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.

Lin Bai travels through the world of Souman, awakening the Atlas of All Things. Discover and illuminate Atlases to receive rewards. Light up your own Atlas at the start of the game, and gain the power of the Seven Royal Powers. Light up [Iwanaga Kotoko] to gain: Divine Protection of the God of War. Light up [Akayo Moeka] to gain: Type-Moon's Third Law. Light up [Lukoa] to gain: Authority of the Eastern Dragon God. Interacting with illuminated Atlas objects like Kuriyama Mirai, Gabriel, Lara Deviluke... earns Atlas Points. Reaching the required points will randomly awaken a conceptual ability. Infinity, Incineration, Freeze, Divide, Spacetime, Cause and Effect, Origin, End... Possessing limitless power, Lin Bai ascends step by step to the supreme throne. ...

【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!

[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...

[Invincibility + Entry + Starting Immortal Body + Tom Cat Template (Not a cat, please do not enter if you don't like it)]

Tang Mu traveled through Konoha and became an orphan with both parents dead. He thought his life would start in hell, but unexpectedly he loaded the template of Tom Cat and started with three incredible items: [Immortality], [Super Recovery], and [Learning Adaptability]...

......

......

Naruto (completed), One Piece (in progress)...

In the Age of Supernatural, everyone can awaken their talents, pursue extraordinary professions, and gain supreme power. High school student Jiang He awakens the talent [Time Transfer], allowing him to summon his future selves from different timelines to the present as Heroic Spirits, gaining access to their future selves' talents and skills. Thus, one Heroic Spirit after another makes his debut: the [Savior], who awakens the weakest of talents yet saves humanity from the end; the [Starbreaker], possessing an infinitely evolving body, battles the myriad races of the stars; the [Abyss Lord], [World Destroyer], [Conqueror], [Symbol of Peace], [Mechanical Devil], who can contract demons and ultimately rule the endless abyss... When Heroic Spirits and Evil Spirits gather, countless timelines converge. Rejoice! A being who controls endless timelines has been born...

[Lord of the People + Clone Post + Lone Wolf + Explosive Soldiers + No Suppression + Decisive Killing + Domination of All Races] A war game suddenly swept across the entire Blue Star on this day. Everyone will travel to another world to become a lord, summon troops, expand territory, and capture cities! Qi Lin traveled here with excitement, but he didn't expect that the soldier he awakened was a peasant. What a hell of a start! Fortunately, everyone who travels here will awaken a magical power, and the magical power he awakened was a clone! Angel clone: "I want to believe in becoming a god!" Undead clone: "Wait, why the hell did I become a woman, and a white-haired loli?!

Dia, the Wavebringer, accidentally travels to the world of Hunter x Hunter. Upon awakening, he discovers he has acquired Dio's powerful Stand, the World, which can stop time. Will he use this power to explore the Hunter world, a world filled with unknowns and adventures, and make amends for the regrets between people...? Using Time Stop to steal a piece of Kito's chocolate cake? Dia retorts, "It's common sense that dogs can't eat chocolate, so why are you hitting me?" Using Time Stop to move Chrollo around the corner of the stairs, mimicking Dio's famous scene? Chrollo: "Interesting, are you saying I'm afraid of you?" Playing cards with Poxon, using a Stand to peek at her hand and then swindle her out of her savings? Poxon: "My life savings...my dreams, you've taken them all. Don't you have any intention of saying anything?" Dia grins. You want to hunt me down? Find me first! "Come out, my Mind Beast!" "Raise a [Giant Fog] 30 kilometers ahead!"

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.

[Invincible + Many Women + Brainless Fun]

Luo Xiu was lucky enough to travel through the world of pirates and received a gift from the mother of Blue Star. He possessed a supernatural understanding and unparalleled learning and creative abilities.

Join the Rocks Pirates and absorb the swordsmanship, physical skills, domineering and other abilities of monsters such as Whitebeard, Golden Lion, Big Mom, Kaido, John, Silver Axe, Rocks, etc. like a sponge. And draw inferences from one instance and create more powerful abilities and moves by associating with previous anime!

......

Luo Xiu has many names in his life.

Monster... Genius... Evildoer... Devil... The world's greatest swordsman... The world's worst criminal... The world's strongest man... And the king of the world!