He traveled through time and became the cousin of Nara Shikamaru of the Nara clan in Naruto. Nara Shikahaku has a deductive transformation system. He said that although his chakra attributes are not enough and he does not have a special bloodline limit, he has a family secret technique.

What? You're saying the shadow isn't that long? The blood vessels in the human body are about 100,000 kilometers long. So, it's scientific that my shadow would become thinner and longer from the Fire Nation to the Water Nation, right?

Killing from a distance? Doesn't Shadow Seam allow you to concentrate chakra and thrust to kill? What? How do you break through the Lightning Release Chakra Coat? Doesn't Shadow Slap Technique increase strength?

How do you control the tailed beasts? Isn't the most basic shadow imitation technique enough? It's common sense that shadow imitation can freeze the body, right?

How can I defend against the Tailed Beast Balls alone? Gaara can use sand to defend himself, and the Raikage can also use chakra cloaks. Isn't it reasonable that my shadow can transform into a barrier?

Don’t disbelieve me, this is really a secret technique passed down from my family.

[The Subverter of Arbitrary Plots] [Brain-Blowing] [King of Stamp Collecting] As a player with a Resurrection Coin, Makoto stood atop the mountain, grinning wildly at the Five Kage: "Who dares to kill me? Who can kill me? I can do whatever I want!" — On Konoha's busiest street, the Third Hokage, Sarutobi Hiruzen, blushing, was forced to perform a monkey show. — Danzo Shimura, the public enemy of the ninja world, forced to dig deep underground, refusing to show his face, having shouldered so many accusations. — Makoto teased Uchiha Obito: "Rin, you're truly gentle." "You've already got your death!" Obito roared, his eyes bloodshot, panting. Makoto slowly pointed to the village entrance: "Don't get excited. Go to the village entrance and take two Tailed Beast Balls. Calm down, calm down." ... Konoha Spring. The supreme outer demon, the only Fourth Calamity, the wholesale source of ninja fun...

Starting as a commoner in a collapsing ninja world, after twelve years of grueling ninja academy graduation, I'm sent to the battlefield as a mere line-filling doll? In this desperate situation, the system successfully activates. [Ding! Rare Pawnshop Across the Myriad Realms, at your service.] [Rare "Uzumaki" bloodline detected...] [Pawn?] You mean rare means pawnable, and rare means valuable, right? Then let me ask you, how many clans were wiped out by Yoru in the Naruto world? I can confirm three: Uzumaki, Kaguya, and Uchiha. Why? Because I was involved in all of them, so of course I can confirm it! After all, my current name is 'Namikaze Uzumaki Kaguya Uchiha Yoru'.

What should I do if I travel to Naruto and have both parents?! I'll just make the best of it.

. . . . . . . .

In the Hokage's office, the Fourth Hokage was working when suddenly there was a knock on the door.

"Why are you here?"

"As the Hokage's advisor, I think it's necessary to create more fashion shows in the commercial streets, preferably featuring beautiful women."

"Well, I'm the Hokage. Didn't I already organize a fashion show last month?"

"Minato! You're going to regret this!"

"well!"

As the Sealing Master of Konoha, heir to the Root, and founder of the first Commercial Street Beauty Fashion Show, Asano Souji said: "Isn't it just the Victoria's Secret Fashion Show? We can hold it secretly. Watch me, the sealing barrier and the small black room technique. Let's go in one by one, don't crowd."

Introduction: Traveling through the world of Naruto, he was reborn in the Aburame clan, became Shino's brother Aburame Jimei, and obtained the inheritance system of Kurotsuchi Mayuri.

As long as he continues to research and invent, Kurotsuchi Mayuri will continue to be rewarded with knowledge.

Research parasites and develop them into symbionts, comprehensively enhancing both offense and defense.

Research the art of instant movement, develop the flying kick, and walk in the air regardless of the terrain

Study the corpse bone veins and learn about super-speed regeneration

Research......

After years of crazy research, development and sedimentation.

During the Fourth Shinobi World War, Aburame Thistle slowly drew her Zanpakutō. Impure World Reincarnation? Have you asked about my sword?

Thus, in the shocked eyes of the allied ninjas, a strange scene of one person chasing a group of people was born.

"I've never been happy being a ninja." Once the greatest cursed tool maker and now widely recognized as the greatest puppeteer, Scarlet Yellow Carp's words couldn't be more sincere. He simply enjoys studying various techniques, including ninjutsu, but that doesn't mean he harbors any undue inclination towards the profession of ninja. "Yes, that's right. Those puppets and forbidden techniques are simply my personal hobby, not directed against anyone." "In fact, while the overall structure of this 'Mecha God' follows the basic concept of puppetry, its energy system based on cursed energy reactions is more suited to my habits than puppets that require additional equipment bays to expand their application and attack range." What habits? Of course, it's the ability to overcome difficulties with numerical calculations without further discussion...

This book is also called "Soman: The Demon King Who Started the Naruto World"

[No system + multiple worlds + no qualifications to become Kamen Rider + multiple heroines + Demon King + OOC apology]

My name is Tokiwa Sougo, but I am not the little devil king, nor the old devil king. I am Tokiwa Sougo who traveled to the world of Naruto. I had no inheritance and felt that my life was over. But when I was just five years old, my complaints were heard by the old devil king, and I got an unexpected inheritance.

Tokiwa Sougo: I'm not a knight, I'm a demon king.

The story begins in a bloody mist.

The orphan Bamboo Cutter, slain by the Kirigakure Anbu, rises from the sea of ​​blood and corpses.

Her mutated gray Byakugan and the combined offensive and defensive Shikigakure (Shikotsu) combine to create the uncanny ability to manipulate her body, setting her on an inhuman path to becoming a physical ninja.

The Shikotsu strengthens her bones, the Byakugan manipulates chakra and her body, the Lightning Release Chakra mode strengthens her body, the Reverse Eight Gates replenishes her life force, she devours the Tailed Beasts to gain an infinite source of power and the Tailed Beast Coat, and possesses the indestructible power of the Monkey Demon... A beautiful girl, as delicate as a doll, becomes an inhuman physical monster.

The ultimate crushing of stats and mechanics, the terrifying contrast between her appearance and combat style, creates a Gokudo Hokage filled with blood and flesh.

(Non-transformation, single-player story, slightly dark, semi-invincible, no system, not a babysitter)

Hirakawa Seisui, a transmigrator reborn into Konoha. In the ninja world, where bloodlines reign supreme, he was merely a commoner ninja, destined to be cannon fodder on the battlefield. However, fate intervened; he activated the Medical Ninja System. Good news: the system boosted his medical ninjutsu talent to the highest level, making him a Primordial Healing Body. Bad news: it only enhanced his medical ninjutsu talent; on the battlefield, he was still just cannon fodder. "What a piece of trash system! If other transmigrators told me, they'd look down on me, thinking I can't afford a good system." [Completed healing Uchiha Mikoto, reward: one golden magic orb.] [Congratulations on obtaining a magic orb.]

【System + Naruto Fanfiction + Not Brainless + Vest + Realism】

Zheng Dongfang travels to the world of Naruto, using the alias Dongfang Zhen. He gains access to a system called "Daily Card Draw," where he can gain access to all the abilities of a ninja, including chakra, ninjutsu, taijutsu, and even bloodline limits! Reaching a certain number of draws fully unlocks the corresponding ninja card, granting permanent ninja abilities!

Dongfang Zhen: I want to create a new ninja world, let me draw out Madara and the First Generation!