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  “It’s not just the hospital,” she said, scanning the pages. “I traced Foundation event support contracts and designated maintenance vendors. There’s a pipeline from SGMF tagged as ‘Medical Equipment Support.’ The vendor receiving it has authorized access to this hospital.”

  Oh Se-na quietly pulled out a sharpened pencil. The tip looked like a needle.

  “The dates where the records go blank…” she murmured, already moving. “I’ll cross-check them again against today.”

  Ha-jun flipped open his laptop right there on the sidewalk.

  “And Hyung—if we can’t legally touch Seo-hyun’s direct medical file, the management system logs are archived separately under operational statistics. Access privileges, update timestamps, maintenance statuses—it’s system data, not patient data. Different firewall.”

  Jin-woo exhaled once, a white cloud in the air.

  “Good.”

  He looked at all of them in turn.

  “Two fronts. First: identify the cause of Seo-hyun’s management termination. Second…” His voice dropped. “We catch the ghost that just walked into this hospital.”

  Seo-hee gave a dry laugh. “A ghost. In a hospital.”

  “If it’s not a ghost,” Jin-woo said quietly, “then who just cut a patient’s lifeline and texted me?”

  Min-su began turning the bezel of his watch—a habit that surfaced when things got lethal.

  “If that’s the case, odds are high we have a physical operative inside or near the perimeter,” he said, scanning the street. “I’ll sweep the exterior and watch the primary access routes.”

  Seo-hee glanced at him. “You? Field work?”

  Min-su smirked. “Field operative or comic relief, I’m still a physical human being.”

  Seo-hee didn’t smile. But some of the tension in her face eased by a fraction.

  “Move,” Jin-woo said.

  The seven split in front of the hospital doors. To anyone watching, they looked like ordinary people going their separate ways. Underneath, each of them was carrying a blade.

  Jin-woo pushed back through the sliding doors into the bright lobby.

  People stared at him—the soaked coat, damp hair, the look of someone who belonged anywhere but here. He ignored them. On battlefields, civilians always look at you like you are an anomaly.

  As he approached the elevator bank, someone at the edge of his vision caught his attention.

  A man in a maintenance uniform. ID badge on a lanyard. Head slightly bowed. One hand holding a phone.

  Too steady.

  That is not a technician’s hand.

  Real maintenance workers had busy hands. They moved before they touched anything, already anticipating the next machine. This man was not preparing to touch a machine. He was mapping the space around him—sightlines, sounds, movement.

  A chill crawled up Jin-woo’s neck.

  The man pressed the Up button.

  Jin-woo stepped forward and pressed it too, with perfect casual timing.

  The elevator doors opened. They stepped in side by side.

  The maintenance worker glanced at him once.

  A quick calculation. Predatory.

  “Which floor?”

  The question came too cleanly. It sounded like polite small talk, but it was a checkpoint.

  Jin-woo let his shoulders sag and his voice turn clumsy.

  “Ah… me? Honestly, I’m lost. Why is every hospital layout designed to punish people?”

  The man smiled politely. Not a service smile. A checkpoint smile.

  “Visiting a patient?”

  Jin-woo gave a small, nervous chuckle.

  “Yeah, well… ‘visiting’ might be generous, but luckily for me…”

  He trailed off on purpose, letting the sentence dissolve into harmless babble while his eyes dropped to the ID badge.

  The logo was wrong.

  Tiny angle error. Slight kerning mismatch. Same type family Hyun-ah flagged on the forged contracts—but not the real print standard.

  Fake.

  Ding.

  The elevator stopped.

  As the man shifted to step out, Jin-woo moved.

  A tiny extension of his right foot—just enough to look like a clumsy stumble.

  The man’s toe caught.

  As he pitched forward, Jin-woo shot a hand out and grabbed his elbow.

  To the hallway cameras, it would look like a bystander catching someone from falling.

  In reality, it was violent precision.

  Jin-woo’s thumb drove into a nerve cluster inside the arm. The man’s fingers spasmed open. His phone dropped.

  The man’s eyes changed instantly—polite mask gone, lethal intent exposed.

  That was the final confirmation.

  Jin-woo flashed an apologetic grin.

  “Oh, wow—sorry. I’m ridiculously clumsy today.”

  The man lunged for the phone.

  Jin-woo was faster. He scooped it up.

  The screen lit on motion.

  A line of text glowed on the display:

  [ VIP Protocol — Pending Re-registration ]

  The grin vanished.

  Jin-woo looked up, eyes cold.

  “What exactly is this?”

  The man lunged. “Give that back.”

  Jin-woo smiled.

  “No.”

  The instant the man grabbed his wrist, Jin-woo twisted.

  Crack.

  Not a dramatic break. A wet, sickening pop—joint and cartilage violently displaced. More than enough to end a fight.

  The man hissed through his teeth.

  “We’re in a hospital,” Jin-woo said quietly.

  The man stared at him through pain. “Who the hell are you?”

  “Just a lost manager.”

  Jin-woo pivoted and pinned him against the corridor wall. No wasted force. Too much force made noise, and Jin-woo hated noise.

  The man’s free hand twitched toward his pocket.

  Jin-woo wrenched the dislocated wrist a little further.

  A small metallic object fell and clattered across the floor.

  A syringe.

  Jin-woo’s gaze sharpened.

  Min-su had been right. The hospital wasn’t his battlefield.

  But someone else had already made it one.

  Jin-woo kicked the syringe down the hall, out of reach, then drove his forearm across the man’s throat with controlled pressure.

  “Where is Seo-hyun’s room.”

  The man kept his mouth shut.

  Jin-woo sighed.

  “If you don’t talk,” he murmured, “I can take this wrist a lot farther than dislocation. I’d rather not. We are in a hospital.”

  The man endured the pain, then gave a small laugh.

  “You’re already too late.”

  Jin-woo’s stomach dropped.

  At that same second, his phone vibrated.

  A message from Min-su:

  [ Two suspicious vehicles in the parking structure. ]

  [ One has a ‘Foundation Event’ VIP sticker. ]

  [ The other has swapped plates. ]

  [ They’re moving. ]

  Jin-woo pressed harder into the man’s throat.

  “You were moving on her room right now.”

  The man’s eyes gleamed.

  “They’re entering as we speak.”

  The moment the words left his mouth, Jin-woo locked him in place with his knee, touched his collar, and spoke into the hidden earpiece.

  “Ha-jun.”

  (Ha-jun’s comms channel looked like a standard encrypted group call on the surface—clean, legal, invisible.)

  “Hyung!” Ha-jun answered immediately.

  “Ward level. Male operative in maintenance uniform. Counterfeit badge. His phone shows ‘VIP Protocol—Pending Re-registration.’ They are actively moving on Seo-hyun’s medical line.”

  Unauthorized duplication: this narrative has been taken without consent. Report sightings.

  Ha-jun gasped. “That’s it—the deletion and re-registration routine. The moment her records went blank… that was this protocol initializing.”

  Jin-woo’s eyes hardened.

  “Block it.”

  “I will! But Hyung—it’s not a normal server. It’s an automated medical management device. It won’t fully stop without a localized authentication key from inside the hospital. It needs a physical admin action.”

  Jin-woo already knew the answer.

  Han So-hee.

  “Where is So-hee.”

  “At the admin terminal right now,” Ha-jun said. “She’s pushing the formal inquiry request through hospital contacts.”

  “Tell her to execute authentication override immediately,” Jin-woo ordered. “If Seo-hyun’s records finish re-registration, she is functionally erased.”

  “Yes!”

  Jin-woo did not release the man.

  The operative looked up and smiled through blood.

  “No matter what you do… the procedure reaches its destination.”

  Jin-woo leaned in close.

  “Procedures,” he whispered, “are stopped by humans.”

  A commotion burst from the ward side.

  Someone in a hospital gown ran into the corridor shouting for a nurse. A nurse grabbed her radio, face pale. Staff attention snapped toward the disturbance.

  Jin-woo recognized the pattern immediately.

  Misdirection.

  While everyone looked at the noise, the second operative would move on the room.

  He kept his knee pressed into the pinned man and scanned the corridor.

  At the far end, he caught a glimpse of a second maintenance uniform slipping around a corner.

  His jaw tightened.

  Two.

  Another message hit from Min-su:

  [ One vehicle prepping for departure. ]

  [ Another person exited and is heading to main entrance. ]

  [ From the Foundation Event sticker car. ]

  Jin-woo inhaled once, controlled and sharp.

  “Min-su. If anyone from that vehicle enters the building, intercept and detain. No noise. We are in a hospital.”

  Min-su’s bitter laugh came through the earpiece.

  “Hey, I’m only human. …Fine. Got it.”

  Jin-woo shoved the operative’s phone into his coat, grabbed the man by the collar, and dragged him into the emergency stairwell. The heavy fire door slammed shut and the hallway noise vanished.

  He dumped the man onto the concrete landing.

  “The interrogation starts now.”

  The man laughed through pain. “You think I’m going to talk?”

  Jin-woo nodded once. “You will.”

  “Why.”

  “Because,” Jin-woo said, stepping closer, “you want to brag about how normal your operation looks from the outside.”

  The man’s eyes flickered.

  Jin-woo saw it.

  “VIP Protocol Re-registration,” he said, low. “Who issues final approval.”

  The man bit down on his lip and stayed silent.

  Jin-woo pressed harder. “S-2 is in custody. What keeps you moving?”

  The man smirked.

  “Did you really think his arrest meant it was over?”

  Jin-woo’s stare went flat.

  “We do not trust humans,” the man said, like reciting doctrine. “We trust procedures. Humans die. Procedures remain.”

  A cold wave ran through Jin-woo.

  That was it. The entire philosophy. The system S-2 built in one sentence.

  “Where does the procedure originate.”

  A pause.

  Then, almost unwillingly: “…The maintenance vendor.”

  “And today’s termination of Seo-hyun’s management…”

  The man looked up, eyes bright with fanatic certainty.

  “That was only the beginning.”

  Jin-woo stopped breathing for a beat.

  The beginning.

  Not the end. Opening move.

  Han So-hee’s voice broke into the earpiece, breath tight but steady.

  “Manager! The hospital network attempted an Emergency Re-registration Procedure. I used official admin channels to place a hard hold. I blocked it by citing that a procedure of this scope cannot proceed without the patient’s explicit physical signature.”

  Jin-woo exhaled sharply. “Excellent.”

  So-hee’s voice shook with adrenaline.

  “But they’re pushing back aggressively. They’re insisting it’s a pre-scheduled routine action. It sounds like… it was already internally agreed upon.”

  Jin-woo ground his teeth.

  “There’s a mole in administration.”

  Seo-hee’s voice cut in—short, cold, and sharpened.

  “Jin-woo. I got it.”

  “Got what.”

  “An anomalous signature value inside Seo-hyun’s designated line,” Seo-hee said. “It matches the exact cryptographic signature key from the day my brother was killed.”

  The stairwell seemed to lose oxygen.

  Ha-jun came in right behind her.

  “She’s right, Hyung. Same signature habit we found in the 2F Approval logs. This isn’t a live S-2 command. It’s an automated approval habit he planted before he fell.”

  Jin-woo closed his eyes.

  It was never over.

  S-2 had been caught. The guillotine he built had not.

  And now it was moving through a hospital ward.

  Jin-woo opened his eyes.

  “Seo-hee.”

  His voice was steady.

  “It’s time.”

  A beat of silence.

  Then she asked, quietly, “How.”

  “Target the humans,” Jin-woo answered immediately. “The one who authored the procedure, or the one executing it now. Cut either one, the procedure dies.”

  He looked down at the operative on the floor.

  “Who is your superior.”

  The man laughed and spat blood.

  “My superior is not a human.”

  Jin-woo let out a dark laugh.

  “That makes this easier.”

  He ripped the counterfeit badge from the man’s chest. Inside the casing was a microchip—too sophisticated for standard hospital ID. A cryptographic access device.

  Ha-jun gasped. “Hyung—that chip structure might match the Foundation Event VIP pass system. If we cross-check with the maintenance vendor line Hyun-ah found—”

  Jin-woo cut in. “Hyun-ah.”

  “I’m already there,” she said immediately. “Vendor address, registered executive, contract routes—all mapped. There’s a major anomaly. Final authorization didn’t come from the Foundation directly. It came through a Private Individual proxy.”

  Jin-woo’s eyes iced over.

  “A private individual.”

  That meant only one thing.

  Someone from the invisible hand had intervened personally.

  His phone vibrated again in his pocket.

  Another text, same format:

  [ Phantom. ]

  [ The heart you are trying to protect… shall I return it to the bottom of the ocean? ]

  Jin-woo’s hand trembled.

  Barely.

  Min-su, just entering the stairwell from below, saw it.

  He said nothing. He only walked past and tapped Jin-woo lightly on the shoulder.

  Don’t carry it alone.

  That was the message.

  Jin-woo drew in a deep breath until his lungs burned, then spoke with absolute calm.

  “The ocean,” he whispered, “is not yours to touch.”

  Seo-hee’s voice crackled in his ear. “Message?”

  “A threat.”

  She gave a short laugh. “Then we have our answer.”

  “What answer.”

  “Seo-hyun is the key to the mechanism,” Seo-hee said.

  Jin-woo’s face hardened.

  “And,” she added, voice dropping, “you are too.”

  He went still.

  Seo-hee stopped for a beat, then forced the words out differently.

  “You are… also a key.”

  What she meant was weakness. She refused to say it.

  Jin-woo nodded once.

  “I know.”

  His eyes sharpened.

  “And because of that… this time, we sever the line first.”

  Jin-woo returned to Seo-hyun’s room.

  She had fallen into a fitful sleep. Her face was pale, an IV taped to the back of her hand.

  He sat beside the bed in a plastic chair and gently wrapped his hand around hers.

  Her fingertips twitched.

  Even unconscious, a person responded to warmth.

  That simple fact sent pain through his chest.

  Yuri…

  He almost said the name aloud, but crushed it before it left his throat. If he spoke it here, it would feel like reducing the woman in front of him to a vessel.

  So he leaned in and whispered:

  “Live.”

  Barely a breath.

  “You have to live.”

  Seo-hyun’s eyelids fluttered. Her gaze drifted, then found him and steadied.

  “…You didn’t leave,” she whispered.

  Jin-woo forced a small smile. “Leave? I’m a stubborn man.”

  She gave a tiny laugh that turned into a cough. He reached for the water, but she weakly stopped him.

  “…Just,” she breathed, trying to catch air. “Just stay there.”

  Jin-woo nodded. “I’ll stay.”

  She gripped his hand tighter.

  “When I go to the ocean…” she whispered, voice trembling, “my whole body feels at peace. And that terrifies me. I don’t know why.”

  Jin-woo could not answer. The possibility that her “peace” was a cellular echo of Yuri’s memory locked his throat.

  “But…” Seo-hyun looked into his eyes. “That feeling got stronger after I met you.”

  His heart dropped.

  “It’s strange, isn’t it,” she murmured.

  “It is,” he said quietly.

  Then, slowly, he added the only truth he could give her.

  “But because of that strange connection…” His voice lowered, firm. “You have to survive.”

  Seo-hyun blinked. She could not tell if it was a confession, a vow, or a warning.

  But she heard the truth in it.

  “…I understand,” she whispered.

  Something in his chest loosened, just a little.

  The door opened softly.

  Han So-hee stepped in, finger to her lips, then came forward and held out a paper form.

  “We need her signed consent,” she whispered. “To legally verify the management logs.”

  Jin-woo looked at Seo-hyun.

  She looked from the paper to him to So-hee.

  “Is this…” she asked faintly, “because of my heart?”

  Jin-woo couldn’t answer fast enough.

  So-hee stepped in gently.

  “…Yes,” she said. “Someone tried to tamper with your medical management records. To stop it and protect you, we need to verify the logs officially.”

  Seo-hyun closed her eyes for a long moment. Then she reached for the pen.

  Her hand shook badly.

  Jin-woo moved without thinking and steadied her wrist with his hand.

  At the warmth, she inhaled sharply.

  “…I don’t know,” she whispered as she guided the pen over the line, “what exactly I’m giving permission for.”

  “You don’t need to know,” Jin-woo said.

  She looked up at him.

  “Just survive.”

  His eyes did not move.

  Seo-hyun held his gaze, then finished the signature.

  The moment she lifted the pen, So-hee took the paper and let out a trembling breath of relief.

  “Now,” So-hee whispered, gripping the form, “we can access the truth.”

  When Jin-woo stepped back into the white corridor, he met Seo-hee’s eyes immediately.

  The moment she saw him, whatever softness had surfaced earlier disappeared. The ghost was back.

  “Jin-woo,” she said. “From this second on… the real war starts.”

  He nodded once. “I know.”

  She stayed silent for a moment.

  Then, almost under the hum of the lights, she said, “I was planning to go alone again.”

  Jin-woo’s gaze locked onto hers.

  “Don’t.”

  The word landed hard.

  Seo-hee gave a broken laugh. Her eyes shone.

  “That’s why,” she said, voice shaking despite herself, “I’m standing beside you.”

  That was as close as she could come to saying let’s do this together.

  It was enough.

  Jin-woo let out a short, real laugh.

  “Good,” he said softly. “Stay beside me.”

  Ha-jun came running down the hall, face pale.

  “Hyung—it’s verified!” His voice shook. “Seo-hyun’s management termination was not a system error. Someone executed a malicious overwrite disguised as a routine update. And the signature key attached to it…”

  He bit his lip hard.

  “It matches the 2F Approval habit exactly.”

  Hyun-ah cursed under her breath. “So it all goes back to the Second Son.”

  Min-su crossed his arms. “Then that’s the truth. Locking him up didn’t end it. The automated claws he left behind are still ripping into people.”

  Jin-woo inhaled the sterile air and let it out slowly.

  “Good.”

  His voice was final.

  “Then we rip those claws out by the root.”

  He turned and looked once at Seo-hyun’s closed door.

  Behind it, she was breathing—fragile, alive, waiting.

  He made the vow again, in silence.

  I will not be late this time.

  Then he turned back to the six people standing with him, eyes burning with steady resolve.

  “The maintenance vendor,” he said. “Primary target.”

  Seo-hee gave a dark smile. “We finally found the hole where the monster hides its hand.”

  At that exact moment, Jin-woo’s burner phone vibrated again.

  [ Phantom. ]

  [ Stop practicing how to be a human being. ]

  [ The second you try to act human… another life will slip through your fingers. ]

  Jin-woo stared at the glowing screen.

  A slow smile spread across his face.

  Stop practicing how to be human?

  He answered the threat in silence.

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