Rasa's current state was truly wondrous. Many of the advanced theoretical applications of electromagnetic force were subjects reserved for graduate students or research institutes, and he lacked the academic foundation for them.
However, the electromagnetic force felt as if it had always belonged to him. Even without understanding the underlying principles, he could wield it; as long as he had an idea and the capacity to support it, he could master it after a few attempts.
Ōnoki would never understand the principles behind the Dust Release: Detachment of the Primitive World Technique, yet he could use that technique to decompose the vast majority of objects—it was much the same feeling.
To master his new "cheat" as quickly as possible, Rasa spent the next few days in seclusion, dedicated to developing more powerful abilities to cope with the coming war.
After several attempts, Rasa grasped the application of his power and his current limits.
He was stronger than the early-stage Magneto, who could only move coins; he could manipulate the vast majority of metals, the very elements most susceptible to magnetic fields and magnetism.
This meant that Rasa's Magnet Release no longer had any flaws—it was now universally compatible.
The Third Kazekage's Magnet Release had the strongest control over iron elements, while Rasa's original Magnet Release had been specialized for gold elements, specifically Gold Dust.
Gaara also possessed the Kekkei Genkai of Magnet Release, which allowed him to control sand even after the One-Tail was extracted.
His limit of control was hard to define, but in layman's terms, it was roughly 70 kilograms within a range of 150 meters, with little impact on precision within that radius.
The energy consumed to use the ability could be mental energy or chakra, as chakra was, after all, a combination of mental energy and cellular vitality.
There was a hint of Einstein's Unified Field Theory in this aspect.
Directly manipulating metal elements to reassemble them into various weapons was still beyond his reach. Rasa estimated that he would need his [Electromagnetic Force Precision] to reach Lv3 to achieve that level.
Therefore, the best way to increase his combat power for now was to directly manipulate shuriken, kunai, and longswords, using electromagnetic force to accelerate them—invincible because of their speed, unbreakable because of their velocity.
As long as he didn't encounter someone like Uchiha Madara who could pilot a "Gundam," or the Third Raikage with his off-the-charts defense, Rasa was confident he could take an enemy general's head in a single strike!
Now he was Rasa the Joyous, the little scholar of the magnetic arts!
To perfect his abilities, Rasa borrowed various iron implements from the village to test which shapes he could manipulate most effectively.
At the same time, he brought in his brother-in-law, Yashamaru, to serve as a standard Chunin unit and his experimental subject.
Pointing at a target a hundred meters away, Rasa took out a standard Sunagakure shuriken, handed it to his brother-in-law, and ordered, "Throw it with all your might."
"Target that mark. Let me see your level."
"Brother-in-law, that's simply impossible."
Yashamaru looked troubled and muttered, "For an ordinary Chunin, being able to hit the bullseye consistently within twenty-five meters is already the mark of a master."
"Even for a Jonin, unless the shuriken contains chakra-conductive metal, few can maintain precision beyond thirty-five meters."
"Thirty-five meters is the limit. Even the Uchiha clan of Konoha can only enhance their control within this range; they cannot increase the effective lethal distance."
An effective range of thirty-five meters was similar to a bow and arrow, far superior to the throwing knives of his past life. Limited by shape and mass, the lethal range of throwing knives was at most a dozen meters or so.
"Just throw it, stop talking so much." Rasa slapped Yashamaru on the head, urging him on.
This simple action actually made Yashamaru feel sweet, much like the protagonists in Tang Dynasty novels who loved being kicked in the rear by Li Shimin.
His brother-in-law had always been rather cold and rarely showed such intimacy; it seemed his time in the Kazekage's office had a profound impact on him!
Seemingly encouraged, Yashamaru gathered his chakra, aimed at the target a hundred meters away, and threw the shuriken with all his might.
The shuriken flew out with a whistle, cutting through the air. Sure enough, around the thirty-meter mark, its speed dropped significantly, and its trajectory began to drift.
At fifty meters, it even followed a trajectory similar to a "knuckleball" in soccer, falling to the ground as if struck by anti-aircraft fire, embedding itself into the yellow sand.
"I've embarrassed myself before you, brother-in-law."
Yashamaru said modestly, "The wind is light today and the direction is steady; that was an extraordinary performance for me."
Rasa analyzed it intently. It was indeed as Yashamaru said; the effective lethal distance was around thirty meters.
Within this distance, not only was the trajectory fixed, but the shuriken's flight speed was around 160 meters per second—roughly 700 km/h—but it dropped sharply beyond thirty meters.
The muzzle velocity of a bullet was about 400 meters per second, which showed that the force exerted by an arm throw was clearly inferior to the force of gunpowder on a bullet.
Moreover, limited by the aerodynamics of the shuriken's shape, its effective lethal range was also inferior to a bullet. It seemed even ninjas had their limits.
Behind him, various iron implements were lined up: from shuriken, kunai, and longswords to iron hammers, iron balls, iron blocks, and iron pots...
Everything was there.
Glancing at the items behind Rasa, Yashamaru looked thoughtful, then suddenly said with pleasant surprise, "Brother-in-law, has your Magnet Release had a new breakthrough?"
"Mm, it broke through just a few days ago."
Rasa nodded. His ability to perform preliminary manipulation of electromagnetic force didn't seem too abrupt to others.
"That's great, that's great! With your strength reaching a new level, you'll definitely be able to completely suppress Pakura. I've long been annoyed by that stuck-up woman!"
Yashamaru couldn't help but be happy for his brother-in-law. Magnet Release: Gold Dust, in terms of pure lethality, was not enough to compare with Magnet Release: Iron Sand.
Although gold was a precious metal, its hardness was clearly inferior to iron, so the original Rasa could only follow the Third Kazekage's style, gathering massive amounts of Gold Dust to win through sheer mass.
In fact, Rasa was also very dissatisfied with Magnet Release: Gold Dust. Aside from being able to film dozens of episodes of "How to Get Rich," its lethality and consumption were clearly not proportional.
Rasa waved his hand. "Don't get excited yet, I haven't even started showing off."
Seeing that his brother-in-law was about to reveal his hand, Yashamaru quickly shut his mouth, stepped aside, and waited expectantly for what was to come.
The electromagnetic force manipulated the iron implements behind him as if they were extensions of his own limbs, without a hint of lag.
The kunai trembled twice before shooting out under the control of the electromagnetic force. There was no trickery—it was purely fast. Under the propulsion of the electromagnetic force, its speed was pushed beyond the speed of sound after twenty meters.
After breaking the sound barrier, it pierced straight through the target, flew for another few dozen meters, and embedded itself into the rock pillar, leaving behind only a hole.
The sudden sonic boom startled Yashamaru. What had happened?
Was someone using explosive tags?
Then, shuriken, long swords, hammers, iron balls, kitchen knives, and iron pots came flying out with a series of deafening BOOMS!
Arranged neatly from largest to smallest, their speed remained constant regardless of their mass, piercing through the targets at twice the speed of sound before embedding themselves into the rock pillar.
CLANG! CLANG! CLANG...
As each iron object fell, it sent shards of rock flying, carving out a massive crater in the stone face!