Dimon was summoned to the pirate world as a demon, and the starting point was Beehive Island.

Luckily, the devil's skills were powerful enough to allow him to easily join the Rocks Pirates.

The initial skill is to make the wine of immortality. Whoever drinks it will gain the power of immortality!

As a demon, Damon can devour the undead, gain their experience and knowledge, and achieve his own success.

If you swallow a devil fruit, you can unlock more powerful devil skills!

In 1482, the era of great oppression before the Great Age of Pirates, everything began with the immortal Rocks Pirates...

At the beginning, he became Luffy's brother, went to sea with Luffy, became the vice-captain of the Straw Hat Pirates, and after leaving Luffy, he became the admiral of the navy. Let's wait and see what kind of actions he will make in the headquarters of the navy. ... Kizaru: Oh my, this generation of supernovas is too scary. Hawkeye: My position as the world's greatest swordsman is no longer secure. Sengoku: Garp, look, your grandson is causing trouble again. Liu Luo: Let me see which pirate is causing trouble again.

Veldin: "I am your Si Chen, so do you want to escape?" Skadi: "We agreed to be a lifelong deep-sea hunter." Flawless Butterfly: "There is no boundary between death and death, your Excellency said it yourself." Gillian: "The empire is divided into two halves, we must form a second empire!" Necromancer Wanqi: "My original wish was really just to escape from that prison." 1999→Arknights→Collapse of Iron→Warhammer 40K (Cute Sister Regent Version) This is a light-hearted and happy story (thumbs-up).

Asuma Sarutobi, son of the Third Hokage, travels through Konoha and becomes his father. He carries a 35 million ryo bounty. Faced with this distorted world, Asuma Sarutobi expresses frustration, but thankfully, he has a cheat code. Any ninjutsu can be infinitely improved. The strongest Hokage? It has to be me! [Ninjutsu Style, Senjutsu Style, Self-Blooded Kekkei Genkai, Kekkei Elimination, Kekkei Net, No Eye Gouging]

After traveling through Demon Slayer eighteen years ago, Kamishiro Mitsuteru thought this was just an ordinary ancient world.

Until the night of the blood moon, the evil spirits tore his warm home apart.

When you are on the verge of death, the sign-in system is activated!

[Congratulations to the host for receiving the Newbie Gift Pack: Nature-type Sparkling Fruit! ]

The body instinctively transforms into elements to avoid the fatal blow!

He raised his hand and pointed, and the holy light penetrated the evil ghost, evaporating it instantly!

The loud noise attracted the dying Kanae Butterfly, and the Second Upper Moon, Douma, who was standing in front of her.

Under Kanae's desperate gaze, Kamishiro Kouki transformed into a beam of light and kicked Douma half of his body away at the speed of light. He sneered and said, "Sorry to bother you. But you can die now."

Let's take a look at the Demon Slayer fanfiction

Ashina, the land of reeds, half-knelt on the ground, looking at Kuro who was unconscious in front of him.

......

"Please live on as a human being."

He swung the immortal sword "Bai Lei" on his neck, and the blood that should have splashed out turned into flying cherry blossoms floating on the reeds.

——————

During the Taisho period, in the alleys of a remote town, a lifeless body glowed with a pink divine light.

"resurrection"

A lifeless, thin figure sat up from the rain.

"Where is this..."

At this point, the Son of God and his Ninja Wolf, although in two different worlds, are both reborn at this moment!

Traveling through the world of Demon Slayer, Shigure opens the role-playing system of the universe.

The higher the missions completed and the degree of character restoration, the stronger the power gained.

The first task required at the beginning is Bai'e.

"? Bai'e beats Wuzhan? Doesn't having hands do that?"

[Player progress reaches 15%: Unlock the weapon "Dawn Invasion"]

[Player progress reaches 30%: Unlock the form "Fire Walker"]

[Playing progress reaches 50%: Unlock the form "God of Evil"]

"Nanook... uh no, Muzan Kibutsuji, I bring destruction upon you!"

Muzan Kibutsuji: "No red blade? No markings? Are you also a pillar?"

Shigure: "Pillar?... Pillars are considered pillars."...

Muzan Kibutsuji: "It's useless. Unless I wait until the sun rises, I can be resurrected even if only a piece of flesh is left..."

"I am"

"?"

"The blazing sun will eventually rise!"

[No system][Enhanced version of the meat ball fruit][Unveiling onepiece]

At the beginning, he traveled to the body of a four-year-old boy named Jabbar Herro in the Valley of the Gods. Without a cheat code, he could only rely on risking his life to get the Meaty Fruit.

Roger: "Why did you join the Roger Pirates?"

Hiro: "Of course, to turn the world upside down and become the freest person on the sea!"

After successfully joining Roger's pirate group, Hiro used the power of the Meat-Glob Fruit to cure Roger's illness.

Roger was no longer tormented by illness.

Afterwards, he successfully followed the Roger Pirates to the "Final Island" and learned the secret of One Piece.

Want to know the secret of onepiece?

Let me tell you!

Unexpectedly arriving in the world of Naruto, Uchiha Chiren desperately trains to save his life. He nearly escapes assassination after calling Danzo a eunuch and is sent to the battlefield as cannon fodder. Fortunately, he awakens a system that allows him to choose an ability from his opponent after each battle. [I choose Uzumaki Physique] [I choose Spirit +1] [I choose Constitution +1] [I choose Eight Gates Ninjutsu!] [I choose Flying Thunder God!]... Initially, Shimura Danzo was ecstatic, hoping this second battle would end Uchiha Chiren's fate. Unexpectedly, all his previous machinations proved ineffective, and Chiren even managed to activate his Mangekyō Sharingan. Years later, Chiren stands in the Hokage Building, addressing Shimura and the Sarutobi clan below with a hearty laugh. "Shimura Danzo, Sarutobi Hiruzen, this is your teacher, Senju Tobirama, right? Look! Today...