BOOM.
The twin spectral fists of Sasuke's partial Susano'o slammed into Obito's body once more — two massive indigo arms, manifested independently behind Sasuke's small frame like the disembodied limbs of a wrathful god, driving downward with the full, devastating payload of vector-enhanced kinetic force.
The principle behind the combination was elegantly brutal. Vector Manipulation, at its core, was an amplifier — it took existing kinetic energy and redirected it, compressed it, multiplied it through mathematical recalculation of directional vectors. The greater the initial force being manipulated, the more devastating the amplified result. A bare-fisted punch from a seven-year-old, even with vector amplification, produced results that were merely terrifying. But Susano'o's spectral limbs — constructs of condensed chakra that struck with the force of siege weapons even before vector enhancement — provided a baseline of raw power that, when fed through the amplification matrix, produced something that defied conventional measurement.
Sasuke with bare fists was dangerous.
Sasuke with Susano'o's fists was apocalyptic.
This was the second stage of his combat doctrine — not the full Susano'o construct, which drained his chakra reserves at an unsustainable rate, but the selective manifestation of its individual components. Two arms. Two fists. Floating behind him like spectral wings, responding to his will with the speed of thought, striking with the force of falling mountains. The chakra cost was a fraction of the full construct. The flexibility was orders of magnitude greater. And with Vector Manipulation rewriting the kinetic vectors of each blow, the output was devastating enough to make the distinction academic.
The indigo fists crashed into the back of Obito's skull with a sound like shattering granite.
CRACK.
Obito's body folded. His mask — already cracked, already missing pieces — splintered further, fragments spinning away into the dust-choked air. His head snapped forward. His knees buckled. The Hashirama cells in his right half fired desperately, trying to brace his spinal column against the impact, wooden tendrils sprouting from his shoulder blades in an autonomous defensive response.
It wasn't enough.
The vector-amplified force blew through the wooden reinforcement like a bullet through paper. Obito's body was driven face-first into the scorched earth, cratering the ground beneath him, his limbs splaying outward at unnatural angles. Blood sprayed from beneath the ruined mask.
Sasuke's expression didn't change. His face was blank — utterly, eerily blank, devoid of rage or triumph or even effort. The face of a machine performing a function. The face of the Accelerator at work.
But beneath that blankness, his Mangekyō caught something — a flicker of movement in the ruined debris beneath Obito's body. Wood. Pale, organic, growing. Hashirama's cells, attempting once more to regenerate what had been destroyed.
The spectral hands cracked their knuckles.
An eerie sound — the pop and grind of ethereal bones, amplified by the Susano'o's chakra resonance — echoed across the devastated compound. It was an oddly human gesture performed by something fundamentally inhuman, and the wrongness of it made the air feel colder.
Then the fists came down again.
BOOM.
The impact was instantaneous and absolute. The twin fists struck Obito's prone form simultaneously, one targeting his upper back, the other his lower spine. Vector Manipulation compressed the kinetic payloads to razor-thin focal points, concentrating all the force of two building-sized fists into areas no larger than a human palm. The result was less like being punched and more like being struck by two focused artillery shells fired point-blank.
Obito's body exploded.
The detonation of flesh and wood sent fragments spraying in every direction — blood, bone shards, splinters of Hashirama-cell wood, scraps of black fabric. The crater deepened. The shockwave ripped outward, kicking up a fresh cloud of dust that billowed into the already hazy sky.
Then the dust itself ignited.
Sasuke's hands moved — a subtle twitch of his fingers, barely visible — and Vector Manipulation seized the suspended particulate matter in the air, reversing its thermal vectors, compressing kinetic energy into each microscopic grain until the entire dust cloud became a field of micro-incendiary devices. The chain detonation rippled through the atmosphere like a wave of firelight, each particle igniting the next in a cascading explosion that turned the air itself into a weapon.
The blast wave washed over the crater where Obito's remains lay scattered, superheating everything within the radius, fusing the scattered wood fragments into charred husks, cauterizing the blood into blackened stains.
When the light faded, there was nothing left of Obito but ash and splinters.
For approximately four seconds.
Then Izanagi activated — again — and the masked man reformed from nothing at the edge of the blast zone, whole and gasping and wild-eyed with a terror so profound it had transcended the rational and entered the primal.
What remained of his mask — barely half of the original, held together by a single strap — revealed enough of his face to show the expression beneath. His visible eye was wide. His pupil was dilated to its maximum. His jaw hung open, and between his bared teeth, blood and saliva dripped in long, trembling strings.
Monster.
The word echoed through Obito's fractured thoughts on a loop.
This is a monster. This child is a MONSTER.
Even in the Kamui dimension — his personal, private, theoretically inviolable dimensional sanctuary — Sasuke's attack had reached him. The boy had somehow identified the spatial seam connecting Kamui to the real world and had fired kinetic energy through it, bypassing the intangibility that had been Obito's trump card for over a decade. The technique that had allowed him to walk through the Fourth Hokage's attacks, to shrug off ANBU assassination attempts, to treat the entire shinobi world as a stage upon which he was untouchable — cracked open and exploited by a seven-year-old in the space of a single exchange.
And then the punching had started. And it hadn't stopped.
Obito had lost count of how many Izanagi he had burned through. Three? Four? Each one cost a Sharingan eye — permanently blinded, permanently lost. He could feel the gaps in his reserves, like missing teeth in a jaw, empty sockets where crimson eyes had once been stored.
The edge of the Uchiha compound was right there. Fifty meters. Maybe less. Beyond the compound wall lay the rest of Konohagakure — ANBU patrols, other shinobi, the Hokage's response teams. Sasuke wouldn't risk a battle in the open streets of the village. The perimeter was safety. The wall was salvation.
Fifty meters had never felt so impossibly, cruelly far.
From his vantage point at the compound's edge, Itachi watched the beating unfold with an expression that had passed through shock, through horror, through disbelief, and had finally settled on something that could only be described as numb.
Completely, utterly numb.
His mind — that brilliant, disciplined instrument that had orchestrated the most complex covert operation in the Hidden Leaf's history — had stopped trying to analyze what he was seeing. Analysis required a framework of reference. What Sasuke was doing to Obito existed outside every framework Itachi possessed.
Damn it, he thought, and the profanity felt alien in his mind — Itachi almost never swore, even internally. Damn it all.
Seven years. He had spent seven years living alongside this brother, watching him grow, teaching him shuriken technique, poking his forehead with two fingers and promising "next time." Seven years of careful observation by the greatest prodigal genius the Uchiha had ever produced, and he had noticed nothing. Not a single sign. Not one hint that his little brother was hiding power that could casually overwhelm two Kage-level combatants simultaneously.
His plan — his beautiful, agonizing, meticulously constructed plan — had been designed around a specific version of Sasuke. A traumatized child. A frightened boy who would flee into the night and grow strong over years of bitter hatred, fueled by the memory of his murdered family, until he was powerful enough to kill Itachi and become a hero. A weapon forged in grief, aimed in a safe direction, pointed away from the village and toward the convenient target that Itachi had made of himself.
Instead, he had gotten this.
A seven-year-old who was stronger than him. Who had been hiding deeper than him. Who had taken every piece of Itachi's carefully constructed narrative and torn it to shreds with casual, contemptuous ease.
How am I supposed to work with this? Itachi thought, and the question had no answer.
The mysterious masked man — the one who called himself Madara, whose power Itachi had never been fully confident of matching even at his best — was being used as a punching bag by Itachi's little brother. The same man who had single-handedly tamed the Nine-Tails and killed the Fourth Hokage was currently being beaten to death repeatedly, resurrected through Izanagi each time, and then beaten to death again.
Two Kage-level shinobi. Brutalized by a child who hadn't even graduated from the Academy.
What do I do now?
The answer came to him like a lifeline thrown across dark water.
The Third Hokage.
Hiruzen Sarutobi. The Professor. The God of Shinobi in his twilight years, perhaps, but still the most experienced leader the village had ever known. If anyone could navigate this disaster — if anyone could find a way to protect Sasuke without sacrificing everything Itachi had bled for — it was him.
Itachi made his decision. His body screamed in protest as he forced himself upright, but he moved anyway — a flickering, unsteady Body Flicker that carried him toward the compound's perimeter in a series of painful, stuttering jumps.
Outside the Uchiha compound, Hiruzen Sarutobi stood at the edge of the sealed perimeter.
The Third Hokage was dressed in full ceremonial regalia — the white and red robes of office, the diamond-shaped hat bearing the kanji for "fire" — but the authority of his appearance was undermined by the deep lines of worry carved into his weathered face. He stood with his hands clasped behind his back, his pipe clenched between his teeth, unlit, watching the column of fire and dust that rose from the compound interior with the grim expression of a man watching a controlled demolition spiral out of control.
Around him, ANBU operatives moved in practiced formation — establishing a perimeter, redirecting the growing crowd of frightened civilians who had stumbled from their homes in the night, securing every entrance to and exit from the Uchiha district. The ground trembled beneath their feet at irregular intervals, each tremor accompanied by a distant boom and a fresh pulse of light from within the compound.
"What happened?" Hiruzen murmured, more to himself than to anyone nearby. The tremors were getting worse. The explosions were getting louder. Whatever was happening inside was escalating, not winding down.
A sound behind him. Footsteps — deliberate, heavy, accompanied by the rhythmic tap of a cane.
"Hiruzen." Danzō Shimura emerged from the shadows, his single eye fixed on the burning compound with an expression of cold, predatory interest. "What are you waiting for? We should go in now and eliminate whatever is causing this. Before it spreads."
Hiruzen turned to face his old rival. His expression hardened.
"Danzō," he said, and his voice carried a weight of authority that even the war hawk could not entirely dismiss, "you need to remember something. I am the Third Hokage. Not you. No one enters that compound tonight. That is an order." He held Danzō's gaze without flinching. "What is happening inside is an internal matter of the Uchiha clan. We will not interfere. I will not allow you to interfere."
Danzō's eye narrowed. A muscle twitched in his jaw.
"You'll regret this, Hiruzen," he said flatly.
Hiruzen did not respond. He simply turned back toward the compound and continued to watch, his pipe clenched between his teeth, his hands steady despite the turmoil churning behind his eyes.
A moment later — a flicker of movement behind him, silent as a shadow, detected only because decades of combat experience had taught Hiruzen's body to sense disturbances in the air pressure before his conscious mind registered the presence.
He dismissed the ANBU guard at his side with a subtle hand signal and drew the newcomer into the shadow of a nearby wall.
"Something happened?" Hiruzen asked quietly.
The figure leaned against the wall, and a wracking cough tore through his body — wet, deep, the kind that came from broken ribs scraping against damaged lungs. A trickle of blood escaped from beneath a cat-faced ANBU mask and traced down the man's chin.
Hiruzen's eyes widened.
The mask slipped. It fell away from the man's face, clattering to the cobblestones, and beneath it — pale, blood-streaked, exhausted beyond the capacity of words to describe — was the face of Uchiha Itachi.
Hiruzen caught him before he collapsed.
"Hokage-sama," Itachi rasped, his voice a shredded whisper, "you promised me. You promised that Sasuke would not be harmed. That still holds, doesn't it?"
The desperation in those words — the raw, naked pleading from a boy who never begged for anything, who had killed his own parents without flinching, who had accepted the role of villain and traitor and monster without a single complaint — struck Hiruzen like a physical blow.
"What I promised, I will honor," the Third Hokage said firmly, steadying Itachi's swaying body with both hands. "I will never break that vow. But Itachi — what happened to you? Why are you in this condition? What went wrong?"
Itachi's Sharingan — dim, flickering, barely functional — found Hiruzen's eyes.
"Sasuke," he said.
The name came out from between clenched teeth like something being physically extracted — two syllables ground against each other with the force of tectonic plates.
"Sasuke?" Hiruzen repeated, his voice rising with involuntary shock. "Sasuke did this to you?"
Before Itachi could answer, another explosion rocked the compound — louder, closer, more violent than anything that had come before. The ground lurched. A section of the compound wall cracked. Fresh flames erupted into the sky, painting the clouds in shades of hell.
Hiruzen's head snapped toward the conflagration.
Inside the compound, Sasuke was hunting.
The chase had shifted from the compound's center to its periphery over the course of the beating, each successive exchange driving Obito closer to the outer wall as the masked man desperately attempted to flee. Sasuke pursued with methodical, unhurried precision — not running, not sprinting, simply following, his vector-enhanced movements carrying him to Obito's position with the casual inevitability of a predator that knew its prey had nowhere to go.
Every time Obito reformed from an Izanagi, Sasuke was there.
Every time Obito activated Kamui, Sasuke's super-brain mapped the spatial seam and fired kinetic energy through it.
Every time Obito attempted to counterattack — a desperate kunai slash, a hasty Fire Style jutsu, a frantic wood construct from his Hashirama cells — the Susano'o arms deflected, deflected, and then punished.
One punch. Vector-amplified. Through the partial Susano'o.
BOOM.
The explosion sent Obito's latest incarnation cartwheeling through the air. Dust erupted. Then the dust detonated — Sasuke manipulating its thermal vectors again, turning the atmosphere into a secondary weapon that seared Obito's reforming body even as Izanagi struggled to undo the primary damage.
What remained of Obito's mask had been shattered down to a jagged sliver covering his right eye. The left side of his face was fully exposed — scarred, pale, twisted with an expression of such complete, abject terror that it would have been pitiable if the man wearing it hadn't spent the evening helping massacre an entire clan.
His single visible Sharingan spun erratically. His breathing was ragged, hitching, almost sobbing.
Monster, the word pounded through his skull like a heartbeat. Monster, monster, monster—
He had been hit inside Kamui. He had been pulverized through Izanagi. He had been detonated, cratered, shattered, and reassembled more times in the last twenty minutes than in the entire rest of his life combined. Every defense he possessed — Kamui, Izanagi, Hashirama's cells, raw combat experience — had been analyzed, countered, and turned against him by a child who seemed to understand his abilities better than he did himself.
It was unsolvable.
The word kept circling back. Unsolvable. There was no counter. There was no escape route that Sasuke couldn't close. There was no technique in Obito's arsenal that the boy hadn't already cracked.
The outer wall of the compound was right there. Twenty meters. Ten.
Obito ran. Sprinted. Abandoned every pretense of dignity, every shred of the Madara persona, every trace of composure, and simply ran — pouring every remaining ounce of chakra into his legs, his Sharingan scanning for any opening, any crack, any sliver of escape.
Five meters from the wall —
A figure dropped into his path.
Not Sasuke. Someone new. A man in a Root-style blank mask, wearing the standard dark uniform of Danzō's operatives. Lean, composed, carrying himself with the quiet confidence of an Elite Jōnin.
Shimura Hōki. Danzō's son.
The Root operative had slipped through the perimeter at his father's command — an intelligence-gathering mission, nothing more. Assess the situation inside the compound. Report back. Simple enough for a shinobi of his caliber.
He had been inside the compound for approximately three seconds when Obito's battered, rag-doll body came hurtling through the air directly at him.
Hōki had no time to react.
The gap between an Elite Jōnin and a Kage-level combatant was the gap between a candle flame and a forest fire. Obito's body — propelled by the residual kinetic energy of Sasuke's latest Susano'o punch — struck Hōki with the force of a hurled boulder. The Root operative's defensive stance crumbled instantly. His guard shattered. His body folded around the impact like paper around a stone.
Blood erupted from Hōki's mouth. His mask cracked.
Before he could process what had hit him, a massive indigo hand — translucent, spectral, burning with dark blue fire — closed around his entire body. Susano'o's grip lifted Hōki off his feet and held him suspended in the air, his limbs pinned, his torso compressed, the pressure increasing steadily.
Sasuke landed on a charred roof beam nearby, the Susano'o arm extending from behind his back like a crane arm, Hōki dangling in its grip like a ragdoll held by a giant.
The boy's Mangekyō scanned the Root operative's blank mask with cold, clinical interest.
"Root," Sasuke murmured, recognizing the distinctive uniform and mask design immediately. "One of Danzō's dogs." He tilted his head. "Tsk."
The sound — that single, contemptuous click of the tongue — contained more disdain than most people could express in a full speech. Sasuke dismissed Hōki from his attention as thoroughly as one might dismiss a fly, turning his gaze back toward the compound's perimeter.
Obito was running.
The masked man had seized the distraction — those precious few seconds of Sasuke's attention being diverted by the Root operative — and was sprinting for the compound wall with every last shred of speed his battered body could produce. He had died so many times tonight. His Sharingan reserves were devastated — most of the spare eyes he had stockpiled for Izanagi were gone, permanently blinded, sacrificed to undo death after death after death. The psychological toll was even worse than the physical one. The memory of each death — the sensation of being obliterated, the instant of darkness, the disorienting snap of Izanagi rewinding reality — had accumulated in his consciousness like layers of scar tissue on a wound that was never allowed to heal.
The wall. The wall was right there.
Obito felt something he would never, under any other circumstances, have admitted to feeling.
Tears.
Actual, physical tears, blurring his single functional Sharingan, streaming from beneath the jagged remnant of his mask. Not tears of sadness. Not tears of rage. Tears of pure, unadulterated relief as the compound wall drew closer — because beyond that wall, there were other shinobi, there was the Third Hokage, there were witnesses and complications that would force Sasuke to stand down.
Since when had the perimeter of the Uchiha compound become a finish line? Since when had "escape" meant running toward the Hidden Leaf's forces rather than away from them?
Since a seven-year-old boy had made the open battlefield more dangerous than any fortress, any army, any Kage that Obito had ever faced.
I never want to fight that thing again, Obito thought, and the words were not bravado or strategy. They were a vow. A prayer. The sincere, heartfelt resolution of a man who had stared into the abyss and watched the abyss stare back with spinning crimson eyes and a blood-streaked grin.