Earlier that day -- The Watchful Eyes

  The city lights flickered in the distance as Rei walked through the quiet streets, his mind still uneasy from the lingering sensation of being watched. The afternoon sun cast long shadows across the pavement, creating dark pools that seemed to follow his every step. He had dismissed it earlier, telling himself it was paranoia.

  But he was wrong.

  A tall, slender man crouched atop a nearby rooftop, his breathing controlled, methodical. His body was unnaturally still, adapting to the environment with chameleon-like precision. His goggle-covered eyes moved independently, like a reptile's, scanning multiple areas at once—one eye locked onto Rei, the other surveying his surroundings. His physical adaptations granted him full situational awareness, allowing him to track prey without giving away his position.

  This was no ordinary observer. This was Sylvester, one of the Assassin Guild's midtier operatives. Not as prestigious as Kage had been, but effective—especially at surveillance.

  He had been watching Rei's every move. Studying him. Analyzing his patterns.

  And now, it was time.

  Rei reached his apartment, unlocking the door. The moment the door clicked shut, the assassin known as Sylvester readied his approach. His knees bent, lungs expanding threefold as he inhaled deeply, preparing to lunge across the street in one swift, lethal movement.

  Then—

  A hand gripped his shoulder.

  "Going somewhere, Sylvester?"

  The assassin's body tensed. He twisted his head—only to see Haikito standing behind him, his piercing blue eyes filled with amusement.

  Sylvester's heart pounded. "You're—you're Haikito!"

  His voice betrayed his surprise, tinged with something else—fear. Haikito's reputation preceded him, even in the shadows of the Underworld.

  Haikito smiled. Not a warm expression, but a predator's acknowledgment of prey. "Surely you're not underestimating your target now, are you?"

  The words carried a mocking tone, needling at professional pride.

  Sylvester's eyes narrowed behind his goggles. "I don't know what you're talking about," he replied, feigning ignorance despite the obvious lie. "I was just getting some fresh air."

  "Someone hired you to kill Rei, didn't they?" Haikito's voice was calm, almost conversational, but his eyes had hardened. "The boy who lives in that apartment."

  Sylvester hesitated, then shrugged with forced casualness. "Contracts come and go. Nothing personal about it." His reptilian eyes focused on Haikito with new intensity. "That's how the Guild works. We don't ask questions. We don't care about the targets themselves. Someone pays, someone dies."

  His expression darkened. "But you... you took Kage from the guild! You're using him for your own personal bidding!"

  The accusation hung in the air, charged with resentment. Kage had been their elite, their exemplar—until his mysterious disappearance. And now here was the apparent cause, standing before him with casual arrogance.

  "Assassins have only one rule," Sylvester continued, venom in his voice. "Follow the contract you choose to accept. I don't care who or what that twerp is. The contract says he dies, so he dies."

  Haikito shrugged. "My business with Kage is none of your concern. But tell me, did the Assassin's Guild really send just one lackey to kill that boy?" His smile widened, taunting. "You're barely a four-star threat to the Academy, and you think you can handle him alone? That's laughable."

  The dismissal stung, driving Sylvester's anger higher. His lungs swelled again—his ribcage expanding grotesquely, far beyond human limits. The skin stretched unnaturally as his chest nearly doubled in size.

  With a deep inhale, he spit out a massive stream of acidic venom, the toxic liquid sizzling as it cut through the air toward Haikito.

  You could be reading stolen content. Head to the original site for the genuine story.

  But—

  Haikito's piercing blue eyes dulled.

  The acid stopped mid-air.

  It splashed harmlessly against an invisible barrier surrounding him, the deadly liquid dripping to the ground where it began to eat through the concrete rooftop.

  Sylvester's pupils shrank in shock. "What...?"

  This isn't right, he thought, his mind racing. Everyone said Haikito's Concept was Premonition—the ability to see into the future. But this... this is something else entirely. Something more.

  He had no time to process.

  Haikito closed the distance instantly, gripping Sylvester's head with one hand. His fingers pressed into his skull like a vice, the pressure just short of crushing bone.

  "Let's take this somewhere quiet."

  Before Sylvester could react—Haikito threw him.

  With tremendous force, Sylvester's body launched through the air like a ragdoll, crashing through streetlights, bouncing off car hoods, and slamming into buildings. Each impact should have broken bones, ruptured organs—would have killed a normal human.

  Pain shot through his ribs. He coughed violently, blood pooling in his mouth as he skidded across the pavement, rolling to a stop in an abandoned construction site several blocks away.

  His breath hitched. "That... that wasn't just mana reinforcement... that was something else!"

  His body had felt light—like something had forcefully reduced its mass before hurling him away at impossible speeds.

  This is a disaster, Sylvester thought, his vision swimming. The Guild said Haikito was dangerous, but this... this is beyond what anyone reported. No wonder the higher-ups had such difficulty with him.

  But before he could compose himself—

  A fist caved into his ribs with devastating impact.

  Sylvester's entire body lurched, a sickening crack echoing in his chest as he collapsed to his knees, coughing blood. The blow had come from nowhere—Haikito appearing beside him with speed that defied comprehension.

  Haikito loomed over him. "Take this pain as a warning," he said, voice calm but chilling. "You're going to need a lot more than that to kill the boy."

  Gritting his teeth, Sylvester pushed himself up. His body emitted a thick, yellow-green gas, a toxic miasma that began consuming the air around them. The cloud expanded rapidly, filling the construction site with poisonous vapors that would dissolve flesh on contact.

  Haikito didn't move.

  "You're Sylvester, and your concept is Acidity," Haikito stated coldly, unimpressed. "You can generate acid from your body. You can secrete it as armor to negate physical contact. You've been in the Assassin's Guild for four years. You've killed men from my Academy."

  Sylvester's breath hitched. "How do you—"

  "I know everything I need to about you," Haikito interrupted. His voice dropped to a low, predatory growl. "And you clearly know nothing about me."

  A sudden gust of pressure erupted from Haikito's position.

  The sheer force of it dispersed the toxic gas instantly, as if a hurricane had materialized in the blink of an eye. Debris from all over the construction site began flying away from Haikito. Windows in nearby buildings shattered, and even cars parked on the street began trembling.

  Sylvester's body was lifted off his feet—the wind throwing him backward like a ragdoll.

  Impossible, Sylvester thought, terror mounting. Did he manipulate gravity itself? Or is it some form of telekinesis? This goes beyond any Concept I've ever encountered.

  As the windstorm ceased, Sylvester barely had time to register what happened before Haikito's hand latched onto his ankle.

  With effortless ease, Haikito swung him into the side of a half-finished building, sending him crashing through the concrete.

  Sylvester felt his spine crack. He fell through the rubble, only for a brutal boot to kick him mid-fall—driving him into the basement floor with bone-shattering force.

  The entire building collapsed.

  Through the falling debris, Haikito walked forward slowly, unhurried.

  Sylvester's entire body shook.

  The rubble never touched Haikito.

  Each falling piece of concrete stopped inches from his skin, hovering, before harmlessly sliding away. It wasn't a barrier—it was as if gravity itself bent to his will.

  Sylvester's breath came in ragged gasps. "No wonder Kage had a hard time with him..."

  His vision blurred—then, darkness swallowed his mind.

  A cold hand gripped his throat.

  Sylvester's eyes snapped open in pure terror as Haikito lifted him off the ground. Consciousness returned solely due to the primal fear coursing through his system.

  The man's dull blue eyes suddenly sharpened, glowing with a supernatural, piercing intensity.

  "Listen carefully," Haikito whispered.

  "If someone put a contract on that boy, I'd suggest sending more than just one pathetic excuse for an assassin."

  He let go.

  Sylvester's body fell limply, but before his feet could even touch the ground—

  A devastating fist drove into his kidneys.

  Sylvester choked, his eyes rolling back as saliva spilled from his lips.

  His body collapsed into a broken heap.

  Haikito grabbed him by the hair, pulling him up just enough to whisper in his ear.

  "Take this humiliation, this pathetic failure, and let it burn into you," Haikito murmured. "Let it fuel your hatred."

  He leaned in closer.

  "Maybe you should care about what that twerp is," he said mockingly. "If you think I'm scary, that boy hides something worse than me inside him."

  Haikito's smirk widened, his eyes gleaming with something like anticipation.

  "And when you think you're ready—"

  He released Sylvester, only to drive one last devastating blow into his already shattered ribs.

  "—come try again, if you dare."

  Sylvester crumpled like a ragdoll, twitching faintly, barely clinging to consciousness.

  Haikito turned on his heel.

  With measured steps, he walked toward Rei's apartment, his hands in his pockets, as if nothing had happened.

  Sylvester lay there, his vision fading. His lungs ached. His body refused to move.

  As Haikito disappeared into the distance, two thoughts consumed his shattered mind.

  "How the hell do you kill a monster like that...?"

  And more disturbingly:

  "Just who is that brat?"