Official Introduction: Now approaching you is: Muzan's nightmare, the destroyer of the Twelve Demon Moons, the head of the Infinity Castle demolition office, the most righteous person in the Demon Slayer Corps, Sabito's savior, the eternal absentee of Kanae Kocho's tea party, Giyu's good senior brother, the founder of Fist Breathing, and a grandmaster.

Willow branches provide shade, that's it!

Kanae Kocho: "I invited him to a tea party ninety-seven times, and he refused ninety-seven times. He's so gentle."

Shinobu Kocho: "Why should I be trained by iron fists? It's infuriating, sister!"

Akaza: "A powerful person, the best in physical combat."

Muzan Kibutsuji: "A monster who destroyed all my Demon Moons with his bare hands and blasted the Infinity Castle to pieces, you call him human?!"

Unofficial synopsis: Yagyu In transmigrates to the world of Demon Slayer, but the system believes he is in the world of One Piece and identifies him as a Marine.

You can earn Navy Points and rewards by doing things that are in line with the Navy's rules.

Yagyu In: No, buddy, is this right? Where did this pirate from the Demon Slayer world come from that I need to catch?!

Pirates are attacking! Strike immediately to capture or kill them!

Looking at the man-eating ghost before him, Liu Shengyin realized that the system had gone mad.

From then on, the Demon Slayer Corps had one more instructor who liked to smash people's heads with his iron fist of love.

This book is also known as "Left Fist's Overpowering Entanglement Deals High Damage, Right Fist's Overpowering Entanglement Deals High Damage," "Three Punches Shatter Evil Spirits, Sir, I'm Just an Ordinary Person," "Overpowering Aura is Also Qi, and Qi is Breathing Technique!" and "Muzan, Are You Hiding Well? The Marine Admiral is Coming to Get You~"

Note: This book is a crossover anime/manga series, and will later explore other worlds.

What's it like to transmigrate into a vampire?

Lilith said it was alright.

It's at least better than being reborn as a wild beast, right?

What would it be like to travel to the world of Naruto?

As long as it's not a garbage like Warhammer, even if Naruto is more dangerous and has various overpowered abilities later on, with the vampire's power, it's hard to say who will win or lose.

After all, traveling to a familiar world is better than traveling to a world you know nothing about, right?

But the question is, why are there so many random and nonsensical things in the Naruto world?!

Zombies, werewolves, slimes, skeletons and all sorts of things suddenly appeared.

What? Has the world been riddled with holes? Is everything leaking out of it?

Lilith: "It's a bit chaotic, but there's some good news too. At least there's more food. Isn't that right?"

Sun Dasheng signed with the Lakers in 2008 and won the championship with the team in 2009, becoming the first Chinese guard to win an NBA championship; McCaw won two consecutive championships with the Warriors in his rookie season and then joined the Raptors to achieve a three-peat, which can be called a "moving dynasty"; what kind of miracle will be created when these two championship guards are combined in one person?

[Starting 56 years ago, no system, Rocks Pirates, has cheat abilities, two Devil Fruits, original Devil Fruit]

As the smoke of war dissipates and the glory of heroes intertwines with the aftershocks of tragedy, the shadows buried by history quietly awaken!

The "Demon King's Legion," which once dominated the seas, reunites at the most unexpected moment!

Lin Xuan, an unlucky guy who was hit by a truck and turned into Lin Xuan-chan, was split into countless parts and transmigrated to different worlds, each of whom awakened their own unique talent. Watch as he rises to the pinnacle of each world.

[Legend of the Dragon King] + [Words of Power] + [Bloodlust] + [Dual Female Leads: Gu Yue, Na'er] + [Anti-Three-Fold] + [Group Commitment] + [Invincible Among Peers] The author is a newbie and can't write without group composition... Yu Chen transmigrates to Douluo Continent, either through three cuts to become a god or 20,000 years later. He initially thought he was powerless to resist its millennia-long plan and planned to live a hapless life in a newbie village. However, his cheat ability arrives, causing his martial soul to mutate into golden eyes and gaining Nidhogg's dragon blood, directly embarking on the path to godhood. Later, he attracts the fallen dragon souls of this world to pay homage, becoming the newly reborn "Dragon Emperor" of Douluo Continent, which gives him a different perspective. He then "kidnaps" Na'er, flirts with Gu Yue, and takes Tang Wulin as his follower. After growing up, he begins to change the landscape of Douluo Continent. Shrek Academy is bombed, many Title Douluos die in clashes between various forces, and two god-slaying soul-guided cannonballs...

He travels to the Marvel universe and obtains a cheat ability called "The Strongest Demon Hunter," but little did he know that this cheat ability would be extremely unreliable.

"System, do you even know what a Demon Hunter is? Look at this utter mess you've given me!!"

With the bonds of family and friends, Carl began his colorful life in the Marvel universe...

[This is based on the movie's plot; there may be some changes to the timeline and storyline. Please excuse any inconvenience.]

[Mastermind behind the scenes + power building + all members are Stand users + high intelligence + invincible protagonist]

"If this arrow is thrust in, one will either die or become a new god."

Yahiko is reborn in the Land of Rain, wielding an insect arrow that can grant mortals the ability of a "Stand".

Ninjutsu? Hand seals are too slow!

Check out my Akatsuki organization:

Konan awakens her SSR-level Stand, "Heaven's Gate," which turns people into books, allowing her to freely modify their memories and loyalty!

A black market merchant awakens the rule-based Stand [Earn Without Earning], building a financial empire that endlessly exploits assassins!

While Konoha was still researching new ninjutsu, Amegakure had already become the "Las Vegas" of the ninja world. On the surface, it was a den of iniquity, but in reality, it was a legion of substitutes with bizarre abilities.

Obito: "I only wanted to carry out the Eye of the Moon Plan, but Yahiko wants to devour the entire ninja world!"

Yahiko: "Dreaming is the escape of the weak. What I want is absolute dominance in reality."

The ratings have just been released, don't be scared away.

[Naval Fiction] [A Monster Within the System] [The Man Who Shaped the "Killing" Zephyr] [The Man Who Rewrote the Definition of "Justice"] [The True Teacher of the Three Admirals] [The Revolutionary Army Mentor] [The Man the World Government Could Not Judge] [The Naval Outlaw] [The End of the Old Era] [The Creator of the New Era]

In the era of Rocks, on the sky island of Biruka above the sea of ​​clouds, a boy named Rock, who was taken in as an infant and has memories of his past life, awakens superhuman perception during his ten years of growth. His Observation Haki is as sharp as the wind and as vast as thunder.

Their peaceful life was quietly changed by a strange "thunder" coming from the depths of the sea of ​​clouds.

In search of answers and to take control of his own future, Rock leaves his familiar village and heads toward the unknown source of thunder.

This journey will slowly unfold from the sea of ​​clouds of the old era.

This is a slow-burning, lengthy story, but one destined to ignite the entire world—

(This is a naval-themed story, not a shonen pirate adventure or a Straw Hat-style fairy tale. If you don't like this style, please stop here.)

(Rumble-Rumble Fruit user) (Marineford War MVP) (The man Im could never have) (Shanks and Buggy's lifelong best friend) (The plunderer of the Supreme Grade Swords) (The strongest in the world)

Looking back on Li Yuan's legendary life, he achieved countless accomplishments and defeated numerous enemies. But the turning point in his life was Roger's words after he traveled through time: "Hey kid, wanna board my ship?"

"Great, at least it's much more interesting than staying in this lousy place."

But after boarding the ship, Roger was surprised to find that there was an incredible monster on his ship!

...

Years later, facing a group of new-era pirates, Li Yuan uttered those world-shaking words: "Want to know what One Piece is? I'll tell you! ^_^"

(No system) (Non-harem) (Traditional One Piece system, with a touch of imagination)