader who is now the most dangerous criminal in the sea.

Now, the facts speak for themselves.

"You, you are..."

A new generation of legends in the Navy.

The most dangerous criminal in the ocean.

They were the same person from the very beginning.

His name is...Loy Amos.

Lu Ming used to regard the Celestial Dragons as termites and scum. When he traveled to One Piece and became a Celestial Dragon, he found that being a Celestial Dragon was really nice. He could drink the best wine, play with the best women, and command the admirals to come and go at will. The only thing that made Lu Ming dissatisfied was that there were too many people sharing power with him. So Lu Ming sprayed his hair with hairspray and stood in the sky of the holy land of Mary Geoise: "This world only needs one Celestial Dragon!" PS: More women, more Celestial Dragons

Transmigrating from birth into the world of One Piece, he became the World Government’s strongest talent in 800 years: the CP9 killing machine, Rob Lucci.

By all rights, this should have been the ultimate overpowered transmigration. But thinking of his future self—first sent to work as a shipwright in the trenches, failing the mission, then treated like a roadside nobody, and finally returning as a king yet still mocked as “the Ultimate Brother” by the world—Lucci felt his prospects were completely doomed.

Fortunately, fate is fair. After enduring a hundred blows from Kaido, destiny finally took a turn.

“Kid, come aboard my ship and become my crew!” The Governor of the Beasts, the strongest creature, and one of the future Four Emperors—Kaido—laughingly extended his fist toward the young Lucci.

Thus, boarding the Beasts’ flagship, Lucci proved to the world the true worth of the strongest talent in 800 years.

He faced Red-Haired Shanks head-on with fierce dominance.

Duels with Mihawk in swordsmanship.

Brawled with Garp in hand-to-hand combat.

…Years later. On a calm day, the newly set-sail Merry welcomes a legendary man aboard.

“Want to become the Pirate King? Fine! Survive, and I’ll let you be!”