Konoha Laboratory,
Sarutobi Hiruzen appeared once more,
and looked at the Fujin and Raijin brothers, who had slimmed down considerably. He nodded in satisfaction.
The Fujin and Raijin brothers had originally been hulking, heavyweight men,
but after being transformed into Perfect Beings, they had become much slimmer. Sarutobi Hiruzen knew that this did not mean their strength had diminished,
but rather that their bodies had become more perfectly proportioned, bringing them closer to true Perfect Beings.
Walking up to them, Sarutobi Hiruzen released the Cursed Seals on the two brothers.
"Get up!"
Sarutobi Hiruzen ordered,
but Fujin and Raijin remained unmoved. They simply stared blankly at the ground, drool nearly running from their mouths.
Sarutobi Hiruzen knew this was also a side effect of becoming Perfect Beings: they had lost their memories and were no longer in their right minds.
That was also why Sarutobi Hiruzen had not wanted to transplant the bloodline of a Perfect Being directly, and had instead taken the roundabout approach of practicing Immortal Breathing.
But to Sarutobi Hiruzen, this was not necessarily a bad thing.
A Biological Weapon was only a good weapon if it was easy to control, and their blank-minded state also gave Sarutobi Hiruzen an easier way to control them,
Sarutobi Hiruzen then walked up to Fujin,
formed Hand Seals rapidly, and pressed a finger to Fujin's forehead.
"Mental Secret Technique."
"Personality Molding!"
A strange Yin Release fluctuation rose from Sarutobi Hiruzen. The nature transformation of his Yin Release Chakra became a kind of tangible mental energy, invading Fujin's mind without restraint.
Fujin instinctively tried to use Chakra to resist, but he had no idea how. He was unable to withstand the advanced transformation of Yin Release Chakra.
Completely fabricated memories, created through Genjutsu, poured into his mind, gradually filling the void in his consciousness.
Before long, Sarutobi Hiruzen let out a breath, having finished performing the Mental Secret Technique.
This was a mental Ninjutsu Sarutobi Hiruzen had created while in the Demon Slayer World, so that he could control Perfect Beings.
He had drawn on many Genjutsu and the Yamanaka Clan's Mental Secret Techniques, then combined them with his own considerable skill in Yin Release to create the technique.
In terms of learning difficulty, it was undoubtedly S-rank.
But this technique had a very limited range of applications.
If used on an adult with a fully intact mind, it had little effect. At most, it could implant a large number of false memories, but it could not form a complete personality.
If used on a child, the false memories would also struggle to shake the real ones. The best possible outcome would be a split personality.
But Perfect Beings were just right for it. When they were first created, their minds were completely blank, without a trace of their original memories or personalities,
and Sarutobi Hiruzen could use the Personality Molding Technique to shape whatever memories and personality he wanted, thereby controlling the Perfect Weapons.
As Sarutobi Hiruzen watched, Fujin's gaze slowly changed from utterly vacant to showing a glimmer of awareness.
Then, as if he had just woken up, Fujin shuddered and Sarutobi Hiruzen's figure appeared in his pupils.
"Lord Third!"
Fujin immediately dropped to one knee in greeting, showing his respect.
Sarutobi Hiruzen nodded faintly and examined Fujin, whose personality had been molded.
He seemed to have a complete mind, but upon closer inspection, his eyes still looked somewhat vacant and dull.
Sarutobi Hiruzen knew this was a weakness of the Personality Molding Secret Technique—or, more precisely, a shortcoming in his skill with Yin Release.
He could not create true intelligence and sentience, so the minds he created were somewhat rigid, even stiff in their thinking.
"If the Sage of Six Paths had created this with his mastery of Yin Release, he could create beings with complete sentience, even creatures like the Nine Tailed Beasts."
Sarutobi Hiruzen reckoned that Yin Release reached its ultimate form when it could create something from nothing.
Still, the fabricated personalities were good enough for Sarutobi Hiruzen. After all, he did not need Fujin and Raijin to carry out complicated missions. They only needed to fight and obey orders.
Most of the memories Sarutobi Hiruzen implanted were of combat training, along with the absolute priority of obeying his commands.
In other words, he had molded them into the personalities of traditional dead soldiers.
Next, Sarutobi Hiruzen followed the same procedure and filled Raijin's mind with a molded personality.
Half a minute later, Sarutobi Hiruzen let out a breath, looking somewhat weak.
This kind of Secret Technique consumed a great deal of Chakra, as well as mental energy. After using it just twice, even Sarutobi Hiruzen's Chakra reserves were nearly depleted.
Still, as he looked at Fujin and Raijin kneeling before him, their powerful auras bringing even him a faint sense of pressure, Sarutobi Hiruzen nodded in satisfaction.
This was the true trump card that would let him win the Cloud Ninja War: Perfect Biological Weapons evolved from a foundation of extraordinary physical strength.
"Next, I'll test Fujin and Raijin's strength..."
Sarutobi Hiruzen led Fujin and Raijin to an empty clearing,
the very place where he had tested Ninjutsu after first transmigrating.
"Test your strength here."
"Fight each other. Let me see you give it everything you've got!"
Sarutobi Hiruzen gave the order directly,
and Fujin and Raijin bowed in unison beside him, like a pair of gate guardians.
Once they reached the clearing, the two took their stances. In an instant, they vanished from where they stood, then crashed together like two tanks speeding toward each other.
"Boom!"
The immense shockwave shattered a large section of the clearing. With just that first blow, the ground within a hundred meters had been scraped away.
The wind swept Sarutobi Hiruzen's hair back and blew out the cigarette in his mouth,
but he paid no attention, keeping his eyes fixed on Fujin and Raijin's outrageous battle.
Then Fujin and Raijin, their expressions cold, threw punches and kicks, using Konoha Style Taijutsu with reasonable skill.
Unlike ordinary Taijutsu practitioners, however, the two Perfect Weapons seemed to have no sense of defense or evasion. They did not even seem to feel pain.
They let their opponent's attacks land on their bodies, while their own punches and kicks struck back without mercy.
They hardly seemed like brothers at all. Instead, they looked like enemies locked in a fight to the death.
The earth shattered and waves of air rolled outward,
as the two Perfect Beings moved like mighty gods, each action unleashing tremendous force and wantonly wrecking their surroundings.
In moments, the once fairly level, open woodland had been plowed over, left as a wreck that looked as if it had been bombarded.
Sarutobi Hiruzen watched and nodded to himself.
Their physical strength had already surpassed that of Jonin. Then they had been baptized in the Demon King's Blood, raising them to another level.
Their Taijutsu's destructive power was almost on par with the peak of Nintaijutsu.
"They're a little weaker than Tsunade's monstrous strength..."
"But the Perfect Beings' main advantage is their nearly immortal regenerative ability."
Sarutobi Hiruzen watched Fujin and Raijin fight with virtually no defense. He had molded that combat style into them when implanting their memories.
When struck by force of equal magnitude, Fujin and Raijin naturally suffered injuries in their fight. Blood occasionally poured from their mouths, noses, and limbs.
But a Demon's regenerative ability was so powerful that any nonfatal injury healed in the blink of an eye, having no effect on the battle whatsoever.
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