Perfected Demon Killer Technique

Inside the cave, a pair of bloodshot eyes stared fixedly outside.

Whoosh, whoosh!

Dense flashes of cold light streaked through the air as sharp kunai embedded themselves directly into the hard rocks all around.

But when the strange man saw that the first thing entering was neither a man nor a woman, but a pile of kunai tied with sizzling, burning Exploding Tags, his pupils suddenly constricted.

"Roar! None of them! Hahaha, then I'll rush out and kill them all!"

Rumble!

The next moment, a terrifying explosion erupted inside the cave, overlapping with the thunder in the sky.

"He's out!"

With a thunderous boom, Uchiha Mikoto shouted a warning as the figure emerged.

Yet when he saw the figure rushing out of the cave, Uchiha Yoru immediately showed an expression of understanding.

As expected! Mikoto's intelligence matched what he had suspected.

"Haha!"

The monstrous figure that rushed out laughed maniacally. Terrifying black patterns spread across his face, visibly expanding and constantly evolving as he transformed into a monster.

That wasn't a tattoo!

It was a Cursed Seal!

"Jugo! Cursed Seal! A natural Sage Body!"

Upon seeing the figure, Uchiha Yoru revealed a hint of delight. Uchiha Mikoto beside him cried out in surprise, "Yoru, you know him?"

At that moment, seeing the monster—especially the black patterns still spreading over his body—Uchiha Yoru coldly said:

"I've heard similar rumors. End this quickly. Don't give his Cursed Seal time to evolve."

Without the slightest hesitation, the two leaped onto separate trees in perfect coordination.

When the monster that had rushed out of the cave spotted its targets, it burst into a crazed, bloodthirsty laugh.

"Haha, blood! I am going to have your blood!"

The frenzied monster charged straight at Uchiha Mikoto. At the same time, Uchiha Yoru formed hand seals from the other side.

"Kill!"

Sizzle...

The next moment, a piercing sound rang out, accompanied by the snapping of Steel Wire. The monster that had rushed out had fallen directly into a Steel Wire trap prepared in advance.

But under the Cursed Seal's enhancement, the monster roared madly and snapped one strand of hard, sharp Steel Wire after another.

Just then!

Fire Style: Great Fireball Jutsu

After gathering Chakra in his throat, Uchiha Yoru suddenly spewed a massive fireball from his mouth, sending it straight at the monster's back.

"Yoru!"

Seeing this, Uchiha Mikoto also shouted. After swiftly completing her hand seals, she spewed out a fireball even larger than Uchiha Yoru's.

Fire Style: Great Fireball Jutsu

Two enormous fireballs struck the monster from the front and back. At such close range, it had no chance to dodge.

More importantly, the frenzied monster had no intention of dodging at all. With an angry roar, it punched toward the enormous fireballs.

Brute force!

Rumble!

The fireballs exploded amid the curtain of rain, while the rumbling thunder overhead concealed the sounds of battle here.

Rumble!

The explosions of Exploding Tags and ninjutsu echoed continuously through the forest. Amid the devastation, the monster had completely transformed and no longer looked human.

"Damn it! This monster can actually evolve to such an extent!"

Standing on a tree branch, Uchiha Mikoto panted heavily as she stared gravely at the distant monster. Uchiha Yoru, standing to one side, frowned as memories flashed through his mind.

In the original story, Snake Uncle had only discovered Jugo later on, which was how he developed the Cursed Seal.

That clan did not possess a Bloodline Limit, but a special Sage Body. Because they could not control the absorption of Natural Energy, they would go berserk.

Berserk! Unstable emotions!

Thinking of this, Uchiha Yoru immediately made a decision and shouted:

"Sister Mikoto, use genjutsu! This monster's emotions are unstable. He clearly can't control this power. Use genjutsu to draw out the fear in his heart!"

Trusting each other instinctively, Uchiha Mikoto did not hesitate. The Two Tomoe Sharingan in her eyes spun instantly as she formed hand seals.

Genjutsu: Hell Viewing Technique

In an instant, when the monster beneath the rain curtain saw Uchiha Mikoto's tomoe Sharingan, his pupils trembled violently. Then his greatest fears surfaced one after another.

"No! I didn't kill everyone! Don't drive me away... Don't..."

Countless memories flooded his mind, and the monster instantly let out a crazed roar filled with intense fear.

From his frantic words, it could be inferred that he had likely been unable to control himself, killed people from his village, and then been driven out.

As he wandered, his mind became increasingly unstable.

"Good chance!"

When he saw the monster let down its guard and collapse into crying, Uchiha Yoru seized the opportunity and continuously hurled kunai wrapped with Exploding Tags.

They were aimed at vital spots such as the monster's roaring mouth and throat.

Rumble!

As countless Exploding Tags detonated, the monster's mad roars were drowned out by the explosions.

Uchiha Mikoto also let out a muffled groan and covered her eyes in pain. The mental Pupil Power required for the genjutsu had been enormous, and two trails of bloody tears flowed from her eyes. After all, this time she was fighting Natural Energy.

Taking advantage of this opportunity, Uchiha Yoru drew his swords and swiftly slipped into the smoke.

"No... I didn't kill everyone, I didn't..."

Splat!

Blood splattered as a Sword pierced straight through his throat. Half the monster's body had already been blown apart, yet he still spoke in a hoarse, feeble voice.

Forbidden Jutsu: Oniichigo no Jutsu (Perfected)

Using the smoke as cover, Uchiha Yoru had already activated the forbidden jutsu that had been sealed in his mind for twelve years.

Uchiha Yoru raised one hand. A unique diamond-shaped Cursed Seal appeared in his palm and instantly pressed against the other man's forehead.

In an instant, the diamond-shaped Cursed Seal in his palm generated a powerful suction force.

That force continuously devoured the power of the other man's special physique.

At the same time, the monster's transformed body visibly began to recede, revealing his original appearance.

He was a gaunt, white-haired old man without a trace of Chakra, yet after absorbing Natural Energy, he could transform into a monster.

"Yoru!"

With a shout, Uchiha Mikoto hurried into the area as the smoke and dust gradually dispersed, worry written across her face.

But when she rushed in, all she saw was a mangled body pinned to the ground through the throat by a Sword.

"I didn't kill... every... one..."

Rain washed over the ground, turning the surrounding area into a pool of blood. The old man kept repeating himself hoarsely as his pupils began to lose focus.

Uchiha Yoru panted heavily and shook his hand with a grave expression, though inwardly he was alarmed.

The old man had been an ordinary person without the slightest Chakra. Unlike Jugo, who already possessed the strength of a formidable jonin, this old man was also so aged. This Cursed Seal Sage Body was truly terrifying.

"Sister Mikoto, the intelligence was wrong. If we hadn't brought enough Exploding Tags this time, the two of us might have died here."

Faced with Uchiha Yoru's teasing, Uchiha Mikoto's Sharingan remained fixed on the lifeless figure.

Uchiha Yoru let out a long sigh. The diamond-shaped Cursed Seal in his palm gradually vanished, replaced by faint, indistinct Cursed Seal patterns beneath his skin before they finally disappeared from sight.

The Perfected Demon Killer Technique could devour and fuse Bloodline Limits. Its perfection lay in using a great deal of time and Genetic Stabilizing Agent to gradually allow the body to fuse and adapt.

The forbidden jutsu was perfected, but it still required spending money later on. Thinking of this, Uchiha Yoru cursed inwardly. It was all a scam.

His original plan had been to use someone from his own clan who had undergone Eye Awakening, since the rejection between members of the same bloodline would be weaker.

But this Cursed Seal Sage Body was something one could only encounter by chance.

Moreover, he wanted to verify one of his theories now, and it would fit perfectly into Tsunade's plan.

Thinking of this, Uchiha Yoru revealed a solemn expression.