After gaining a preliminary understanding of the extraordinary effects of the Shadow Shuriken Technique, what ninjutsu did Fierce plan to teach Koshino?
It wasn't just any ordinary ninjutsu; it was an A-rank jutsu!
According to Koshino's understanding, as detailed in the "Book of Formation" from the Naruto series, E-rank jutsu are academy-level, D-rank jutsu is for genin, C-rank jutsu is for chunin, and once a jutsu reaches B-rank, it's of jonin level.
Looking higher, A-rank jutsu can be classified as a forbidden technique, and S-rank jutsu is considered the ultimate secret!
Shortly after meeting Koshino, Fierce, recognizing his potential with the Shadow Shuriken Technique, decided to teach his an A-rank jutsu through mental communication without any hesitation in front of Shisui Uchiha and Kakashi. Such generosity and trust left not only Koshino but even Kakashi looking at Fierce with newfound respect.
Only Shisui remained unfazed, as if he already knew Fierce well. While Koshino and Kakashi stared at Fierce in astonishment, Shisui simply smiled faintly.
However, what shocked Koshino the most wasn't that Fierce taught his an A-rank jutsu.
What truly stunned Koshino was the name of the jutsu Fierce taught him, leading his to speculate about Fierce's true identity!
"Shuriken Shadow Clone Jutsu?"
"Fierce taught me the Shuriken Shadow Clone Jutsu?"
"Isn't this A-rank jutsu developed by the Third Hokage himself?"
"Not only does Fierce know the Shuriken Shadow Clone Jutsu, but he also has the authority to teach it to others?"
"Could it be that Fierce is from the Sarutobi clan? And perhaps... could he be someone highly regarded by the Third Hokage?"
"Could Fierce possibly be Asuma Sarutobi's older brother? The father of Konohamaru from the original storyline?"
As soon as Fierce finished teaching the jutsu, and Koshino saw the Shuriken Shadow Clone Jutsu appear in his app's training progress bar, his eyes narrowed slightly. he then glanced at Kakashi with an intensely shocked expression, and Kakashi silently nodded in response!
What did Kakashi's nod mean?
It meant that Koshino's guess was at least 80% accurate!
The mysterious ANBU member in the Sharp Blade Squad, Fierce, was likely the eldest son of the Third Hokage!
A person who, in the ninja world, was also known as a genius, a name that echoed for a time but tragically died young.
Many people might have known about Fierce's identity through fanfiction stories, where he is often described as a member of the "Konoha Eight Colors," and his name is given as Shinnosuke Sarutobi, inheriting the Third Hokage's terrifying mastery of Earth Release jutsu, making him a true Earth Release expert whose techniques could split mountains and terrify enemy ninjas.
But that was all fiction!
In the real history of the ninja world, Konoha Village never had a group known as the "Konoha Eight Colors," and even the name Shinnosuke Sarutobi was likely a fabrication by fans. However, as the eldest son of the Third Hokage, his reputation and status far exceeded that of Asuma Sarutobi in the original storyline. Fierce's strength might not be as exaggerated as the "Konoha Eight Colors" legends, but he surely had the potential and skill to gain recognition for the Third Hokage and many other ninjas in Konoha.
Furthermore, from Koshino's interactions with Fierce, he had subtly sensed that Fierce's power might even surpass that of Shisui Uchiha.
So, when Koshino realized Fierce's hidden identity and the Sarutobi name he bore, he couldn't help but marvel at the fact that his Sharp Blade Squad indeed had an elite lineup!
Setting aside Shisui Uchiha and Sharingan Kakashi, who were both destined to become legendary figures in their own right, Koshino herself, with the help of his app and diligent training, had the potential to stand atop the ninja world!
And then there was Fierce, whose strength alone could rival the Seven Ninja Swordsmen of the Mist!
If the Sharp Blade Squad wasn't already considered an elite team, then what kind of Konoha ANBU squad could truly be called an elite lineup?
With these thoughts in mind, Koshino silently kept the knowledge of Fierce's Sarutobi lineage to herself. he took a deep breath and quickly used the app's accelerated training effect to master the Shuriken Shadow Clone Jutsu.
Of course, having already mastered the A-rank Multiple Shadow Clone Jutsu and with his strong chakra control abilities, Koshino had no difficulty mastering the similarly A-rank Shuriken Shadow Clone Jutsu quickly, despite the slow speed of forming hand seals. However using the app's accelerated training effect made the process even smoother and saved time.
For all these reasons, Koshino chose to use the app's acceleration feature to train the A-rank jutsu that Fierce had taught him.
Just as Fierce predicted, after mastering the Shuriken Shadow Clone Jutsu, the effectiveness of Koshino's Shadow Shuriken Technique multiplied several times over. In subsequent encounters with Mist Village ninjas, Koshino didn't even need to engage directly. By simply using the enhanced Shadow Shuriken Technique with the Shuriken Shadow Clone Jutsu and combining it with the Shadow Communication Technique, he was able to effortlessly assist Shisui, Kakashi, and Fierce in neutralizing Mist Village ANBU squads!
In just three days—
It took only three days for the Sharp Blade Squad to fully demonstrate the edge of their blade before the Mist Village squads!
With Koshino's support in the rear, Fierce's timely interventions, and the lightning-fast killing speed of Shisui Uchiha and Kakashi, the Sharp Blade Squad's prowess was unstoppable!
In just three days, the Sharp Blade Squad's blade pierced into the hearts of countless Mist Village ninjas, claiming the lives of over twenty jonin, forty chunin, and an uncountable number of genin from the Mist Village!
Undoubtedly, the number of Mist ninjas eliminated by the Sharp Blade Squad was almost equivalent to the total size of a Mist Village ninja platoon!
Moreover, during all these battles, no member of the Sharp Blade Squad was ever injured!
Such a terrifying battle record naturally elevated the Sharp Blade Squad's reputation.
Upon hearing of the Sharp Blade Squad's performance, even the Fourth Hokage intensified the frontline engagements against the Mist Village, allowing Konoha Village to take full control of the war against the Mist.
The Fourth Hokage's strategy to end the war with the Mist Village before the year's end was off to a perfect start!
However, the smoother the operations went, the more troubled Koshino felt.
Especially now, as Koshino was about to annihilate a squad of six Mist jonin with the help of the Shadow Communication Technique and the Nara Clan's shadow techniques, a strange and unsettling thought crept into his mind!
Could it be that the Sharp Blade Squad's success was all part of Madara's grand plan?