Wind Blade!
It was still that same Wind Blade!
When Koshino finally broke free from the "shackles of survival," the true potential released from within his was his extraordinary spiritual energy!
From the moment Koshino had transmigrated, his spiritual energy had far surpassed that of an ordinary person, a benefit shared by many transmigrators.
Later, after enduring the pressure of two life-and-death battles, Koshino twice broke through his limits, enhancing his spiritual energy to an even more terrifying level. This should have consumed his spiritual energy reserves, forcibly increasing his power.
But let's not forget the secret technique recently passed down to Koshino by the Fourth Hokage!
That was the Spiritual Secret Technique of the Uzumaki Clan!
After training in this spiritual technique for so long, Koshino's spiritual energy was on the verge of a qualitative transformation. Although he hadn't reached that point yet, the development of his self-created secret technique, the Shadow Communication Technique, was a clear sign that his spiritual energy was approaching a critical threshold!
At this moment, facing the threats from Kisame Hoshigaki, Juzo Biwa, and the rest of the Seven Ninja Swordsmen of the Mist, with the entire Sharp Blade Squad on the brink of annihilation, Koshino's spiritual energy had suddenly reached the edge of this qualitative transformation—just half a step away from fully transforming!
This half-step transformation deepened Koshino's understanding of Wind Release chakra, allowing his to break through the long-standing barrier that had held back his progress in the second stage of wind nature transformation!
Thus, under the cover of the Bloody Mist Technique, Koshino could "see" Kisame's massive figure!
This was the terrifying sensory ability granted by his further mastery of Wind Release chakra!
As for the "Wind Blade" technique that Koshino is using now, it is a secret technique he developed after gaining initial insight into the second stage of wind nature transformation. In some aspects, it even surpassed the Fourth Hokage's A-rank Rasengan and Kakashi Hatake's S-rank Chidori!
By using an ordinary kunai as a medium, he completed the second-stage nature transformation and form manipulation of Wind Release chakra!
In Koshino's hands, an ordinary kunai had turned into a deadly weapon!
So, when Koshino used the Wind Body Flicker to appear instantly behind Kisame, the new secret technique he had developed showcased its full power during its second use!
First, there was the swish of the kunai slashing down!
Then, another swish as the kunai in Koshino's hand left a deep, bone-exposing gash on Kisame's back!
A blood-curdling scream echoed through the cave from Kisame.
At that moment, even Shisui Uchiha, the captain of the Sharp Blade Squad, Juzo Biwa, and the other Mist jonin stationed outside the cave were stunned by Kisame's agonized scream!
Clearly, no one had expected that after Kisame entered the cave, Koshino would be the one to turn the tide, preventing the complete collapse of the Sharp Blade Squad!
But could Kisame, as a member of the Seven Ninja Swordsmen of the Mist, really be killed so easily?
Impossible!
Upon hearing Kisame's scream, Juzo Biwa merely smirked coldly.
"An interesting Sharp Blade Squad! An interesting little Leaf brat!"
"To have injured Kisame—he must be furious now, right?"
"All of you listen up! No matter what happens next, do not interfere with Kisame handling Konoha's Sharp Blade Squad."
"When Kisame gets truly angry, he doesn't distinguish between friend and foe!"
"Yes, Captain!"
Hearing Juzo Biwa's orders, the other Mist jonin couldn't help but feel a chill run down their spines!
This was clearly due to Kisame's fearsome reputation!
And just as Juzo Biwa had predicted, Koshino's Wind Blade had indeed injured Kisame. The gaping wound on his back would have been enough to incapacitate a normal shinobi, even a jonin like Kakashi or Fierce.
But not Kisame!
Feeling the pain in his back, Kisame let out a howl before a twisted smile crept across his face.
Especially when he gripped the hilt of the Samehada, the sword's handle began to undergo a strange transformation, causing Kisame's twisted smile to widen further!
"It's been a long time since I felt pain like this!"
"Brat, I have to thank you for letting me savor the taste of pain!"
"So, as a return gift, I'll make sure you experience a pain a thousand times worse!"
"Samehada: Chakra Transmission!"
Buzz!
Buzz!
As Kisame's voice fell, Koshino's heart skipped a beat. he noticed an unusual change in Kisame's Samehada, and his eyes filled with alarm!
Through his heightened Wind Sensing ability, Koshino saw that something like a rope was slowly emerging from the hilt of the Samehada, wrapping around Kisame's hand.
Even without Wind Sensing, Koshino could feel the intense chakra flowing through the rope into Kisame's body—a clear sign that the Samehada was transferring absorbed chakra into Kisame. As the Samehada transmitted chakra to Kisame, the wounds on his back and face began to heal at a frightening speed.
In less than a second, Kisame used the Samehada's special ability to recover from his grievous wounds.
In the next moment, his ferocious gaze fixed on Koshino. Gripping the Samehada tightly, Kisame was ready to launch a second wave of attacks.
But just as Kisame was about to take a step forward, he suddenly let out a soft "Huh!" in surprise!
As he prepared to attack Koshino again, Kisame realized that his feet couldn't move!
It turned out that while Kisame was using the Samehada to heal, Koshino, familiar with the original storyline, had predicted Kisame's actions based on the patterns of the future Kisame Hoshigaki. So, during the brief moment Kisame was healing, Koshino, who had previously used the Shadow Clone Technique, controlled a shadow clone to rush under Kisame's feet!
Taking advantage of Kisame's distraction while healing, Koshino had his shadow clone use the Shadow Imitation Technique to bind Kisame!
As Kisame finally realized Koshino's plan, a cold smile appeared on his lips, and he prepared to use the Samehada's protective ability to dispel Koshino's Shadow Imitation Technique. But suddenly, a brilliant light flashed in Koshino's left hand!
Without giving Kisame any chance to evade, Koshino revealed the first S-rank ultimate technique he had mastered!
"Kisame Hoshigaki, let's see how you plan to heal yourself with the Samehada now!"
"S-rank Ultimate Technique!"
"Wind Release: Rasenshuriken!"