It seemed now that Kei's earlier, seemingly well-intentioned reminder regarding the slums had not only failed to shatter Shisui's worldview, but had instead painted a massive target on Kei's own back.
Faced with such a spectacular misfire, Kei was frankly too exhausted to argue.
In clinical psychology, there is a formal term for this phenomenon: the Backfire Effect.
The core concept is elegantly simple: when an individual's deepest convictions are challenged by contradictory evidence, their beliefs actually grow stronger. You can never wake a man who is pretending to be asleep, and you cannot force truth upon a mind terrified of the dark.
Shisui Uchiha presented himself to the world as a mature, hardened shinobi, but at his core, he remained tragically naive. His ideological framework had been entirely hijacked by Hiruzen Sarutobi's 'Will of Fire.' He was drowning in the escalating political cold war between his bloodline and his village. The calmer and more serene Shisui appeared on the surface, the more desperately his psyche clawed for any glimmer of a peaceful resolution.
This was precisely why Shisui had latched onto Kei after their first encounter. When Kei had bluntly offered him 'destruction,' Shisui's mind had reflexively rejected the diagnosis, but the terror of its accuracy kept him coming back, desperate to prove the blind doctor wrong.
"I will be back," Shisui stated, his eyes hardening as he watched Haru stepping toward the door to escort him out. Without waiting for her, he turned and exited the clinic.
Stepping out into the damp morning air, Shisui felt a dark, roiling frustration settling in his chest. Upon reflection, he realized that in every single interaction he had endured with Kei Hyuga, the doctor had effortlessly controlled the tempo. Shisui had been completely on the defensive.
He had failed to glean any actionable intelligence regarding the unnatural disappearances in the slums, nor had he extracted a single psychological insight that could help him bridge the chasm between the Uchiha and the Hokage.
Using a subtle Shunshin, Shisui relocated to the roof of a three-story building down the street. He crouched behind a chimney, his Sharingan spinning to life as he locked his gaze onto the clinic, and then slowly panned over to the dense, sprawling labyrinth of the slums just a few blocks away.
As he stared at the urban decay, a series of dark, disjointed puzzle pieces began to click together in his mind.
Fact: Kei Hyuga had deliberately chosen to open his psychological clinic in a quiet, low-traffic district bordering the poorest, most neglected sector of Konoha. It was a terrible location for a legitimate business.
Fact: Kei had lost his sight and his Byakugan under highly classified, medically inexplicable circumstances. Immediately following this trauma, the shinobi had pivoted to an entirely new, unquantifiable profession. Was the doctor's own mind truly stable after such a catastrophic loss?
Fact: The night Shisui had discovered the discarded bodies in the mud, Kei had been present in that exact alley, taking an illogical, dangerous detour home.
In Shisui's mind, the image of the serene, blind psychologist began to warp, slowly overlapping with the shadowy silhouette of the serial abductor prowling the slums.
It was entirely circumstantial. A house of cards built on paranoia and desperate leaps of logic. But the seed of doubt had been planted, and Shisui's Sharingan saw only what it was conditioned to see.
Could it really be you? Shisui thought, his fists clenching on the roof tiles. A powerful, irrational instinct screamed that Kei Hyuga was the culprit. He needed to force the doctor's hand. He needed to rip off the mask.
Night fell, blanketing Konoha in deep, bruised shadows. The day's civilian consultations concluded, and Kei locked the heavy wooden door of the clinic, preparing for the walk home.
Since Haru's assignment, only the evening commute truly belonged to him.
Haru did not escort him home at night. Her role was distinct from that of an ordinary Branch servant; she was required to report back to the Main House compound every evening to debrief Taihiro and remain available for nocturnal orders.
Standing alone on the quiet street, Kei's cane hovered over the cobblestones. He knew exactly what he was walking into. Through his sensory perception, he could feel Shisui's dense, coiled chakra lingering on the rooftops near the slums. The prodigy was actively hunting the abductor.
And thanks to Kei's deliberate provocation that morning, Shisui now suspected him.
The logical, safe choice would be to take the well-lit main thoroughfares home, avoiding the slums entirely. But Kei deliberately placed his cane down and turned toward the dark, winding alleys.
If he changed his route now, it would only scream of guilt. He understood the psychology of suspicion perfectly: once a paranoid mind locks onto a target, any deviation in normal behavior is instantly perceived as a confession. Furthermore, he refused to cower. If he wanted to control the board, he couldn't back down from a confrontation.
The slums comprised a relatively small geographic footprint within Konoha. The village, nestled deep within the fertile Land of Fire, was wealthy and resource-rich. The true danger of the slums wasn't the poverty; it was the claustrophobic, maze-like architecture. The alleys twisted and doubled back on themselves, making it incredibly easy for an unfamiliar patrol to become hopelessly lost.
But for Kei, whose spatial awareness was mapped through flawless acoustic and chakra echolocation, the labyrinth presented zero obstacle.
He navigated the dark, winding paths unhurriedly. A few blocks deep into the slums, he abruptly halted.
It was a rare, dry night in Konoha. Without the rain to wash the stone clean, scents and physical traces lingered heavily in the stagnant air of the narrow passageways.
A fraction of a second later, the near-silent whisper of shinobi sandals landing on the cobblestones echoed behind him. Kei didn't need to project his senses to identify the arrival.
Shisui Uchiha materialized from the shadows. He wiped a sheen of sweat from his brow, his chest heaving slightly as he forcibly leveled his breathing. He had been staking out the perimeter of the slums for twelve hours, tracking faint, erratic chakra trails. He had finally caught a scent, only to lose the trail in the maze.
Frustrated and on edge, Shisui had doubled back, only to find Kei Hyuga standing perfectly still in the center of the dark alley.
Shisui's crimson Sharingan locked onto the ground just a few feet ahead of where Kei was standing. A thin, elongated smear of fresh blood stained the cobblestones.
Brushing past the blind doctor, Shisui knelt by the stain. The metallic tang of blood was undercut by a distinct, foul odor—the smell of unwashed bodies and deep sickness. The scent of the homeless.
But the alley was entirely empty. The victim was gone, leaving nothing behind but the blood.
"If I told you I just arrived at this exact spot myself, would you believe me?" Kei asked, his voice echoing calmly in the narrow space.
Shisui rose slowly, his eyes burning into Kei. He chose not to speak. Instead, he vanished with a Shunshin, executing a frantic, high-speed sweep of the immediate vicinity.
He vaulted over walls, checked the adjacent alleys, and scanned the rooftops. One, two, three grids.
Nothing. The trail was dead.
Having found zero physical evidence of the abductor or the victim, Shisui reappeared in the alley, physically blocking Kei's path toward the exit.
"There is no one else in this sector," Shisui stated, his voice tight and accusatory. "And you were inexplicably present at the scene of the last incident as well."
Kei stood perfectly still, 'looking' at the elite shinobi blocking his way. He tilted his head slightly. "And your conclusion is?"
"Do you have anything you wish to confess?" Shisui demanded, his hand dropping dangerously close to the hilt of his tanto. "If not, I am officially detaining you to search your person."
"I have absolutely no need to confess to a crime I did not commit," Kei replied, shaking his head slowly. "As for a physical search... I apologize, but I firmly refuse."
"You do not have the right to refuse!" Shisui snapped, his patience shattering.
"And you have the legal authority to execute a warrantless search on a Konoha citizen?" Kei countered, his voice turning to ice. "Are you officially accusing me of serial abduction, Uchiha? Because if you are, I demand you summon the Military Police."
Shisui's jaw locked. He couldn't summon the Police Force. He had zero concrete evidence, and dragging a prominent member of the Hyuga clan into custody on a hunch would ignite a political firestorm between the two noble houses.
However, his Sharingan was fixated on the distinct, rectangular bulge hidden beneath the left breast of Kei's coat.
A storage scroll, Shisui deduced instantly. If Kei was sealing the unconscious victims into a high-capacity scroll, it would perfectly explain how the bodies were vanishing without a trace.
When Kei realized Shisui was not going to back down or summon authorities, he let out a sharp sigh and stepped forward, intending to force his way past the Uchiha.
As Kei brushed past him, Shisui's shinobi instincts overrode his political caution. His hand shot out with blinding speed, grabbing the thick bulge beneath Kei's coat, intending to rip the suspected storage scroll free.
Kei, naturally unwilling to be assaulted in a dark alley, reacted with pure, honed Chunin reflexes. He violently twisted his torso and clamped his own hand down over Shisui's wrist, trapping the Uchiha's grip against his chest.
The heavy brown paper bag hidden in Kei's pocket, caught squarely in the vice grip between two highly trained shinobi, instantly ruptured.
RIIIP.
With a dull pop, the bag burst open.
A torrential shower of high-denomination ryo notes exploded into the air. Hundreds of crisp bills fluttered through the dark alley like a localized snowstorm, raining down over their shoulders and scattering haphazardly across the muddy cobblestones.
The alley plunged into an agonizing, dead silence.
Shisui froze. His Sharingan tracked the falling money, his brain completely short-circuiting as the reality of the situation crashed over him. There was no storage scroll. There were no bodies. He had just assaulted a blind, crippled civilian doctor in an alleyway to steal his life savings.
A suffocating, physically painful wave of humiliation washed over the prodigy. The blood rushed to his face, burning his cheeks dark red. His hand fell away from Kei's coat as if he had been burned.
"Are you satisfied now, Commander?" Kei's voice was barely above a whisper, but it pierced the silence like a poisoned needle.
Shisui stared at the blind doctor, who was looking down at his ruined coat with an expression of absolute, glacial disgust. Shisui instinctively took a step back, his mouth parting slightly. He desperately wanted to explain, to apologize, to justify his paranoia.
But no sound came out. He was entirely paralyzed by his own monumental failure.
Kei ignored the stunned prodigy. He didn't even bother to bend down to collect the scattered fortune. He merely raised his metal cane, pointing the iron tip directly at the sea of banknotes blanketing the mud.
"Remember this," Kei said, his voice ringing with absolute, chilling authority. "You owe me."