The ceiling tiles of the isolation ward had exactly four hundred and twelve fissures. Arthur knew this because he had counted them a thousand times over the last seventy-two hours. Each fissure was a distraction, a tiny anchor to reality while his body burned from the inside out.
"Heart rate is one-sixty," Ether's voice cut through the haze. It sounded bored, clinical, like she was reading the ingredients on a cereal box rather than monitoring a man whose blood was turning into liquid fire. "We should stop. The viral load has exceeded the safety parameters of Batch 4. Your organ failure is beginning to cascade."
Arthur lay strapped to the slanted medical chair, his chest heaving. Sweat pooled in the hollow of his throat. His goddesium arms, usually so responsive, felt like lead weights pinned to his shoulders, dead and heavy. The contrast between the indestructible metal and his failing, organic flesh was a cruel irony. The machine persisted; the man was dying.
"No," Arthur rasped. The word tasted like copper. He tried to lift his head, but his neck muscles refused to cooperate. "Next... injection."
Ether sighed, the sound of a stylus tapping against a tablet screen echoing in the sterile room. She walked into his line of sight, her lab coat stained with chemical reagents, her purple hair a chaotic mess. She looked down at him not with pity, but with the frustration of a mechanic looking at an engine that refused to break down properly.
"You are irrational," she stated flatly. "I have gathered enough data to refine Batch 5. Pushing further today yields diminishing returns. Why do you persist? Do you think this makes you a martyr?"
"I'm not... a martyr," Arthur managed, his voice a wet growl. A spasm of pain seized his stomach, twisting his intestines into knots. He rode the wave of agony until it subsided into a dull throb. "The Nikkes... Unit 77... you'll just put them back in the chair if I quit."
"They will end up in the chair regardless," Ether pointed out, adjusting the drip on his IV. "If not for this virus, then for the next experiment. Or they will be dismantled for parts. Or eaten by Raptures. Their existence is a cycle of utility and disposal. Your suffering changes the data, not the reality."
Arthur closed his eyes. The darkness behind his lids was spinning. "I know," he whispered.
"Then why?" Ether leaned in closer, her synthetic eyes whirring as they focused on his dilated pupils. "If you know the outcome remains the same, why volunteer for the torture?"
Arthur forced his eyes open. He looked at the scientist, seeing the cold logic that governed her world. "Because I can't look at myself in the mirror if I don't," he said. "It's not about changing the world, Ether. It's about... not hating the man I see in the reflection. It's for my own self-satisfaction."
Ether stared at him for a long, silent moment. The hum of the air scrubbers seemed to grow louder. Then, a small, genuine smirk touched her lips. It wasn't the cruel smile she usually wore.
"Self-satisfaction," she mused, testing the word. "Ego disguised as altruism. Doing the right thing simply because it pleases you to be 'good.'"
She reached for a syringe on the metal tray. The liquid inside was a vibrant, neon blue.
"That's actually... quite cool," she said softly.
She grabbed his arm, finding a vein on his shoulder that hadn't collapsed yet.
"I think a cool guy like you can handle Batch 5, then."
The needle slid in.
Arthur didn't scream this time. He didn't have the air for it. The sensation wasn't fire; it was ice. Absolute zero rushed through his veins, shattering the heat of the fever and replacing it with a bone-deep shivering that made his teeth clatter like dice in a cup.
The world dissolved into a kaleidoscope of white noise and pain.
***
The following days were a blur of biological rebellion.
Time lost its meaning. There was only the cycle of the injection, the reaction, and the recovery. Arthur coughed until his throat was raw, spitting reduced blood into a metal basin Ether held for him with detached efficiency. His joints ached with a deep, grinding pressure, as if his bones were trying to expand out of his skin.
He hallucinated. He saw Scarlet standing in the corner of the room, laughing at his weakness. He saw Snow White, her white cloak stained with oil, offering him a rat. He saw Lyra, looking at him with eyes that didn't recognize him.
"Commander?" Ether's voice would cut through the visions. "Swallow this. It stops the hemorrhaging."
He swallowed. He shivered. He endured.
By the sixth day, the pain was so constant it became a background hum, a frequency he had tuned into. He lay on the cot in the isolation room, unable to move his legs. The virus was fighting its last stand, digging its claws into his nervous system. Every nerve ending felt exposed, raw to the air.
Ether sat by his bedside, watching the monitors. She hadn't slept either. Her eyes were rimmed with dark circles, her usually pristine data-keeping devolving into scribbles on paper.
"BP is stabilizing," she muttered to herself. "T-cells are... aggressive. Fascinating."
Arthur watched her through the haze. She was a monster, he thought. A monster who sat by his bed for six days straight to make sure he didn't die.
"You're... tired," Arthur whispered.
Ether didn't look up from her notes. "I am functioning within expected parameters. Focus on breathing, Case Zero. Don't die now. It would ruin the curve."
He drifted back into the dark.
***
Day seven broke with a silence so loud it woke him up.
Arthur opened his eyes. He waited for the pain. He waited for the burning in his lungs, the twisting in his gut, the anvil-weight on his chest.
Nothing.
He took a breath. deep and clean. The air filled his lungs without resistance. He flexed his hand. The fingers moved smoothly, no tremors, no phantom aches. He sat up, the sheet falling to his waist. His goddesium arms hummed with power, reconnecting to his neural interface with a crisp, clear signal.
"You're awake."
Ether was standing by the door, leaning against the frame. She held a clipboard against her chest. She looked exhausted, her hair flatter than usual, but her expression was one of immense, professional satisfaction.
"How do you feel?" she asked.
Arthur swung his legs over the side of the bed. He stood up. His balance was perfect. "I feel... fine. Completely fine."
"As you should," Ether walked over, checking the readout on the wall monitor one last time. "The pathogen has been eradicated. Your system is clean. In fact, your immune response is now fortified. You won't be catching that particular strain again."
Arthur looked at his hands, turning them over. It was surreal. A week of hell, erasing itself in a night. "The cure worked."
"Batch 7," Ether corrected. "The previous six were... necessary stepping stones. But yes. It works."
She tapped the clipboard with her pen. "Congratulations on surviving, Commander. Most humans would have gone into cardiac arrest around Day 4. I honestly couldn't tell if you had nerves of steel or if your brain is simply too damaged to register when it should give up."
Arthur didn't smile. He looked towards the door, towards the hallway where the other rooms were. "The Nikkes. Unit 77. The others."
"Cured," Ether said simply. "Administered the final compound three hours ago. They are currently in recovery cycles, repairing the tissue damage caused by the initial infection phases. They will be returned to their squads by tomorrow morning."
Arthur let out a breath he didn't know he was holding. The tension in his shoulders finally broke. "Thank you."
Ether raised an eyebrow. "You're thanking me? I tortured you for a week."
"You kept your word," Arthur said. "You cured them."
Ether scoffed, turning away to organize a tray of vials. "Don't mistake adherence to protocol for kindness, Commander. I told you, I needed data. You provided it. They provided it. The transaction is complete."
She paused, her back to him. "You worry about them excessively. You think I enjoy breaking them?"
"I think you don't care if they break," Arthur replied.
Ether turned around, her expression unreadable. "They are staff, Arthur. Not slaves. Not pets. Staff. In this facility, everyone serves a purpose. I serve the research. You served the cure. They serve the baseline."
She walked past him, heading for the door. "I don't play God. I don't decide who lives or dies based on whim. I follow the rules of the M.M.R. If a Nikke undergoes a Mind Switch, if they lose their cognitive stability... then they are disposed of. That is the rule. But as long as they are functional? I repair them. I cure them. Because replacing trained staff is inefficient."
She stopped at the open door and gestured to the hallway. "You're discharged. Get out of my lab. I have a backlog of paperwork to file and your presence is distracting."
Arthur grabbed his coat from the chair where it had been dumped days ago. He pulled it on, the familiar weight comforting. He felt the Pilot's heat cloak bundled inside, still smelling faintly of ozone and snow.
He walked to the door, stopping beside Ether. She was smaller than him, fragile-looking despite her terrifying intellect.
"Ether," he said. "For what it's worth... you're a brilliant scientist."
Ether didn't look at him. She was staring at her tablet, but her finger hovered over the screen without tapping. "Go away, Case Zero."
Arthur stepped into the hallway. The air was still cold, still smelled of antiseptic, but it no longer smelled of fear. He began to walk toward the exit, his heavy boots clanking on the metal floor.
"Wait."
He turned. Ether hurried out of the room, closing the distance between them. She didn't look at his face. She shoved a folded piece of paper into his hand.
"Take it," she muttered.
"What is this?" Arthur asked, looking at the note.
She didn't answer. She turned on her heel and practically ran back into the lab, the heavy door hissing shut behind her and locking with a definitive *thud*.
Arthur stood alone in the corridor. He looked at the paper in his hand. It was the same stationary as the first note someone had slipped under his door—the one that had started this entire nightmare.
*PM 11. Furthest to the right. CASE01. HEL*
He reached into his pocket and pulled out that first crumbled note, smoothing it out against his prosthetic palm. He unfolded the new piece of paper Ether had just given him. The edges were jagged, as if it had been torn from a larger sheet.
He aligned the torn edges. They fit perfectly.
The text on the first note ended abruptly at 'HEL'. The text on the second note began with 'P'.
Arthur read the full message, the ink stark and neat against the white paper.
*PM 11. Furthest to the right. CASE01. HELP. No. 7, you'll be my experimental subject, won't you? You are such a righteous person.*
The air in the hallway seemed to drop ten degrees.
It hadn't been a cry for help from a captive Nikke. It hadn't been a botched message from a whistleblower.
It was an invitation.
Ether had known. She had profiled him the moment he arrived. She knew that a Commander who carried a Pilgrim's heat cloak and refused to leave his squad behind wouldn't be able to ignore a cry for help. She knew his morality was his leash, and she had yanked it.
'No. 7'.
She had designated him 'Case 7' before he had even volunteered. The 'Case Zero' moniker was just theater. She had planned to use him as the human subject from the very beginning. She guided him to that room, let him see the torture of Unit 77, and waited for his 'righteousness' to do exactly what she predicted: offer himself in their place.
A soft mechanical whir made him look up.
At the far end of the hallway, where the shadows gathered near the ventilation shafts, a figure stood watching him. It was Ether. She must have used a service shortcut to bypass him.
She stood half-shrouded in darkness, the light from a monitor reflecting off her glasses. She saw the connected notes in his hand. She saw the realization dawning on his face.
She raised a single finger to her lips.
"Shh."
The sound carried down the long, empty corridor, echoing like a ghost.
Then, she stepped back into the shadows, disappearing into the abyss of the research center, back to her necessary evils, leaving Arthur standing in the light, cured, alive, and completely played.