Scientific Ninja Tools (SNTs) are one of Boruto: Naruto Next Generations’ strongest worldbuilding concepts because they push the franchise into a true shinobi-tech era. For the unversed, Scientific Ninja Tools are advanced technologies designed to replicate, enhance, store, or even weaponize ninja abilities, while the most dangerous ones directly alter the human body through cybernetic implants and Shinobi-Ware modifications.

We are ranking the SNTs by battlefield lethality, versatility, reliability, and how completely each tool bends the flow of combat. In other words, the higher the placement, the more the tool feels like a cheat code with consequences. 

TitleBoruto: Naruto Next GenerationsCreatorMasashi KishimotoProduction StudioStudio PierrotRelease DateApril 5, 2017IMDb Rating (as of May 27, 2026)6.3/10StreamingCrunchyroll, Netflix, Hulu

10. Fire Gatling Turns Battles Into Endless Barrages Of Destruction

Ao from Boruto: Naruto Next Generations. [Credit: Studio Pierrot]

First Appearance: Episode 184, “Puppets”

Developed By: Amado Sanzu

Known Wielder: Ao

This weapon treats Fire Release ninjutsu like mechanized ammunition, converting elemental chakra into an unrelenting rain of rapid-fire bullets. Fire Gatling turns the battlefield into a spray of rapid Fire Release shots and forces the opponent to survive a storm. That makes it dangerous, but also narrow in purpose. Once the trick is understood, it loses some of its aura, which is why it lands here instead of much higher.

9. Dark Cloud Releases A Deadly Virus That Melts Entire Armies

Boro from Boruto: Naruto Next Generations. [Credit: Studio Pierrot]

First Appearance: Episode 199, “Overload”

Developed By: Amado Sanzu and Boro

Known Wielder: Boro

The Dark Cloud disperses a mist of microscopic pathogens that bypass traditional sensory jutsu and melt the victim’s physical matter. It’s a weaponized plague that eats away at opponents and ruins the idea of clean close combat. However, it requires specific delivery methods, can be blown away by strong Wind Release jutsu, and relies on the user already possessing an internal immunity to avoid self-inflicted disaster.

8. Shinobi Gauntlet Fires Multiple Ninjutsu Without Hand Signs

First Appearance: Episode 47, “The Figure I Want To Be”

Developed By: Katasuke Tono

Known Wielders: Boruto, Kawaki, Konohamaru, Garo, Ao, Victor, and Katasuke

The Shinobi Gauntlet (Kote) is one of the smartest scientific tools in the series because it weaponizes convenience. Instead of asking the user to be a perfect jutsu machine, it lets stored techniques come out fast and brutally. It sits at number eight because once the pre-loaded cartridges run dry, the gauntlet becomes a useless piece of forearm metal, making it far too reliant on external supply chains during extended warfare.

7. Autonomous Puppets Overwhelm Targets With Unstoppable Assaults

Kara Puppets from Boruto: Naruto Next Generations. [Credit: Studio Pierrot]

First Appearance: Episode 184, “Puppets”

Developed By: Amado Sanzu

Known Wielders: Kara and the Hidden Cloud Village

Autonomous Puppets are terrifying because they remove one of the biggest weaknesses in puppet warfare: the puppeteer. These machines act on their own, attack relentlessly, and can be outfitted with scroll-based jutsu to make them even uglier in battle. That autonomy makes them feel like a swarm with a mind of its own, which is exactly why they are so oppressive on-screen. The downside is that they are still a specialized weapon, not a universal answer.

6. Chakra-Nullifying Handcuffs Neutralize Threatening Ninja Without Effort

[Cedit: Shueisha] [Cedit: Shueisha] [Cedit: Shueisha]

First Appearance: Boruto: Two Blue Vortex Manga Chapter 14, “Duty”

Developed By: Amado Sanzu

Known Wielder Categories: Hidden Leaf Interrogation Force (Ibiki Morino) and Konoha Konpeito Guard

It functions by forcibly suppressing the target’s chakra network upon closure, dropping even god-tier shinobi down to fragile, “normal” human baseline physical durabilities. The handcuffs turn executioners and interrogators like Ibiki into absolute hazards. A simple physical strike can make an Otsutsuki-level captive bleed out since they cannot mold protective chakra. It sits lower because it demands absolute physical subdual or compliance beforehand to be locked into place.

5. Jutsu Absorption Arm Completely Erases Incoming Chakra Attacks

Ao from Boruto: Naruto Next Generations. [Credit: Studio Pierrot]

First Appearance: Episode 184, “Puppets”

Developed By: Katasuke Tono

Known Wielders: Katasuke, Boruto, and Ao

This is where the list starts getting mean. The Jutsu Absorption Arm is lethal because it attacks the logic of ninjutsu itself. A weapon that can absorb techniques changes how both sides have to think, and that alone makes it elite. It is already operating on monster level. Still, it’s limited by how it absorbs what it can actively intercept with its palm, leaving the user vulnerable to physical attacks or flank maneuvers.

4. Mirror Drones Trap Opponents Inside A Maze Of Fake Targets

[Credit: Shueisha]

First Appearance: Episode 186, “How You Use It”

Developed By: Amado Sanzu

Known Wielder: Ao

Mirror Drones are one of the nastiest tactical tools in Boruto because they let Ao attack from above while staying annoyingly difficult to pin down. The drones do not just harass the opponent; they reshape the battlefield into a space where Ao controls angles, timing, and distance. It’s ranked above Absorption Arm because they add mobility, surveillance, and offense at once. They are not just a defense against jutsu. They are a whole combat system.

3. Boruto Upgrades Sasuke’s Kusanagi Sword With Advanced Tech

The manga panel shows Boruto asking Sumire to upgrade Sasuke’s sword in Boruto: Two Blue Vortex. [Credit: Shueisha]

First Appearance: Boruto: Two Blue Vortex – Chapter 27, “Uchiha Style”

Developed By: Amado Sanzu and Sumire Kakei

Known Wielder: Boruto

This weapon is an advanced cybernetic overhaul of Sasuke’s iconic sword. Enhanced with a classified “special material” by Sumire Kakei, the blade is security-coded to Boruto, Sasuke, and Sumire through registered chakra signatures. It perfectly synergizes with elite chakra-channeling, allowing Boruto to seamlessly coat it with his master’s Uchiha Style: Flowing Blade jutsu. Combined with Boruto’s mastery of high-speed space-time techniques, the sword represents one of the deadliest melee weapons in Boruto: Two Blue Vortex.

2. Microscopic Ninja Tools Destroy Targets From Inside The Body

Kawaki from Boruto Naruto Next Generations.[Credit: Studio Pierrot]

First Appearance: Episode 188, “Awakening”

Developed By: Amado Sanzu

Known Wielders: Code, Kawaki, and Delta

Microscopic Scientific Ninja Tools are terrifying because they do not feel like equipment anymore. They feel like a rewrite of the body. Code, Kawaki, and Delta can weaponize their limbs into blades, claws, shields, and other combat forms, which makes the tool less like gear and more like a permanent upgrade to the user’s threat level. It’s No. 2 because it is flexible, brutal, and always “on.” That is the definition of elite combat tech.

1.  The Absorbing Eye Drains Ninjutsu And Fires Deadly Energy Beams

Delta from Boruto Naruto Next Generations.[Credit: Studio Pierrot]

First Appearance: Episode 179, “Victor’s Scheme”

Developed By: Amado Sanzu

Known Wielder: Delta

Sitting unchallenged at number one is Delta’s Absorbing Eye. This cybernetic masterpiece doesn’t just absorb incoming ninjutsu from any forward angle; it stores that energy and converts it into highly destructive, concentrated eye-beams. What makes this tool truly terrifying is that these beams carry a specialized frequency that completely nullifies physical or cellular regeneration. If you are hit by this weapon, your cells cannot repair themselves.

So, did Boruto kill the “ninja” in the Naruto world? Well, that’s for you to ponder and wonder about. For now, we understand why the top ranks here are so oppressive. Because they do not merely add damage, they rewrite the rules of the battle itself.

Do you agree with our ranking? Drop your ranking in the comments below!

Boruto: Naruto Next Generations is streaming on Crunchyroll, Hulu (the U.S.), and Netflix globally.
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