Although no longer the main character, former Seventh Hokage Uzumaki Naruto remains a figure millions of fans eagerly await after being sealed away. Recently, key details in Boruto: Two Blue Vortex have hinted at a shocking development. Naruto is set to make a comeback with a fully functional mechanical arm equipped with Otsutsuki’s exclusive Rinnegan ninjutsu.
Limits of the Seventh Hokage After Losing Kurama
Since chapter 55 of Boruto, the ninja world was shaken when Naruto officially lost Kurama after a deadly battle with Isshiki. Shortly after, in chapter 77, Kawaki sealed him away to another dimension using the Daikokuten technique.
Many fans feared that even if Naruto returned, he would be past his prime without Kurama, and his connection to other Tailed Beasts severed. Although in chapter 64 Naruto demonstrated his strong will by mastering an advanced Sage Mode, it still seemed insufficient against entities like Shinju or the new generation of Otsutsuki.
However, consider his close friend Uchiha Sasuke. In chapter 5 of Two Blue Vortex, despite losing his Rinnegan and once being powerless against Jigen, Sasuke trained alongside Boruto and broke his limits to disable one of Code’s eyes (Code being stronger than Jigen). For Naruto, the key to regaining his power was planted over nine years ago.
The Ultimate Weapon: A Mechanical Arm Fully Replicating Momoshiki’s Rinnegan
Back in chapter 16 of Boruto, Naruto tested a unique scientific ninja tool crafted by Professor Katasuke: a mechanical prosthetic hand based on data from his battle with Otsutsuki Momoshiki.
The mechanism was explained as follows: “Using it, you can absorb all of an opponent’s ninjutsu, but unfortunately, it cannot counterattack yet.”
This ability is actually Momoshiki’s signature Rinnegan ninjutsu: absorbing and releasing chakra. Momoshiki could drain any chakra from his palm to make it his own, then use his remaining Rinnegan eye to amplify his attacks many times over before countering. Three years ago, Naruto’s mechanical arm was only a prototype limited to absorption.
Now, with years having passed and the genius technologist Amado present in the Hidden Leaf Village, this prototype is likely perfected. Upon his return, Naruto will officially wield it, ready to absorb and reflect any devastating attack from his enemies.
A Perfect Fusion of Technology and Hashirama’s Cells
Naruto’s return is accelerating as the story unfolds with intense events around the two Shinju, Hidari and Jura. According to the plot, Boruto and Sarada defeating Hidari’s clone will be key to rescuing and bringing Sasuke back. Immediately after, the seal imprisoning Naruto will surely be broken.
When he returns, the Seventh Hokage’s power will go beyond the mechanical Rinnegan ninjutsu to reach an even more formidable level. It’s important to remember that Naruto’s right arm, since the Fourth Great Ninja War, was forged from Hashirama’s cells (as Sakura explained in chapter 699).
If Amado and Katasuke successfully integrate Momoshiki’s chakra absorption technology into the biological structure containing the First Hokage’s cells, Naruto will gain a massive chakra boost along with super regeneration. He might even awaken the Wood Release kekkei genkai.
Imagine an Uzumaki Naruto who not only masters an enhanced Sage Mode but can also use Wood Release to bind enemies, while wielding a “bottomless” arm that absorbs and reflects all ninjutsu. This would be a game-changing combination, restoring Naruto to the ranks of the world’s strongest warriors without relying on Tailed Beast power.