One Piece fanfiction + Battle Mage + Single Female Lead (Kuina) + Thrilling story set in the Great Pirate Era! Lin Feng, Battle Mage! Roaming the seas! With his Fire Dance Spear and Flowing Flame in hand, who can stand against him! With his Evil-Repelling Spear! Sweeping across the eight wastelands! I, Lin Feng, will surely uphold my justice, punching the Celestial Dragons and kicking the Five Elders! Sengoku: Lin Feng killed another Celestial Dragon? Garp: Well done! Uh, never mind. Shanks: The sea will change because of Lin Feng's appearance.

[Crossover anime + invincible later on + no system, current world order: Bleach - Fate - Oni Blade - Naruto - One Piece]

Tianji transmigrated to the world of Bleach. Knowing Bleach well, he originally thought he could make a name for himself, but fate played a joke on him. Tianji transmigrated to 1,500 years before the main storyline. At this time, there was no Shinigami Academy, and even the Gotei 13 had not yet been formed. The only one protecting the Soul King was the Zero Division, which only had two members.

That's not all. I thought I could finally enjoy life after defeating the Grim Reaper, but then I was transported to another world.

Digimon Adventure 2

The Birth of Doraemon: Nobita's New Little Life

Wind and Cloud

Holy Grail War

Roger Era

Jackie Chan Adventures

The Prince of Tennis

Super Demon God with Pokémon Halo

Naruto

grim Reaper

...

After being struck by lightning and transported to the world of One Piece, Lin Hai merged with the Rainbow Mist, with one part being absorbed into his body and the other drifting away with the wind.

Lin Hai, who had planned to live a peaceful life, never expected that his body would become uncontrollable and allow him to travel to other worlds. Being too weak and too afraid to go alone, he had no choice but to join the Straw Hat crew, whom he could trust, for a world adventure.

What he didn't know was that each time they traveled through time, another rainbow mist would open, bringing people or things from other worlds into the world of One Piece.

What kind of future will these changes create...? Let's wait and see!

Changes in the One Piece World

Lelouch

Lu Bu (Valkyrie)

Batman, Joker

The Nangong family

The three generals of Bikini Bottom

Navy Old Man Luffy

The Machine That Dropped Food (First Big Gathering)

Madara Uchiha (old age)

Royal power never fades.

Inazome, Ichigami

...

Starting from chapter 332, you can return to the worlds you visited together!

Sarred Doug, upon transmigrating, found himself at the scene of a gang war. Just as he was struggling in agony, the Interception System arrived, and Doug relied on it to grow stronger step by step!

Stealing the Golden Lion's position as Rocks' second partner rewards him with top-tier swordsmanship talent.

He intercepted Loki and became Loki's guide, rewarding him with the physique of an ancient giant.

God Valley saved Teach, thus changing the course of the world and rewarding him with the appearance of a king.

He intercepted the bear and Ginny, changing their tragic fates and obtaining the Twelve Supreme Grade Swords, Aragami!

They intercepted the Azure Dragon Fruit, stripped Kaido of his title as the strongest creature, and rewarded him with an extremely powerful physique comparable to that of an ancient giant!

They intercepted Barrett, a descendant of a demon, and Barrett ate the Azure Dragon Fruit, which rewarded him with Conqueror's Haki: Voice of All Things!

The Marineford War changed Ace's inevitable demise, rewarding him with a special application of Conqueror's Haki—a punishment! Specifically designed to counter Im's immortality!

A man of sound mind, Whitebeard Jr., under Whitebeard's leadership, participated in the Marineford War!

Teach became the executioner's blade in the slaughter of the Celestial Dragons!

Doug's influence has spread to the underworld, the CP organization, and the pirate faction.

He recruited the Whitebeard Pirates to build the world's strongest pirate crew, punching the Marines, kicking the Five Elders, and even holding off Uranus!

Little Im! Hold on tight! Hold on tight!

Ling Bai transmigrated into One Piece and arrived at Impel Down's Infinite Hell, where he signed in to obtain the Ice Imperial Arm! There were still two weeks until the Marineford War! "Demon descendant Bullet, want to make a big splash?" "Crocodile, do you crave freedom?" "Shiryu of the Rain, do you have a choice?" "We are invincible before us!" He signed in to Esdeath's Ice Imperial Arm, Natsu's Dragon Slayer Magic, Misaka Mikoto's Railgun… When the Marineford War arrived, the world trembled at the sight of Ling Bai and his companions descending from the sky! Sengoku: This era is named Ling Bai! He ushered in an era even more terrifying than the Great Pirate Era!

This is the world of Naruto. Clans, bloodline limits, systems… none of these matter to Xue Ge. He transmigrated to this world, but before he could even process what was happening, he lost an arm, a leg, and an eye. His lost limbs could only be replaced with prosthetics; taken in by Danzo, he experienced hellish training. “I won’t die… I can’t die! Roar, Dragon Vein!” “That’s enough. Here we go, Urashiki!” “Uchiha Madara, are your White Zetsu reserves enough?” “Sage Art!—” Xue Ge has nothing. Bloodline limits, clan power, cheat codes… his starting point is negative one. He will stir up the entire ninja world step by step.

Possessing 99 series cheat codes, they become stronger through their own efforts! Initially, the Xia Zuo's (Shazam's) support was the Hokage Xia Zuo, so they were all quite cautious. Hokage Xia Zuo: I just want to protect my sister Izumi. Marvel Xia Zuo: I want to protect Skye. Bleach Xia Zuo: Aizen, you can't see me. One Piece Xia Zuo: I, I, I don't want anything. Then, the Xia Zuo with spiky hair and a tail appeared, and the Xia Zuo all got carried away. Hokage Xia Zuo: Hagoromo, pour me some tea! Kaguya, give me a foot massage! Bleach Xia Zuo: Aizen, you're holding us back, get back to work! One Piece Xia Zuo: So your name is Im? Marvel Xia Zuo and the Dragon Ball Xia Zuo, the one with the cheat code, looked at each other: Let's be patient a little longer, there will be an even bigger cheat code, there definitely will be, 555

While other transmigrators were still diligently practicing ninjutsu, Izumi Masamune had already turned the Naruto world into a strategy game with the help of the system—wait, who says saving the world and falling in love can't happen at the same time?

Reincarnated as Hyuga Neji, he awakens a cross-dimensional system. Free from the constraints of the Caged Bird Seal, he's given the "blessing" of endless evolution and random missions. He punches the Otsutsuki, kicks the Five Kage Summit, and effortlessly maxes out Hinata, Kurenai, and Anko's favorability? But just when he thinks this is just a typical action-packed leveling-up story, the system prompts: "[Contractor can be taken to the main world]"—Wait, am I saving the ninja world?

The leaves of Konoha still dance in the air, but the real storm has only just begun. When the genius of the Hyuga clan unveils the truth about Kaguya, when the light of the contractors transcends dimensional barriers—are you ready to embrace this chaotic yet addictive Naruto world?

[One Piece] [Following the Ship]

The power of two Tremor-Tremor Fruits appeared during the Marineford War!

Could the emergence of two world-destroying forces change the outcome of the Marineford War?

And it all started when our protagonist, Bai Yun, traveled through time and met Luffy as a child.

......

As the saying goes, when you're down on your luck, even drinking cold water can cause you to choke.

Bai Yun made a casual remark, and then suddenly died and was transported to the world of One Piece.

Yes, there is a system.

What do you mean by coming out to make a sarcastic remark, then handing over a fruit and running away???

[Momonosuke is doomed][Nation-building strategy][No fuss][Summoning strategy][Naruto]

My name is Uchiha Mirai, a transmigrator!

I had just arrived in the Naruto world and hadn't even figured out what was going on when the system sent me to the One Piece world. But I panicked because this is Ohara!

Fortunately, the system bound it in time!

[Ding! The "Many Children, Many Blessings" system is being bound!]

The higher the score for the opposite sex, the greater the reward!

[Ding! Congratulations to Nicole Olvia on the birth of her child. Reward...]