"The 'missile launcher' you wanted installed in the chest was extremely difficult to realize, so I borrowed from Sunagakure's puppet techniques and modified it into a senbon launcher.
The activation switch is placed on the front of his right paw.
As long as you regularly replace the senbon inside, it can fire continuously.
Aside from that, I also made special modifications to Garuru's limbs.
These metal claw-blades were custom-made for me by the owner of Mantendo.
According to my tests, when combined with Garuru's strength, these claws can easily smash an ordinary ninja blade.
But what I'm most satisfied with is that the armor does not harm Garuru's body in any way, and it is extremely easy to remove."
As Orochimaru explained, Garuru cooperated by moving each armored joint.
When Orochimaru spoke about the detachment mechanism, he pressed a hidden button under Garuru's neck.
With click-click-click metallic sounds, the armor pieces fell off one after another, landing heavily on the floor, leaving only the special claw-blades on his limbs.
Listening to Orochimaru's explanation, Hoshiyomi's eyes were practically sparkling.
Garuru's natural strength was already comparable to an average elite jōnin.
Now, equipped with this armor, he was practically a walking war machine.
Just one MetalGarurumon was already this overwhelming—
If he could someday assemble an entire MetalGarurumon squadron…
Just imagining it made Hoshiyomi drool.
During the Fourth Great Ninja War, while facing a hundred thousand White Zetsu, he could raise his hand and unleash a hundred MetalGarurumons launching wind bullets and jets of flame simultaneously.
The scene would be… absolutely glorious.
Seeing Hoshiyomi's fantasies practically written on his face, Orochimaru smiled and shook his head, pouring cold water on him:
"Hoshiyomi-kun, I advise you to give up on the idea of mass production.
This armor is powerful, yes—but only suitable for large-scale battles.
In individual combat, it can become a burden.
Most ninja beasts do not have Garuru's physical strength.
Ordinary ones would be unable to move at high speed while carrying this much metal.
Also, the cost of this armor is… excessive.
The resources required to build just this single set could supply a thousand-man ninja corps with tools for five years."
Only then did Hoshiyomi reluctantly abandon the dream of a MetalGarurumon army.
Still, the one in front of him was already enough to satisfy his armored-beast fantasies.
...
After demonstrating the assembly process, Orochimaru stored the armor into a sealing scroll and handed it to Hoshiyomi.
From now on, whenever he needed it, Hoshiyomi could simply summon the armor and equip Garuru himself.
After inspecting MetalGarurumon, it was time for the main task: Shin's Sharingan transplant surgery.
Shin had known about this plan for years.
Having spent most of his life assisting Orochimaru with research, he was mentally prepared and felt no resistance toward the procedure.
Hoshiyomi and Orochimaru moved to another laboratory.
After a short wait, Shin and Kabuto entered.
Thanks to Orochimaru's guidance—and Kabuto and Anko's company—Shin did not inherit the bizarre mindset he had in the original story, nor was his body covered with eyes.
He simply looked like a perfectly normal boy of eleven or twelve.
After greeting Hoshiyomi and Orochimaru, Shin obediently lay down on the operating table.
Kabuto greeted Hoshiyomi, then immediately began operating various instruments.
Orochimaru turned around and brought over the surgical tools, along with the prepared three-tomoe Sharingan and the Mangekyō Sharingan.
After thinking for a moment, Hoshiyomi entered Sage Mode and activated Sage Sensory ability, focusing it on Shin.
He needed to monitor Shin's condition at all times and infuse Yin Release chakra—ready to halt the experiment the moment something went wrong.
Orochimaru retrieved the prepared three-tomoe Sharingan from a culture dish.
Kabuto, quick and precise, removed Shin's original eyes and, with incredible speed, implanted the pair of three-tomoe Sharingan.
At the same time, he activated his Mystical Palm Technique to accelerate the fusion process.
With their seamless cooperation, Shin didn't even have time to feel any pain before his eyes had already been replaced.
After checking the instruments and seeing all values remain stable, Orochimaru turned to Hoshiyomi:
"Hoshiyomi-kun, you can begin infusing the Yin Release chakra."
Hoshiyomi nodded and stepped forward.
He looked at Shin and said:
"Next, I'll infuse Yin Release chakra into your body.
Pay close attention to any changes.
If you feel anything uncomfortable, say it immediately."
Shin smiled and nodded.
Seeing this, Hoshiyomi said no more and activated his chakra nature transformation, converting his chakra into pure Yin Release.
Placing both hands over Shin's new Sharingan, he began steadily pouring this pure Yin chakra into Shin's pupils.
Through his sensory perception, Hoshiyomi could clearly see that as his chakra entered, the pair of Sharingan—which did not originally belong to Shin—began reacting.
Just like he had once observed before, these Sharingan, which should have been incapable of further increasing in ocular power, suddenly released an unfamiliar kind of chakra from within, drawing in his Yin chakra relentlessly.
And Shin's ocular power was increasing at a rate visible to the naked eye.
Orochimaru glanced at Shin.
Lying on the operating table, Shin began giving a live report of his condition:
"I feel perfectly fine.
My eyes feel warm, like they're being wrapped in something soft.
I can clearly feel the three-tomoe Sharingan merging deeper with my optic nerves."
At that moment, one of the instruments beside Orochimaru suddenly beeped.
Orochimaru turned to check it, then saw it return to normal.
Shin quickly explained:
"My Hashirama cells just reacted.
Some unknown force was drawn out and began interacting with my ocular power.
It feels like it's accelerating the strengthening process."
Under everyone's careful observation, the experiment proceeded step by step without deviation.
Shin's Sharingan absorbed Hoshiyomi's Yin chakra like a starving ghost reborn, greedily devouring every drop.
Seeing this, Orochimaru couldn't help smiling—this confirmed his hypothesis:
the link between Hashirama cells and living optic nerves did accelerate ocular power restoration.
After about five minutes of continuous Yin chakra infusion—roughly one-fifth of Hoshiyomi's chakra reserves—Shin suddenly spoke:
"My eyes are feeling hot… almost uncomfortably so.
But my body keeps telling me these eyes still want more Yin Release chakra.
Lord Hoshiyomi… can you increase the output speed?"
...
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