He transmigrates to the Naruto world with a Devil Fruit system, becoming Kakashi's older brother, and watches as he rises to become the strongest ninja. (The plot will not be significantly altered.) Semi-invincible, no harem elements.

"Reincarnated into the Hyuga main family, becoming siblings with Hinata Hyuga. Knowing the plot's direction, Fuyuki is a little panicked... When the time comes, what should he do when the ancestor Kaguya rises from her coffin? Should he... accept the ancestor's lack of martial arts skills, or become the ancestor's obedient grandson? Fuyuki, holding the 'Summoning Scroll of the Whirlwind Demon Society,' fell into deep thought. ...Keywords: Naruto, Konoha"

The world of One Piece, the simulated world currently includes: Zero's Familiar, Jobless Reincarnation, Life in a Different World from Zero, to be determined...

"My treasure? Give it to you if you want it, go find it! I put everything in the world there!"

The death of One Piece, who forced a wave of advertisements to the whole world, also heralds the coming of the era of great pirates.

The lumberjack boy on Hongye Island looked at the headlines in the newspaper, but his expression showed melancholy...

"You have the talent to become a chef, but you're too old and have no chance of becoming a head chef." Tang Daoan, rejected by multiple restaurants, was filled with resentment when the God of Luck gently awakened his dormant mind and transported him to the world of Food Wars! He strives to become the world's number one Western restaurant chef, searching for his own recipe for life!

[Starts normally + gradually gets weird + weird + absurd + ... sigh, I'm just playing around! Note: Original shippers, please do not enter; things will become inhuman starting from chapter 400~]

Lin Yu transmigrated to the Uzumaki clan in the Naruto world. After ten years of hiding, he finally awakened the mission system, and from then on...

Mission: Obtain a title from Hanzo.

Mission: Obtain a title from Uchiha Madara.

Mission: To trick Nagato into confessing his feelings to Yahiko.

Mission: Lure Jiraiya to spy on Orochimaru bathing in a hot spring.

Mission: To get Obito to personally meet Kakashi.

Mission: Punish Madara by carrying Hashirama in a princess carry.

...

Lin Yu internally screamed: System, you're acting more and more strangely. Is it too late for me to return this item?

I've traveled to the world of Uma Musume and gained access to a 2D armor system. Yay!! Let's do something, let's do something! Do you like this Uma Musume armor with 2D templates? ... Amusement Park Knight (Platinum): "I don't feel like working hard today. Want to go out for a stroll in the city with me?" World Devourer (Mobius): "Little white mouse, where do you want to go? Let's play some games~" Qiqi's Favorite (Ganyu): "Want to work overtime with me, Miss Luna?" So! Say! Isn't this a good idea? Right?

At the start, I awakened the Fish-Fish Fruit, Mythical Zoan type, Azure Dragon form.

You have a bloodline limit, I have the power of a Devil Fruit.

You have ninjutsu, I have the three types of Haki.

Nine-Tails: I am the strongest tailed beast. Shimura Kiyonami: Take my dragon's breath.

Hashirama: His regenerative abilities are comparable to mine.

Madara Uchiha: So there is a power in the world that can rival the Rinnegan.

Obito Uchiha: Compared to his power, my Kamui is nothing more than a delaying tactic.

Kaguya Otsutsuki: Before him, I am no longer a god; I am merely a woman.

Kiyonami Shimura: The peace you seek is laughable; you ignite the world with war, seeking peace through conflict.

A country boy, full of dreams, stepped into the labyrinthine city of Orario, only to be quickly slapped in the face by reality. The city didn't welcome him with adventure and battle; Koya, without a familiar to take him in, was forced to work as a laborer for the Loki Familia. "So this is the hero I'm going to raise?" [Yes, Himeko-san.] "What are you for?" [I can do anything you want, and even things you dare not imagine. So spend money, Doctor!] "Mora? You only need Mora?" [Mora is all you need; this is our contract, Ningguang-san.]