Devil Fruits were generally divided into three major types: Zoan, Paramecia, and Logia.
Among them, Logia was universally recognized as the strongest.
The mere ability to transform into an element already made Logia users nearly invincible in the first half of the One Piece world!
And among Logia—
There were those that stood at the very peak.
They were nothing short of natural disasters!
The Magma-Magma Fruit!
In the original story, it belonged to the Marine Fleet Admiral Akainu.
It could be said to possess one of the most destructive powers of all Devil Fruits.
When developed to the level of Awakening, it could permanently alter the climate of an entire region.
Punk Hazard had become a land split between ice and volcanoes precisely because of the battle between Akainu and Aokiji.
Magma—
A natural disaster of the world itself!
Before it, how insignificant were humans?
When magma descended, all you could do was run—
Or pray for a better life in your next reincarnation.
Moreover, magma contained numerous toxic substances. Many mass extinction events on Earth were caused by supervolcanic eruptions.
Feeling the power of magma coursing through him, Yoru's eyes flickered.
"This faint red color… it should be the lowest temperature state of magma."
He recalled the data he knew.
When magma first surfaced at around 475°C, it appeared as a faint red glow.
At 550 to 625°C, it turned dark red.
Above 700°C, it became a dangerous bright red.
Above 900°C, it shifted to orange.
Above 1090°C, it turned golden-yellow.
Above 1150°C, it became white.
And at its peak—
Magma could exceed 1300°C!
It could be said that nothing could withstand such terrifying heat.
Even if you somehow survived the temperature, the toxins alone would be enough to kill you.
The title of "natural disaster" for the most destructive fruit was absolutely well-deserved!
Yoru focused, attempting to control the power of the Magma-Magma Fruit.
His right hand—and up to half of his forearm—completely transformed into flowing magma.
"Is this my limit…?" Yoru thought weakly.
At full control, this was as far as he could go.
At the same time, the faint Chakra in his dantian was completely drained, leaving his body exhausted.
"That unbearable pain earlier… was it the Devil Fruit transforming into a bloodline power and rewriting my genes?!"
Pain that affected every single cell could only be explained by genetic alteration.
"…The rules of this world?"
Yoru stared out the window, deep in thought.
"It must be that the Naruto world doesn't allow such foreign power to exist… so it turned into something like a kekkei genkai. But it's different from normal bloodlines—it consumes Chakra, yet also drains physical stamina."
He dispelled his magma state and went into the kitchen, grabbing a small knife.
Without hesitation, he stabbed it into the part of his right arm that hadn't transformed.
Sizzle!
The moment the blade made contact—
It rapidly turned orange from the heat.
"Just as I thought… elementalization still works!"
The spot where the knife struck instantly transformed into magma. Yoru himself suffered no injury whatsoever.
"That means…"
"Taijutsu, kunai, shuriken—ordinary ninja tools can't harm me at all."
This wasn't something trivial.
In fact, during the early stages of a ninja's career, these were the most important combat methods. Even among Jonin, those with superior shuriken techniques often held the advantage.
Why?
Because Chakra was limited.
Most ninjas couldn't use many ninjutsu in a single battle. When fights between equals reached their climax, it often came down to taijutsu and ninja tools to decide life and death.
But Yoru—
With elementalization—
Even if someone stood there and slashed at him, they wouldn't be able to harm a single hair on his head!
"The only question is… can elementalization block ninjutsu?"
Yoru wanted to test it.
But he couldn't exactly walk up to a ninja and say, "Hey, blast me with a jutsu."
And once such a monstrous ability was exposed—
The consequences would be unpredictable.
Konohagakure was not just about the Will of Fire and light.
It also harbored darkness.
"Until I have enough strength to protect myself, I must never reveal my elementalization!"
Yoru's eyes hardened.
"And if anyone does find out…"
"They must die!"
After confirming his elemental ability, Yoru began planning his path forward.
If you obtained a Devil Fruit—
How did you grow stronger?
By developing it!
For Logia fruits, early-stage development could be inferred from the original story.
Once consumed, your body became a natural element.
Which meant—
As long as your physical condition improved, your elemental power would grow alongside it.
Everything—
Came down to physical stamina and body strength!
In other words, the stronger his body became—
The higher the temperature and destructive power of his magma!
Right now, his magma was only a little over 400°C—still far from the upper limit of 1300°C.
Once he reached that limit—
He could begin the next stage of development!
"In the Naruto world, the best secret technique for strengthening the body… is Lightning Release!"
Lightning Release stimulated the body, increasing speed—and after repeated stimulation, it also enhanced physical strength.
As for techniques like the Eight Gates—
They focused on explosive bursts of power rather than fundamentally strengthening the body.
"I can only hope my Chakra nature is Lightning Release…"
Having clarified his future path, Yoru dragged the child's corpse into the yard outside.
With his magma ability—
He reduced it to ashes.
After cleaning up the traces, the exhausted Yoru returned inside and lay down to rest.