Shindai stood frozen in place after hearing Obito's words, when suddenly an idea struck him.
Shindai currently looked black-eyed and swollen-faced, but with a ninja's recovery abilities, he'd probably be good as new in a moment.
So...would Kannazuki be able to heal itself when damaged?
No matter what material was used, no matter how tough it was, there would always be a limit to what it could withstand.
What if something were extremely hard? Could it even block a Tailed Beast Ball?
Of course, this was just a metaphor—there might not even exist any material capable of blocking a Tailed Beast Ball.
As a puppet, Kannazuki naturally couldn't regenerate like a human.
Even if it somehow could regenerate like humans do, it still wouldn't be useful, since human regeneration requires time.
What Shindai had in mind was instant restoration the very moment Kannazuki sustained damage.
When Shindai saw Obito step across a puddle and watched the ripples quickly settle back into stillness afterward,
Something in Shindai's mind clicked together like pieces of a puzzle finally fitting into place.
Seeing Shindai remain motionless at the spot, Obito asked puzzledly, "Huh? Shindai, why are you still standing there? Let's go."
Shindai exclaimed joyfully, "Ahahaha! I get it now! I understand! I know exactly what to do!"
Shindai immediately took off running toward his home.
Minato Namikaze, Kushina Uzumaki, and Obito exchanged confused looks. None of them could figure out what sudden impulse had caused Shindai to act this way.
Kakashi watched Shindai sprinting away and speculated, "Could it be...that Shindai got knocked silly by Kushina-sama?"
Kushina Uzumaki pursed her lips, "That shouldn't be right. Actually, I hit him pretty lightly—not even hard at all."
Kakashi, Obito, and Rin Nohara stared at Kushina with wide eyes.
That was still considered light, even though he ended up black-eyed and swollen-faced?!
Minato Namikaze worriedly suggested, "Let's go check on him. Don't want anything serious happening."
...
Rushing back home, Shindai eagerly took out a lump of [Iron Sand Body].
Using his Magnet Release Ninjutsu, Shindai manipulated this mass of iron sand.
Under Shindai's control, the iron sand shifted and morphed endlessly.
At that moment, Minato and others arrived at Shindai's house, seeing him manipulating the iron sand.
As Obito opened his mouth intending to speak, Shindai interrupted him, "Don't distract me! I must concentrate fully right now! My inspiration is overflowing! If I miss this chance, who knows when these ideas will come again!"
Obito closed his mouth and silently continued watching Shindai working with the iron sand.
They realized Shindai might be creating something important, so they dared not interrupt him, not even moving slightly.
An hour passed quickly.
Kakashi and others seemed frozen in place, completely motionless.
But their expressions grew increasingly strange.
Because for the entire hour, Shindai had been continuously manipulating the Iron Sand Body, changing its form as if he were toying with it.
Another two hours passed.
Obito's legs had gone numb from standing so long, and he was starting to sway. The wait was unbearably dull.
He didn't dare budge an inch—he was terrified of interrupting Shindai.
Just as Obito was about to quietly adjust his stance and take a small step back, Shindai suddenly shot up from his seat.
Shindai stared at the iron sand cube in his hand with wide eyes: "I finally did it! I knew this method would work!"
"Phew!"
Obito, Kakashi, and Rin Nohara all let out a sigh of relief when they heard Shindai had finally succeeded.
Actually, Kakashi and Rin were also on the verge of giving up from waiting.
Obito immediately stepped closer to examine the cube made of reshaped iron sand. Confused, he asked, "Wait… doesn't seem particularly special. Isn't reshaping iron sand something you can do anytime, Shindai? Was there really a need to spend three hours on this?"
Kakashi also walked over, looking at the iron sand cube while guessing, "Since Shindai took three hours, it definitely isn't just about changing shape. There must be something unique about it, right?"
Shindai snapped his fingers. "Exactly! Kakashi, smash this iron sand cube apart with all your strength."
Without hesitation, Kakashi instantly punched the cube, shattering it into pieces.
Yet in the very next moment, the scattered iron sand gathered again, reforming into the cube.
Rin Nohara tilted her head in confusion: "Still doesn't seem all that impressive… wasn't it just broken apart by Kakashi, and then you reassembled it, Shindai?"
Kushina Uzumaki rubbed her chin thoughtfully: "I think I'm onto something... but I can't quite explain it yet. Seems like there's something strange about the cube itself."
"Mm-hmm, Kushina-sama is somewhat correct. Did you notice anything, Minato-sama?"
Shindai was extremely proud. If even Namikaze Minato couldn't figure it out, then this would be an even greater success!
However, Minato Namikaze—the genius of geniuses—had already seen through it: "After Kakashi destroyed the cube, you didn't control the iron sand to reform it. Instead, it automatically reassembled itself into a cube, am I right?"
Although Minato had figured it out, Shindai wasn't disappointed at all—he remained incredibly excited.
Shindai nodded and explained, "That's exactly right. I didn't manipulate the iron sand at all—it spontaneously reconstructed itself into a cube.
Magnet Release allows non-magnetic objects to gain magnetism. So I layered different intensities of magnetism into these iron sands—from strongest to weakest—eventually assembling them into the same cube shape again.
When Kakashi destroyed the cube, the pieces with the strongest magnetism gathered first from the center, followed by the next layer, and so on, eventually assembling themselves into the same cube shape again."
Obito clicked his tongue. "Hmm... it doesn't seem that impressive."
Shindai frowned at him. "Don't speak if you don't understand! The stronger the magnetism, the harder this [Iron Sand Body cube] becomes—harder even than shinobi tools. Of course, no matter how strong a material is, it will break once its limit is exceeded.
The problem with puppets is, if part of one gets damaged, that part becomes unusable. If the entire puppet breaks, then it would no longer be able to fight.
But if I incorporate this [Iron Sand Body cube] concept into puppet-making..."
Kakashi immediately caught on. "Then even if this puppet is completely destroyed, it could reassemble itself using magnetism, right?"
Shindai's grin widened ear to ear. "Exactly! That means I'll have a puppet that cannot be destroyed. Plus, I can utilize magnetic properties for various functions—like rearranging the iron sand during battle to change its form, or applying positive and negative poles to suddenly launch iron sand as concealed projectiles.
I'm certain that once I complete this puppet, it will be unstoppable!"
Minato Namikaze and the others listened with increasing surprise. Judging from Shindai's explanation, the puppet he was about to create indeed sounded like a truly groundbreaking creation.
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