Lee Isn't Enough, We Need Kai Huang!
The moment Naruto became a perfect lifeform, he realized the limit of his lifespan.
It turned out that even becoming a Demon King, a perfect lifeform, did not truly mean immortality.
For example, Kibutsuji Muzan in the original work was hit by a medicine made by Tamayo during the Infinity Castle decisive battle.
That medicine, which turns demons into humans, was a compound medicine, and once broken down, it would become a medicine that could accelerate aging; one minute could age Muzan by fifty years, and even after accounting for the time the medicine took to take effect, Muzan had aged at least nine thousand years.
In addition, the compound medicine also had the effects of "preventing division" and "cell destruction."
In other words, the reason Kibutsuji Muzan appeared old was because his cells could no longer divide and metabolize, replacing old cells with new ones.
"Kibutsuji Muzan's lifespan limit should be around twelve thousand years; to extend it, he had to eat humans."
"My lifespan limit is thirty thousand years; to extend my lifespan, I don't need to eat humans, I just need to absorb natural energy from the world and convert it into new vitality."
"In a way, it's still immortality."
However...
After becoming the truly perfect creature that Kibutsuji Muzan spoke of, aside from Blood Demon Art, being immune to sunlight, and immune to decapitation, Naruto lost the ability to turn humans into demons like Kibutsuji Muzan because the "Bloodline Curse" was removed.
After all, Naruto's blood was perfect and no longer possessed the power of the curse.
"My current state should be somewhat like a Sage Body."
"Let's check the attribute growth."
Naruto's thought stirred, and he opened his attribute panel:
[Uzumaki Naruto]
[Race: Human]
[Level: LV44]
[Profession: Shadow Monarch]
[Strength: 300]
[Agility: 150]
[Constitution: 800]
[Spirit: 150]
It didn't grow as much as expected.
The vastness of life energy was not reflected in the [Constitution] value; Naruto had known this for a long time, otherwise, with the Whirlpool Clan's vitality, his starting Constitution wouldn't have been a single digit.
The meaning of a perfect lifeform was not the improvement of basic attributes, but rather the bestowal of immortality, like a Turritopsis dohrnii.
Are the basic attributes of a Turritopsis dohrnii high?
The answer is obvious.
"Let's see it with the Demon Slayer Mark state superimposed."
A flame pattern slowly appeared on a corner of Naruto's forehead.
[Strength: 300 → 1500]
[Agility: 150 → 750]
[Constitution: 800 → 4000]
[Spirit: 150 → 300]
Perhaps because his cells became stronger, the three basic attributes of [Strength], [Agility], and [Constitution] actually achieved a fivefold increase, while the [Spirit] attribute remained a twofold increase.
Even so, with [Strength] exceeding a thousand and [Constitution] exceeding four thousand, such growth still made Naruto overjoyed.
If he were a pure Taijutsu Ninja, with just these four-dimensional attributes, he would probably be at the peak of Kage level.
4000 points of Constitution meant that Naruto was not a glass cannon!
"I look forward to a head-on clash with Lee, who opens the Fifth Gate."
"No—Lee with five gates isn't enough, we need 'Seven Gates Kai'!"
Naruto's heart was burning, his blood boiling.
He wished he could have a close-quarters battle with Kai Huang.
"If the Demon Slayer Mark is superimposed with Eight Inner Gates, it seems I'm going further and further down the path of a stat monster." Naruto said with a bit of emotion.
No mechanics, no fancy tricks, just the ultimate in stats.
But in fact, in terms of mechanics, Naruto also had them.
As the Shadow Monarch, controlling all shadows in the world was his mechanic!
For defense, he had Great Black Heaven and Absolute Cube.
For offense, he had Planetary Spiraling Shuriken.
Naruto was now strong in all aspects!
Just then, the morning light pierced through the night, and the first ray of sunlight, like molten gold, poured onto Naruto through the broken clouds.
Yushiro subconsciously shouted, "Danger!"
Tamayo, however, stopped him, her eyes calm with the insight of truth: "Yushiro, don't panic, look."
Golden light flowed over Naruto's newborn body.
There was no scorching, no turning to ash.
The light particles were like docile spirits, joyfully integrating into his hair and skin, coating him with a sacred halo.
"He—he really isn't afraid of sunlight anymore." Yushiro cried out in surprise.
Tamayo watched Naruto bathed in sunlight, standing in the shade of a tree, tears streaming from her eyes.
Naruto collected his myriad thoughts, walked in front of Tamayo, took out a blue spider lily from his item bar, and said with a smile, "Keep these blue spider lilies; I believe they can also make you unafraid of the sun, allowing you to walk in the sunlight again."
Of course.
The perfect creature medicine (or perfect creature) was unique.
It could not be replicated!
If Tamayo were to research the medicine again, what she would create would no longer be a perfect creature medicine, but a human-transformation medicine.
"Lord Naruto... Thank you."
Tamayo took a deep breath, her expression solemn, and took the blue spider lilies with both hands.
Compared to being an immortal demon, Tamayo actually preferred to be an ordinary person.
"You're welcome, the medicine you developed was of great help to me." Naruto nodded and said.
A red-quality medicine!
It was comparable to a divine artifact!
Naruto obtained it almost without paying any price.
Of course, this was a miracle of the entire Demon Slayer World; after it was "dropped," no second red-quality item or equipment would be born.
"I still have things to do, so I'll be leaving first."
After bidding farewell to Tamayo, Naruto returned to the Fire Shadow World, then took out the Underground City key to open the Goblin Slayer World.
"Before, I was worried about players in the Goblin Slayer World targeting me for 'dimensional' attacks."
"I can deal with Planet Godzilla, but if they brought in Son Goku from Dragon Ball, that would be awkward."
"But now, I am immortal and indestructible, so I'm not afraid of those."
Naruto took out a few drops of blood and gave them to several Shadow Clones for safekeeping, which was equivalent to an extra layer of insurance.
Naruto's cells existed in the blood.
Once the main body died, the survival will of Naruto's cells would automatically trigger, and then a random drop of blood would regenerate the main body, which was the so-called rebirth from a drop of blood.
Moreover.
Naruto could send the Shadow Clones to the Demon Slayer World.
This way, no matter how strong his enemies were, they couldn't pursue him across several worlds.
After setting up the "insurance," Naruto opened the entrance to the Goblin Slayer World.
Returning to the Underground City.
The landing point was indeed the captain's cabin of the Ghost Ship.
At this time, the Ghost Ship was still following Naruto's orders, constantly "roaming" randomly in the Goblin Slayer World, and had already cleared all the fog from the navigation map.
Naruto walked out of the cabin, illuminated by dim kerosene lamps, and found that the Goblin Slayer World was in the middle of the night.
A pitch-black Ghost Ship, perfectly integrated into the night, sailed at high speed under the bright moon and above the sea of clouds.
"This Ghost Ship is indeed good."
Naruto stood on the deck, praised it, grabbed the air with his bare hands, and the navigation map suddenly appeared in his palm.
Unfolding the yellowed navigation map, the entire Goblin Slayer World was clear at a glance.
Naruto easily found the location of the Black Dragon Monarch, then reset the destination, and the Ghost Ship sailing in the sea of clouds immediately changed direction, speeding towards the Dragonfall Valley where the Black Dragon Monarch slept.