If a single person had launched a combination ninjutsu attack, Sarutobi Hiruzen wouldn't have been all that surprised. The shocking part was that this Wind-Fire combo had been jointly unleashed by Uchiha Kaien and Namikaze Minato.
Most shinobi can't perform combination ninjutsu due to incompatible chakra natures—or simply lacking the right chakra types altogether.
Take water and fire, for instance. Even Sarutobi Hiruzen, a renowned ninjutsu master, couldn't merge those two clashing elements into a seamless jutsu.
For a shinobi who possesses only fire and water chakra natures, learning combination ninjutsu would require them to train and master a third chakra type—something extremely difficult and rare.
Anyone who manages to wield two chakra nature transformations is already qualified to be considered a jōnin. That alone speaks volumes about how rare and valuable combination ninjutsu truly is.
Sarutobi Hiruzen was born with all five chakra natures. It was thanks to this innate talent that he had enough time and potential to study countless ninjutsu and master the fusion of various elemental styles.
But now, standing before him were two eight-year-old children who could already coordinate with such flawless precision. That's what truly amazed him.
In reality, synchronizing like this was incredibly difficult. Even a slight imbalance in the chakra output could cause the jutsu to fail or worse—have the two cancel each other out and become a liability.
...
The battle raged on.
Uchiha Kagami remained calm in the face of the roaring Fire-Wind maelstrom. He simply raised one hand and formed a seal.
He'd already endured relentless combination jutsu attacks during his fight with that black-threaded monster. At this point, he was used to it.
A wall of water surged up in front of him, completely shielding him from the oncoming storm.
Whoosh!
A sharp whistle sliced through the air behind him. Kagami tilted his head back just in time to see eight shuriken streaking toward him. Uchiha Kaien had already repositioned himself more than ten meters away and launched a surprise attack!
At the same time, Namikaze Minato was weaving seals again—this time for a Lightning Release jutsu.
Using the natural conductivity of water to guide the lightning, Minato aimed to force Kagami into using Wind Release to counter. Meanwhile, he kept his attention locked on Kaien's next move, ready to support him.
"Water Formation Pillar – Modified."
Kagami remained composed.
He shifted the Water Formation Pillar behind him and began forming a new seal set.
"Wind Style: Great Breakthrough!"
Wind counters lightning.
Everything was moving in the direction Minato had hoped for.
A violent blast of wind ripped through the lingering Lightning Release and surged forward, forcing Minato to use Body Flicker to retreat just in time.
Meanwhile, Kaien was already prepared. His Sharingan gleamed—two tomoe in each eye, brilliant and focused.
"Genjutsu!"
Empowered by the double tomoe, the genjutsu caught Kagami completely off guard.
In the moment Kagami turned and looked through the curtain of water, his gaze met Kaien's—eye to eye. The illusion took hold instantly.
But Kaien didn't let his guard down.
Ever since acquiring the trait [Alluring Gaze], he had discovered a subtle trick hidden within it: even if his opponent wasn't actively using dojutsu, Kaien could still perceive the darkness beneath the surface—what they tried to hide.
Besides Uchiha Madara, the other person he studied closely was Uchiha Kagami.
Madara's ocular power was terrifyingly deep. Every time Kaien looked into his eyes, it felt like staring into the abyss. That unmeasurable depth had taught Kaien one clear truth:
Even if Madara was old, he was still Uchiha Madara—still the strongest shinobi in the world.
Then there was Uchiha Kagami. His chakra was nowhere near as dark as Madara's, but still far beyond what a standard three-tomoe Sharingan could reach.
Kaien was sure of one thing:
Uchiha Kagami had fully awakened the Mangekyō Sharingan.
That was the clearest impression Kaien got from sensing Kagami's dojutsu.
So, he had no illusion that a mere two-tomoe genjutsu could restrain him.
This was just to buy time.
...
"Oh? So you've already awakened two tomoe? Impressive, Kaien. You've got real talent."
As expected, Kagami's body only paused for a split second. The moment his three-tomoe Sharingan activated, Kaien's illusion shattered like glass.
Kagami stood calmly, almost fondly, waiting for their next move.
"Water Style: Water Dragon Bullet!"
The familiar jutsu roared to life. Kaien had now managed to compress the seals for Water Dragon Bullet down to just six, drastically speeding up the casting time.
Now that he'd simplified the sequence, it had become one of his go-to techniques.
He didn't have any forbidden jutsu at his disposal, so when it came to collaborating with Minato on a combination ninjutsu, Water Dragon Bullet was his best option.
Minato's chakra natures were lightning, fire, and wind. Kaien had wind, lightning, fire, and water—plenty of overlap. But the simplest pairing was still lightning and water.
"Lightning Style!"
Using Body Flicker, Minato had already moved closer. The two of them coordinated perfectly, balancing their chakra output as precisely as possible.
The massive water dragon took shape first, spanning more than ten meters. Thanks to the water flow leftover from Kagami's earlier Water Formation Pillar, they saved a significant amount of chakra.
As the water dragon surged forward, Minato timed it perfectly—attaching lightning to the dragon right as Kaien sent it flying.
Rather than dissipating, the lightning fused seamlessly with the dragon's body, forming a crackling armor of pure energy.
Electric arcs danced across the surface as the Thunder Prison technique wrapped around the water dragon, intensifying its pressure and ferocity.
"Water Style: Lightning Water Dragon Bullet!"
Kaien's roar brought Kagami back to the moment. He quickly formed seals of his own.
This level of jutsu… it was already on par with the techniques used by that black-threaded monster during their fight!
Astonishing. These two children had pushed their teamwork to such an incredible level.
"Fire Style: Dragon Flame Singing Technique!"
"Wind Style: Great Breakthrough!"
Kagami summoned several fiery dragon heads and clashed head-on with the oncoming attack, unleashing a combination jutsu of his own.
Just like Kaien and Minato's opening salvo—fire and wind, lightning and water—their jutsu collided in a dazzling explosion of elemental energy.
The clash of four different chakra natures filled the area with thick smoke.
Kagami's three-tomoe Sharingan spun rapidly, locking onto Kaien and Minato's positions through the haze. He intended to finish this in one move.
"Summoning Jutsu: Lightning Flash Blade Creation!"
----------------
Pls Drop some Power Stones
+100 chapters and support me on Patreon(.)com/Jixo