Viruz

What should I complain about?

Kuro smiled wryly as he shook his head, brushing away the chaotic thoughts distracting him. He then resumed examining the remaining items.

[Special Item "Poison Nest" detected.

Effect: Possesses its own infinite vital space, designed as an ideal habitat for all types of poisons.

Has a strong attraction to highly toxic creatures.

Active Ability: Can generate a powerful suction effect to inhale highly toxic substances into itself.]

"Highly poisonous creatures and not venomous insects?" he murmured, his eyes widening slightly in surprise.

At first, he thought the "Poison Nest" was simply a venomous version of the "Insect Nest." However, it seemed much more sophisticated.

If the nests were not formed by the insects themselves but by the bodies housing them, everything made sense.

With this realization, he set the nest aside and turned his attention to the next item: a purple crystal the size of a thumb.

[Special Item "Poison Crystal" detected.

Effect: This crystal contains high antitoxic properties.

When consumed, the user's body becomes completely immune to any form of toxicity.]

Reading the description, he swallowed it without a word.

Although his body boasted impressive vitality thanks to his Sage Body, granting him monstrous chakra reserves and physical endurance, it didn't make him immune to aging, disease, or poisons.

In this world, aside from the Ten-Tails Jinchūriki, no one—not even the Sage of Six Paths—could escape aging, illness, or death.

After consuming the crystal, his body reacted immediately, just as it had with other crystals before.

The Poison Crystal disintegrated into countless tiny particles, barely visible under a microscope.

These antitoxic particles resembled small violet fireflies, flowing through his bloodstream and dispersing throughout his body.

His body's cellular structure began to change. The changes were incredibly subtle, almost imperceptible, and nowhere near as drastic as the effects of other crystals.

Perhaps five percent at most.

Even so, the result was significant. Having a body immune to poisons was an impressive advantage in this world, especially against enemies like Sunagakure's puppet masters.

The adaptation process took about five minutes. By the end, the antitoxic particles had fully integrated into his body.

Kuro stood up, moved his wrists, and examined his physique, but he noticed no apparent difference.

"It seems my resistance to poisons just increased..."

While he knew the system wouldn't test him, he wasn't willing to ingest poison just to confirm it. With that idea dismissed, he turned his attention to the final item: a test tube containing a purple liquid.

[Special Item "Nanovirus" detected.

Effect: This virus possesses extremely potent toxicity.

Once in contact, it infects biological cells, penetrating and destroying them.

Virus characteristics: Can only live inside biological cells.

Dies when the host cell becomes necrotic.

Infected cells emit a poisonous gas.

Note: If enough biological cells are infected, this virus could, theoretically, destroy the world.]

"..."

Kuro was silent, completely shocked.

Isn't this the Forbidden Technique Torune uses?

And it seems the "Nanovirus" is an enhanced version of that technique.

He held the tube as his thoughts raced. After contemplating for a moment, he decided to act.

He went to the backyard and threw the tube to the ground.

The glass shattered instantly, releasing a small crystalline purple liquid—the dangerous culprit capable of destroying the world.

Outside its system-forged container and without biological cells to infect, the virus quickly died.

The purple liquid began to evaporate, turning into a white gas that gradually disappeared completely.

"Sigh..."

Kuro let out a long sigh of relief.

The power of this thing was incredibly tempting but also too dangerous. Although he aspired to have power rivaling the greatest in this Universe, he knew a tool like this would only lead to disaster, not control.

Even if the "Nanovirus" were stored in the system's space, the possibility of something going wrong made him uneasy. Only by destroying it completely could he find peace.

As for Torune...

Although his venomous technique was lethal and effective, it wasn't comparable to the Nanovirus's catastrophic potential. In fact, his venom lacked the range to devastate an entire city, let alone the world.

Moreover, Torune deeply valued his family and comrades. It was unlikely he would use his technique as a last resort, except under extreme circumstances.

Of course, if he had been under Root's control, things might have been different.

...

After cleaning up the broken glass, Kuro returned to the dojo.

He sat in the center, frowning as he reflected.

Something felt odd.

It seemed the items forged from Shino and Torune's hairs weren't related to their insect control techniques but to the bodies hosting those insects.

Why weren't accessories directly linked to the secret technique forged?

He recalled how he had used Chōza's hair to forge a giant bracelet that allowed any body part to change size. This meant clan secret techniques could also produce accessories.

I miscalculated.

Kuro sighed deeply. He had assumed Shino had nothing special beyond his bond with insects, but he was wrong.

And Torune…

Although he had been able to forge multiple items with his hair, something seemed missing.

I'll need to seek more opportunities in the future.

In any case, with the two diapers, there was no need to rush into forging something related to insect control.

Having it was useful but not indispensable.

In a better mood, he went to the yard and approached Black. The dog, upon seeing him, immediately got excited and began licking him.

After freeing him from the chain, Black dashed off at full speed.

"If you go out and cause trouble, you'll be chained up for the rest of your life!" he warned.

In the distance, Black's barks seemed to respond as a crow flew toward him.

"Those two…"

Kuro smiled faintly.

Back at home, he started cooking. He prepared his meal, took a walk with Black, and allowed himself to enjoy a quiet evening.

This kind of life made him feel comfortable, almost obsessed.

However, he knew that if he wanted to maintain that peace forever, he would need enough power to protect it.

That's why he couldn't let himself slack off.

The night passed without incident.

The next day, Kuro went to school as usual.

To his surprise, Naruto, who had been absent yesterday, arrived early to the classroom. However, something was very wrong.

Naruto's nose and face were swollen, and his arms and neck were covered in scars that clearly came from a sharp weapon.

Someone attacked Naruto in Konoha?

Kuro's eyes widened in disbelief.

________

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