Aiko started at fifteen-hundred.
She'd pushed her glasses up her nose three times in the last hour — the thin silver frames sliding down whenever she bent over the workbench.
Her dark hair was pulled back in a low ponytail.
The sharp jaw, the composed expression, the dark eyes — all of it aimed at the work like a weapon.
At forty-eight kilograms, she looked like she should be in a library, not a munitions factory.
The workshop on Level 5 was the right half of the mansion's deepest subterranean level, separated from the gymnasium by a reinforced concrete wall and a steel fire door that Aiko kept locked from the inside.
Six hundred square meters: floor-to-ceiling shelves of salvaged components, full metalworking stations, an electrical bench with oscilloscopes and circuit board printers, and a refrigerator-sized 3D printer that hummed in the corner like a sleeping animal.
The climate control maintained the room at nineteen degrees — optimized for the machines, not for comfort — and the air smelled of solder and machine oil and the faint ozone tang of electronics running at capacity.
The shelves held more than salvaged parts — prototype firearm components lined one wall in various stages of assembly, each one hand-machined, each one Aiko's design.
The workbench at the center of the room was six feet long, steel-topped, scarred with the marks of a thousand projects.
It was covered now — spools of wire, soldering iron, multimeter, circuit schematics printed on salvaged paper.
A box of C4 plastic explosive, salvaged from a Philippine National Police armory in Taguig during the compound's early supply runs — twelve kilograms, sealed in military packaging.
Chocho was curled on a shelf near the ceiling, her white fur gleaming under the LED strips, her blue eyes half-closed.
Aiko needed more than twelve kilograms.
"Mei," Aiko called, commanding.
Mei's wheelchair appeared in the workshop doorway.
She was holding her tablet, the screen displaying the compound's complete materials inventory.
Her crimson hair was tied in twin pigtails that framed her face, the color vivid against her pale skin even under the workshop's LED strips.
Her violet-blue eyes moved across the inventory data, flicking between columns at exact intervals.
The wheelchair dwarfed her.
The oversized sweater hung past her wrists, her fingers barely visible over the tablet's edge.
Behind her, in the corridor that connected the workshop to the gymnasium, Aiko could hear the distant sound of combat training — the rhythmic thump of bodies hitting mats, the sharp crack of Yue's voice calling corrections, the low hum of Soulcleaver's resonance vibrating through the concrete floor.
"We have four point three kilograms of RDX recovered from the PNP armory," Mei reported, precise.
Aiko did the math in her head.
Combined with the existing C-4 stock, she had approximately twenty kilograms of explosive material.
Not enough.
Not nearly enough.
"I need to synthesize more," Aiko stated, practical.
Mei scrolled through the inventory.
"Ammonium nitrate: eight kilograms, salvaged from an agricultural supply warehouse in Laguna. Nitromethane: one point two liters, from a hobby shop in Makati — it was used for model fuel, pre-freeze. Aluminum powder: four hundred grams, from the same hobby shop," Mei outlined, efficient.
Aiko nodded.
"How many charges are we making?" Mei pressed, curious.
"One hundred," Aiko stated, flat.
Mei looked up from her tablet.
Her violet-blue eyes were wide.
"One hundred," she repeated, stunned.
"One hundred C-4 charges," Aiko outlined, clinical. "Compact. Detonation-controlled. Each one designed for maximum structural damage at its designated placement point. The facility is approximately eight thousand square meters across six floors. One hundred charges, placed at strategic structural points — load-bearing columns, foundation joints, gas lines, HVAC main channels — will ensure complete structural collapse across all levels."
"One hundred charges," Mei repeated, quiet.
Her violet-blue eyes were fixed on Aiko, her lips slightly parted.
"Aiko, do you understand how much explosive material that requires?" Mei pressed, urgent. "Even with ANFO filling the low-priority charges and reserving the C-4 for the critical points, we're looking at—"
"I did the math already," Aiko declared, confident.
She pulled a sheet of paper from beneath the schematic — a hand-drawn table listing charge numbers, types, explosive weights, and placement coordinates. "Total explosive material required: forty-seven kilograms. Thirty-two kilograms of that will be ANFO — ammonium nitrate mixed with nitromethane as the fuel component, boosted with aluminum powder for increased brisance. The remaining fifteen kilograms will be divided between C-4 and RDX/PETN composite charges for the primary structural points."
"Forty-seven kilograms of explosive material," Mei stated, quiet.
"We have twenty kilograms in inventory. You're proposing to manufacture an additional twenty-seven kilograms of improvised explosive in the next—" She checked the timeline. "—eighteen hours."
"Yes," Aiko confirmed, flat.
"Aiko, that's not—" Mei started, alarmed.
"I've done it before," Aiko stated, flat.
"Back in Kyoto, before the exchange program. I spent two years in the civilian demolition certification track — industrial implosion, shaped charges, sequential detonation. Not because I had to. Because I wanted to." Her dark eyes flickered — her posture shifted, her shoulders squaring, something bright surfacing behind the clinical composure. "I've manufactured ANFO charges in volume for three months during a highway demolition project in Hyogo Prefecture. I can do it in eight hours if the chemical stock is available and you stay out of my way."
"I'm not going to stay out of your way. I'm going to help you," Mei declared, firm.
Aiko paused.
Looked up.
Mei's fingers were already moving across the tablet, pulling up chemical safety protocols and synthesis procedures.
Her spine had straightened in the wheelchair.
"The ammonium nitrate needs to be ground to a fine powder before mixing," Mei directed, efficient. "I can handle the milling. I'll use the workshop's ball mill — the ceramic one, not the steel one. Steel spark hazard."
"Good. And the nitromethane needs to be heated to forty degrees Celsius before it'll mix properly with the ammonium nitrate," Aiko specified, technical. "Use the portable heater from the medical bay on Level 2 — set it to low and monitor the temperature with the infrared thermometer. Nitromethane above sixty degrees becomes unstable."
"I know. I read the safety protocols," Mei confirmed, sharp.
"Then you know what happens if the mixture overheats," Aiko warned, grave.
"I know," Mei acknowledged, steady. "I also know what happens if we show up at that facility with twenty kilograms of explosive and discover we needed forty-seven. I'd rather spend eight hours making bombs than watch people die because we didn't bring enough firepower."
Aiko held her gaze for a moment.
Then she nodded.
"Ball mill is in the supply cabinet, third shelf. Ceramic milling jar is in the crate labeled 'FRAGILE — GLASSWARE.' Safety goggles are on the peg by the door," Aiko directed, curt.
"I know where the safety goggles are," Mei countered, dry.
She wheeled herself to the supply cabinet. "I've been working in this shop longer than you," Mei stated, matter-of-fact.
"You've been watching me work in this shop longer than me. Different thing," Aiko corrected, practical.
"Semantics," Mei deflected, efficient.
She pulled the ball mill from the shelf.
Her tablet pinged — a message from Jae-min on the compound's internal network, a single line of text updating the assault timeline with a revised approach vector that accounted for the new guard rotation Hua had identified.
Mei read it once.
Then she read it again, slower.
Her fingers moved across the screen, pulling up the approach map, confirming the vector, and she was nodding before she realized it.
He'd seen the pattern three minutes after Hua flagged the rotation.
Three minutes.
She'd been tracking the same data for forty minutes and hadn't seen it.
"Start on the C-4 charges. I'll have the ANFO precursor ready in two hours," Mei directed, businesslike.
They worked.
The workshop became a factory.
Aiko at the workbench, her hands moving — measuring, cutting, shaping, pressing the C-4 into compact blocks the size of a brick, each one weighing exactly three hundred grams, each one embedded with a detonator cap connected to a wired trigger circuit.
She'd designed the trigger circuits three months ago, during one of her late-night builds, and Jae-min had been the one to test the first prototype on the rooftop range.
Aiko had watched his face when he'd confirmed the circuit worked.
She'd memorized the slight nod, the quiet
"Clean. Good response time."
The memory still made something in her chest hum.
She worked in silence.
No music.
No conversation.
Charge weight, brisance index, detonation velocity, propagation delay, structural load calculations.
Her hands never stopped.
Her rhythm never broke.
Each charge was measured, pressed, sealed, and set aside in a single unbroken motion, and then the next one began, and the next, and the next — twelve hours of this, and her fingers were as steady at hour ten as they'd been at hour one.
Chocho watched from her shelf.
When Aiko's shoulders tightened or her breathing changed rhythm, Chocho would shift her weight, making a soft clicking sound in the back of her throat.
Aiko never acknowledged it.
She didn't need to.
Mei worked beside her.
The ball mill hummed in the corner, grinding ammonium nitrate to a fine powder.
The ceramic milling jar rotated slowly, the nitrate crystals breaking down under the impact of the ceramic grinding media, the powder getting finer with each passing minute.
Mei monitored the temperature, the rotation speed, the particle size — every variable controlled, every measurement recorded on her tablet in real time.
Two hours in, the workshop smelled like chemicals and solder and the faint, acrid tang of nitrates.
The air recyclers were running at maximum, pulling the volatile fumes out of the enclosed space and venting them through the mansion's exhaust system, but the smell lingered.
Through the wall, the sounds of training had shifted.
The combat drills were over — Yue's sharp corrections had faded, replaced by the lower, steadier tones of a tactical briefing.
Aiko could hear Rico's clipped military cadence through the concrete, outlining approach routes and entry points and contingency protocols.
Paolo appeared at the doorway at seventeen-thirty.
He was carrying a tray of sandwiches and two bottles of water, his round face pale above his cracked eyeglasses, his eyes carefully fixed on the sandwiches and not on the workbench where Aiko was pressing C-4 into brick-shaped molds with her bare hands.
At five-foot-one, Paolo filled the doorway in a way that would have been unthinkable three months ago — the softness at his jawline, the cheeks that had filled out week by week since Hua arrived and started feeding everyone like it was a moral obligation.
"Hua sent food," Paolo announced, hesitant. "She and Marie are running the kitchen tonight. Hua said to tell you that dinner will be at twenty-one-hundred. Something with the preserved papaya from the root cellar. She's making enough for everyone, including—"
He glanced at the charges, and his cracked eyeglasses caught the LED light as his eyes betrayed him — his gaze locking onto the charge geometry, tracing the detonator wiring, cataloging the blast radius before he could look away.
"—including people who are building weapons of mass destruction instead of coming to the kitchen like normal human beings," Paolo finished, nervous.
"Tell Hua thank you," Mei said without looking up from her tablet.
"Tell her yourself. She'll be offended if I relay gratitude secondhand," Paolo said, already backing toward the door.
"Put it on the table by the door," Aiko directed, curt.
"I wasn't planning to touch anything," Paolo explained, nervous.
"I was planning to stand here, put down the food, and leave very quickly without making any sudden movements." He set the tray down.
His eyes betrayed him — they flicked to the workbench, to the neat rows of C-4 bricks already lined up like soldiers awaiting deployment, to the ball mill grinding ammonium nitrate in the corner, to the tangle of wires and detonator caps that sprawled across the table like a metallic vine.
Behind the cracked lenses of his eyeglasses, his lips were moving — barely, silently, counting.
His fingers twitched against the tray's edge, running the numbers he couldn't stop running.
"How many is that so far?" Paolo asked, curious.
"Fourteen," Aiko reported, focused.
"Fourteen," Paolo echoed, faint.
He swallowed. "Plus the thirty-two. That's—"
"One hundred," Aiko confirmed, flat.
"Right. One hundred," Paolo echoed, faint.
He swallowed again.
"That's — okay, I know Jae-min once folded space to catch a bullet, but one hundred bombs is still one hundred bombs. That's a lot of bombs. That's a completely unreasonable number of bombs," Paolo rambled, anxious.
The words came out half-whispered, half-prayer — the voice of a man who saw numbers the way other people saw faces, and right now the numbers were beautiful and terrible at the same time.
"It's the right number," Aiko countered, clinical. "The facility has one hundred and twelve identified structural weak points. One hundred charges covers the critical nodes with a twelve-point margin of error."
She pressed another brick of C-4 into its mold, smoothed the surface with her thumb, and set it beside the others.
"Each charge is designed to propagate into the next — Aiko's Cascade, I call it," Aiko outlined, clinical. "Sequential detonation with point-three-second delay intervals. The shockwaves multiply. The structural integrity fails in order from bottom to top. The building doesn't explode outward — it implodes downward. The underground levels collapse into the foundation. The above-ground floors fold on top of them. The entire facility sinks into the ground like a—"
She paused, searching for the right simile. "—like a tooth being pulled."
"Did you just compare what you're building to dental extraction?" Paolo challenged, incredulous.
"It's an accurate structural analogy," Aiko countered, calm.
"It's a terrifying structural analogy," Paolo observed, disturbed.
"Most accurate analogies are terrifying if you think about them long enough," Aiko observed, dry.
She looked up at him.
"Paolo. Go back upstairs. Help Hua with dinner. Stop hovering in the doorway," Aiko ordered, flat.
"I'm not hovering. I'm... strategically positioned," Paolo deflected, embarrassed.
"You're hovering. The sandwiches are on the table. Leave," Aiko ordered, flat.
He left.
The workshop returned to its rhythm — the hum of the ball mill, the quiet efficiency of Aiko's hands, the tap of Mei's fingers on her tablet.
The C-4 bricks multiplied.
Fourteen became eighteen.
Eighteen became twenty-four.
At eighteen-fifteen, Hua appeared.
She smelled faintly of garlic and soy sauce — a smudge of sauce on her jaw that she hadn't noticed, her violet-blue eyes sharp despite the hour.
She was carrying a stack of printed schematics — the APB facility building plans that Mei had pulled from the Pasig City municipal database, now annotated with Hua's precise handwriting in the margins.
Structural weak points circled in red.
Guard patrol routes traced in blue.
Entry and exit vectors marked in green.
"Mei-mei, I've finished the structural analysis," Hua stated, efficient.
She spread the schematics on the empty end of the workbench, weighing down the corners with spare detonator caps.
"The facility has six load-bearing columns on each floor," Hua outlined, precise. "Columns C-3 and C-5 on Sub-Level One are the primary failure nodes — if those two go, the entire underground section loses lateral support. I've marked the optimal charge placement points for maximum cascade propagation."
She looked at Aiko.
"I don't know your detonation sequence, but if you're using sequential propagation, the order matters," Hua specified, methodical. "Bottom to top, inside to outside, with the sub-level charges firing first to remove the foundation before the above-ground charges bring the structure down."
Aiko studied the schematics.
Her dark eyes slowed on one annotation, then another, her finger tracing Hua's logic through the margins.
"You identified the HVAC main channel on the ground floor," Aiko noted, impressed.
"It runs through the central corridor," Hua outlined, tactical. "If you place a charge at the junction where the main duct splits into the sub-level branches, the shockwave will propagate through the ventilation system and reach the lower levels faster than the structural collapse. It won't bring the building down on its own, but it'll compromise the air systems and create panic. And if any of the guards try to use the ventilation shafts to escape, the charge will seal them."
"I'll add it to the placement sequence," Aiko confirmed, appreciative. "Charge seventy-three. HVAC junction, ground floor central corridor."
Hua nodded.
Her violet-blue eyes swept across the workshop — the rows of C-4 bricks, the ball mill, the chemical precursors, the tangle of wiring.
Her fingers were tapping against her thigh in a rapid, precise rhythm.
Aiko's own fingers had started tapping the same pattern on the edge of the workbench before she noticed and stopped.
"Is there anything else you need from me?" Hua asked, measured.
"Your tactical analysis of the guard rotation patterns," Aiko directed, practical. "Mei's been running the camera feeds from the Command Deck on Level 2, but she can't watch the feeds and mix ANFO at the same time."
"I'll take the surveillance watch. I can monitor the feeds from Level 2 and relay guard positions to Mei-mei in real time," Hua confirmed, decisive.
She gathered the schematics — leaving the annotated copy with Aiko — and turned to leave.
At the door, she paused.
"Aiko. The cascade you described. The four point seven seconds," Hua stated, careful. Her violet-blue eyes were steady. "That's not a lot of time."
"It's not supposed to be a lot of time," Aiko countered, flat. "It's supposed to be enough time."
Hua held her gaze for a moment.
Then she nodded — a small, precise nod — and walked out into the corridor, her footsteps disappearing toward the elevator that would take her up to the Command Deck.
— • • • —
At nineteen-hundred, Alessia appeared.
She was carrying a medical kit — a field trauma bag, pre-packed for the assault mission, containing everything she'd need to stabilize casualties in the field: tourniquets, hemostatic gauze, surgical scissors, IV lines, saline bags, epinephrine auto-injectors, and a portable defibrillator that Aiko had modified to run on salvaged battery cells.
"I need to talk to you," Alessia stated, grave.
"I'm busy," Aiko replied, curt.
"This won't take long," Alessia assured, direct.
She set the trauma bag on the table and walked to the workbench.
She stopped directly in front of Aiko, her blue eyes fixed on the engineer's face — tracking, assessing, the way a doctor reads a chart.
"I need to confirm the detonation parameters," Alessia pressed, focused. "Specifically, the minimum safe distance for personnel during the cascade sequence."
Aiko's hands paused.
She looked up at Alessia.
"The minimum safe distance is two hundred meters," Aiko specified, technical. "At that range, the blast overpressure will be below the threshold for pulmonary contusion. Closer than that, the shockwave can cause internal injuries even without direct fragmentation."
"Two hundred meters," Alessia repeated, clinical. "That's the minimum safe distance for the cascade sequence. What about the individual charges? The ones that might need to be triggered manually?"
Aiko's expression didn't change.
But her hands — still resting on the half-formed C-4 brick — went very still.
"If a manual trigger is required, the operator would need to be within ten meters of the charge to input the code," Aiko explained, measured. "The charge detonates eight seconds after the code is entered. That gives the operator eight seconds to reach minimum safe distance."
She paused. "They won't reach minimum safe distance in eight seconds."
"No," Alessia agreed, quiet.
The workshop was quiet.
The ball mill hummed.
Mei's tablet screen glowed.
Chocho's blue eyes tracked between the two women.
"Aiko," Alessia pressed, soft. "The manual trigger. If it's needed — if the remote system fails — the person who triggers it won't survive."
"I know," Aiko acknowledged, flat.
"You know, and you still volunteered," Alessia pressed, tight.
"Yes," Aiko confirmed, steady.
Alessia studied her face.
The silver-framed glasses.
The dark eyes behind them, steady.
The composed expression of a woman who weighed forty-eight kilograms and was manufacturing one hundred explosive charges for an assault on a facility full of armed guards.
"Is there any way to increase the delay?" Alessia pressed, urgent. "Twelve seconds? Fifteen? Give the operator more time to—"
"I could increase the delay to fifteen seconds. But it wouldn't matter," Aiko clarified, flat. "The cascade is timed from the first detonation. If I trigger the first charge manually, the cascade begins fifteen seconds later. If I'm still inside the building when the cascade starts—"
"You won't make it out," Alessia stated, raw.
"No," Aiko confirmed, flat.
She returned to the C-4 brick.
Her hands resumed their work — measuring, pressing, smoothing — with the same mechanical precision as before. "I won't make it out."
Alessia stood there for a long moment.
Her blue eyes were bright.
Her jaw was tight.
Her hands, resting on the edge of the workbench, had curled into fists — then uncurled, then curled again.
"Aiko," Alessia started, fragile. "Is there anything I can—"
"No. Thank you. Go prepare your medical kit. I have work to do," Aiko declined, steady.
Alessia nodded.
She turned and walked to the door, her footsteps sharp and precise on the concrete floor.
She paused at the threshold.
"If it comes to the manual trigger," Alessia began, quiet.
Aiko didn't look up.
Her hands didn't stop.
"I know," Aiko acknowledged, certain.
Alessia left.
She paused briefly by Mei's wheelchair on her way out, squeezing the smaller woman's shoulder once — a brief, firm touch that made Mei look up from her tablet.
"Don't stay up too late, Mei-mei," Alessia said, gentle.
Then she was gone, the steel fire door closing behind her with a solid clunk.
— • • • —
The workshop returned to its rhythm.
The ball mill ground.
The C-4 bricks multiplied.
Twenty-four became twenty-eight.
Twenty-eight became thirty-two.
The primary structural charges were complete — thirty-two compact blocks of military-grade plastic explosive, each one embedded with a detonator cap, each one connected to a trigger circuit, each one designed to receive a radio signal from Mei's remote detonation system or a manual code input from someone standing ten meters away with eight seconds to live.
Mei finished the ANFO precursor at twenty-one-hundred.
The ammonium nitrate powder was fine — finer than flour, the particles small enough to mix evenly with the nitromethane fuel component.
She transferred the powder to a mixing container — a salvaged stainless-steel pot that had once been used to cook pasta in the mansion's ground-floor kitchen and now served a very different purpose — and began the careful process of combining the oxidizer and the fuel.
Ammonium nitrate and nitromethane, combined in a six-to-one ratio by weight, with aluminum powder added as a sensitizer to increase the brisance — the shattering power — of the resulting explosive.
The mixing had to be done by hand, slowly, with a wooden paddle that wouldn't generate sparks.
Too fast, and the mixture could overheat.
Too slow, and the nitrate and fuel wouldn't bond properly.
Mei moved the paddle in slow, deliberate circles, her violet-blue eyes fixed on the mixture, her tablet recording the temperature every thirty seconds.
Forty-one degrees.
Forty-two.
Forty-three.
"Steady," Aiko cautioned, careful.
She was working on the ANFO molds now — larger than the C-4 bricks, each one designed to hold a kilogram of improvised explosive.
The molds were made from salvaged PVC pipe, cut to length and capped at both ends, with a pre-drilled hole in the side for the detonator insertion. "Keep it under forty-five. If the nitromethane gets too hot, the mixture becomes friction-sensitive."
"I know," Mei acknowledged, steady.
Forty-four.
Forty-four point five.
Forty-four point eight.
She pulled the paddle out.
Set it down.
The mixture was done — a grayish paste with the consistency of wet sand, smelling faintly of chemicals and something sharper, something that lived in the space between ammonia and acid.
It didn't look like much.
Aiko knew better.
Mei transferred the mixture to the PVC molds.
Aiko inserted the detonator caps.
Wires connected.
Circuits closed.
One charge done.
— • • • —
At twenty-one-thirty, the steel fire door opened and Ji-yoo walked in.
She was carrying Soulcleaver — not in its collapsed storage form, but fully extended, the eight-foot sniper-scythe resting across her shoulders like a yoke, its matte obsidian-black surface catching the LED light and swallowing it.
The violet crystalline highlights along the blade's edge pulsed faintly, the weapon's resonance humming at a frequency that Aiko could feel through the concrete floor — a low, constant vibration that was somewhere between a heartbeat and a war drum.
The Event Horizon blade was sheathed in its magnetic lock, but even sheathed, Soulcleaver's presence altered the room.
The air pressure shifted.
The LED lights flickered once.
Chocho lifted her head from the shelf and watched the weapon with the wary respect of an animal that understood, instinctively, that some things were not to be trifled with.
Aiko's hands had stopped moving.
She was staring at Soulcleaver — not at Ji-yoo, not at the weapon's wielder, but at the weapon itself.
Her dark eyes tracked the resonance patterns along the blade's crystalline edge, her fingers curling and uncurling at her sides.
Not yet.
The word surfaced the way it always did when she looked at Soulcleaver — the two syllables that sat between frustration and faith, between what she couldn't do and what she hadn't done yet.
"I'm not touching anything," Ji-yoo declared, preemptive.
She leaned Soulcleaver against the wall — carefully, the way you'd lean a sleeping tiger — and crossed her arms. "I just came down to check on the progress," Ji-yoo explained, casual. "Jae-min sent me."
"Jae-min sent you, or you wanted to see the bombs," Aiko countered, dry.
"Both," Ji-yoo admitted, blunt.
She walked along the workbench, her dark eyes moving across the rows of C-4 bricks and ANFO molds — stopping on the detonator seals, the wire gauge, the charge weight etched into each mold's casing.
"These are clean," Ji-yoo assessed, impressed. "Good cast. Consistent weight. You're using the salvaged blasting caps from the PNP stock?"
"Modified with copper wiring and micro-switches. Radio-triggered with manual backup," Aiko confirmed, technical.
"And the cascade?" Ji-yoo pressed, tactical.
"Point-three-second intervals. Bottom to top. Four point seven seconds total," Aiko specified, clinical.
Ji-yoo absorbed the number. Her expression didn't change, but her fingers tightened on her crossed arms.
"I'm on the breaching team with you and Yue," Ji-yoo stated, tactical.
"Yue blinks through first, clears the space," Ji-yoo outlined, tactical.
"I follow with Soulcleaver for heavy clearance. You handle detonation control — remote from outside if the system works, manual from inside if it doesn't." She paused. "If it comes to manual, I'm not leaving you in that building alone."
"You'll leave if I tell you to leave," Aiko countered, flat.
"No," Ji-yoo declared, absolute.
The word landed like a dropped anvil. "I'm not losing anyone in there. Not even you, short stuff. If the remote system fails and you have to trigger manually, you'll have company while you input the code. Eight seconds is enough time for two people to run. Maybe. Probably not. But I'm faster than you, and I can carry you over my shoulder if I have to."
Aiko looked at her.
Ji-yoo's dark eyes were steady — flat, certain, the same look Aiko had seen on Jae-min's face a hundred times when he'd decided something and the universe could argue if it wanted.
"The blast radius—" Aiko started, alarmed.
"I know the blast radius," Ji-yoo countered, firm.
"I also know that Soulcleaver can generate a localized gravity field strong enough to deflect overpressure by about forty percent. It won't save me from a direct hit, but it might buy enough time to get us both behind something solid." Ji-yoo's jaw was set. "We'll figure it out. That's what we do."
Aiko held her gaze.
Ji-yoo didn't blink.
"Your brother's going to have opinions about this," Aiko observed, flat.
"My brother can go fuck himself. I'm not losing anyone. That's why I don't ask his permission," Ji-yoo declared, defiant.
Ji-yoo pushed off from the workbench and retrieved Soulcleaver from the wall.
The weapon's resonance hummed louder for a moment — a brief, almost musical note that resonated in Aiko's chest — and then settled back to its resting frequency.
"Finish the charges. I'll see you at dawn," Ji-yoo stated, resolute.
She left.
The workshop door closed behind her with a solid, metallic clunk.
Aiko stared at the door for a long moment, then shook her head and returned to the workbench.
— • • • —
They worked through the night.
The compound slept around them — or tried to.
The sound of the workshop filtered through the floors: the hum of the ball mill, the scrape of the paddle against stainless steel, two engineers building charges in silence, their hands never stopping, their rhythm never breaking.
Up on Level 2, the Command Deck never slept.
Hua had taken over the surveillance watch from Mei, her violet-blue eyes moving across the twelve monitors in their semicircle, tracking guard positions, patrol patterns, structural changes.
Linda — the AI — processed the camera feeds in real time, flagging anomalies and updating the tactical overlay that Mei had designed.
The amber and blue light of the monitors painted Hua's face in shifting colors, her expression still, her fingers moving across the keyboard in a staccato rhythm that never faltered.
Elena was on Level 2 as well, standing near the back wall of the Command Deck with her black eyes closed behind her eyeglasses.
Her fingers twitched at her sides — extending, contracting, extending — as she practiced.
A corridor frozen.
A surface superheated.
Body heat read through concrete walls.
The black eyes opened.
Closed.
Opened.
Through her thermal sense, she could feel the heat signatures on the floors below — a focused burn on Level 5 where Aiko worked, a steady warmth beside it where Mei sat, and a brief, bright flare moving through the corridor.
Elena's fingers stilled.
Then, unconsciously, her right hand rose from her side, her fingertips brushing the air as though pressing ivory keys — a half-remembered chord from the Debussy she'd heard him play last week.
Her black eyes opened.
She lowered her hand.
The corridor was empty now.
He'd reached the workshop.
— • • • —
Jae-min stood in the doorway at midnight, watching, saying nothing.
His Surgeon Scalpel rifle was collapsed in its magnetic lock against his back. Beneath his jacket, the dual Glock 19s rode in their shoulder holsters, the custom grips that Aiko had machined fitting his hands like extensions of his fingers.
Aiko was on her forty-seventh charge — halfway through the ANFO composite.
Mei was mixing another batch of precursor, her face pale but focused, her movements precise despite the hours of repetitive labor.
The workshop was warm — the chemical reactions and the ball mill and the body heat of two people working at maximum output had raised the temperature to nearly thirty degrees, well above the nineteen degrees the climate control was set to — and both of them had stripped down to tank tops, their skin gleaming with sweat.
Saem pulsed in Jae-min's chest — a slow, steady rhythm, three point one seconds between beats.
The warmth spread through him, and in the cold corridor behind him, his shadow fell long and steady on the concrete floor.
"How many?" Jae-min pressed, direct.
"Forty-seven complete," Aiko reported, precise.
She didn't look up. "Also, I finished the modified trigger housing for your sidearm. The one with the reduced pull weight. It's on the second shelf, in the blue case."
Jae-min glanced at the shelf.
The blue case was there, labeled in Aiko's precise handwriting: JM — CUSTOM TRIGGER — 2.1kg PULL.
"You made this tonight? While building bombs?" Jae-min asked, incredulous.
"I made it last week. I was saving it for a good moment," Aiko deflected, quiet.
Jae-min opened the case.
The trigger assembly was beautiful — hand-machined, polished, fitted with a custom spring that would reduce the pull weight to a hair-trigger without sacrificing reliability.
Hours on a component most people never thought about.
"Aiko. This is... thank you," Jae-min said, moved.
"You're the only one here who can actually use it properly," Aiko stated, matter-of-fact. "A weapon specialist deserves specialist equipment."
Jae-min studied her face for a moment.
Aiko kept her eyes on the C-4 brick.
Her ears were slightly red.
Behind them, Mei's fingers had stopped moving on her tablet.
She was watching Jae-min — not the charges, not the schematics, not the inventory.
Her violet-blue eyes tracked the way he held the trigger housing, the slight tilt of his head as he examined the machining, and when he said "thank you" her fingers moved again.
"You need to sleep," Jae-min urged, grave.
"I'll sleep after," Aiko deflected, stubborn.
"Aiko—" Jae-min pressed, concerned.
"I'll sleep after," Aiko repeated, flat.
"I need to finish the charges, test the detonation circuits, and verify the cascade timing. That takes eight more hours. Sleep can wait."
He didn't argue.
He left.
He went to the rooftop instead, where the relay antenna was still pointing its white parabolic eye at the Pasig complex four kilometers away, and he stood in the minus seventy degree wind and stared east.
The snow canyons between buildings glowed faintly in the darkness — walls of hard-packed frozen snow dense as concrete rising ten meters on either side of the tunnel exits, their surfaces blue-white and crystalline where the cold had fused layer upon layer into something harder than stone.
The skyline beyond was a jagged silhouette of half-buried towers, only their rooftops breaking the white plain like broken teeth, their dark windows reflecting nothing.
The tunnel entrance to the east was visible from here — a rectangle of black against the white, reinforced with salvaged steel, the path the strike team would take tomorrow morning.
Four kilometers through frozen hell.
Jae-min traced the route with his eyes and counted the danger points.
Twelve.
He'd counted them before.
The number hadn't changed.
— • • • —
Down in the greenhouse on Level 3, Jennifer sat alone among the tomato vines and the basil and the papaya tree, her ice-blue eyes unfocused, her hands clasped in her lap.
She reached inward — stretching, testing, pressing against the edges of what she could perceive and what she could endure.
Jae-min, Ji-yoo, Yue — opaque walls where emotions should be.
The others came through: Hua's mind tasting of geometry and copper.
Alessia's a white-knuckle grip on calm.
Rico's a hard, steady drumbeat.
Marie's a quiet ache.
And beneath it all, from Level 5 — a cold, focused burn.
Aiko's mind.
And beside it, Mei's, precise and data-steady.
"The subjects," Jennifer thought. "The ones in the Observation Ward. The ones who are sedated. If we bring them back... I might be able to reach them. Through telepathy. I have to try."
She closed her eyes.
The papaya tree rustled in the recycled air.
The irrigation system clicked on — the six PM cycle — and water began to seep through the soil, dark and rich and alive.
Jennifer breathed.
And prepared.
— • • • —
Rico was in the gymnasium, the other half of Level 5, separated from the workshop by the fire door and the reinforced concrete wall.
He'd cleared the space after the evening briefing — the mats rolled back, the equipment pushed to the walls, the floor covered in hand-drawn schematics weighted down with spare magazines and a combat knife.
He was reviewing the assault plan for the fourteenth time, walking the approach route in his mind: two kilometers through the tunnel network, then surface at the Makati-Pasig boundary, then open snow for the final stretch.
Twelve danger points.
Sixty to eighty hostiles.
Ten assault personnel, two of them Soulbound Weapons, one of them a combat-trained colonel with thirty years of experience and a body that was thirty-seven years old again thanks to Jae-min.
He'd given orders like this before.
He'd sent people into buildings knowing some of them wouldn't come out.
His hand pressed flat against the schematic — steady, the way it always was, the way it had been for thirty years.
But his other hand, the one at his side, had curled into a fist so tight his knuckles were white.
Rico looked at the schematic.
The facility.
The laboratories.
The Observation Ward.
The detention wing.
He rolled up the schematic.
Checked his weapon.
Went to find Marie.
— • • • —
At oh-two-hundred, Mei's wheelchair was empty.
Aiko found her in the corner of the workshop, slumped against the wall, her head tilted to the side, her tablet sliding from her lap.
She'd fallen asleep mid-task — the mixing paddle still in her hand, the chemical analysis screen still glowing on her tablet, the ball mill still humming in the corner because neither of them had remembered to turn it off.
Aiko set down her tools.
Crossed the workshop.
Gently, carefully, she lifted the tablet from Mei's lap and placed it on the shelf.
Then she draped a thermal blanket over Mei's shoulders — the same blanket she used when working late in the workshop, salvaged from a frozen department store in BGC, warm enough to keep a sleeping woman comfortable in a room that was thirty degrees and getting warmer.
Chocho dropped from her shelf and padded silently to Mei's side.
The fox curled against the wheelchair's wheel, her white fur a warm contrast against the cold metal, her blue eyes watching Mei's sleeping face.
"She stayed up as long as I did," Aiko thought.
She just... stayed.
Aiko returned to the workbench.
The ball mill hummed.
The charges multiplied.
Fifty-three remaining became forty-eight.
Forty-eight became forty-two.
Forty-two became thirty-five.
At oh-three-thirty, Aiko heard footsteps in the corridor.
Light, quick, precise.
Yue appeared in the doorway.
She was dressed differently than usual — tactical gear: black cargo pants, fitted thermal undershirt, combat boots with reinforced soles.
Her black hair was pulled into a tight, high ponytail that left her neck exposed and her marble eyes unobstructed.
Her jian — the Chinese straight sword she carried — was strapped across her back, the hilt visible over her right shoulder.
Her hands were bare, her fingers extended, her stance balanced and ready.
"Jae-min told me you'd be here," Yue stated, measured.
"Ask," Aiko prompted, direct.
"The charges. The one hundred charges. How many do you need to bring down the entire facility?" Yue demanded, tactical.
"All of them," Aiko clarified, technical. "The cascade is designed as a complete system — every charge is a node in the propagation sequence. Removing any charge creates a gap in the chain that could result in partial collapse instead of total structural failure."
"How long does the cascade take, from first detonation to complete collapse?" Yue pressed, precise.
Aiko calculated.
"The full cascade — from the first charge to the final structural failure — takes approximately four point seven seconds," Aiko specified, clinical. "The initial detonation triggers a sequential chain with point-three-second intervals between each charge. The shockwaves propagate, multiply, and compound. By four point seven seconds, the entire facility has lost structural integrity."
"Four point seven seconds," Yue repeated, calculating.
She absorbed the number. "And the manual trigger?"
"Eight seconds from input to detonation. Fifteen seconds if I extend the delay," Aiko noted, technical.
"If someone is inside when the cascade starts, how long do they have to reach the exit before the building comes down?" Yue pressed, grave.
Aiko looked at her.
Yue's marble eyes were shifting — fractionally, the way they did when she was mapping spatial relationships, measuring distances that didn't exist in this room.
"It depends on where they are," Aiko assessed, careful. "Sub-Level Two — the Observation Ward — is approximately forty meters from the loading dock exit. At a sprint, that's five to six seconds. If the cascade starts while they're on Sub-Level Two, they have a chance."
She shifted her weight. "Sub-Level One — the laboratories — is closer to the loading dock, maybe twenty-five meters. Three to four seconds at a sprint. Tight, but possible. Your Blink could cover the distance in under two seconds, but only if you know the exit's there and you're not carrying anyone."
Yue absorbed this.
Her marble eyes moved — not across the workshop, but inward, mapping the facility in her mind from schematics and camera feeds.
"And if they're deeper in the facility? If they're in the laboratories when something goes wrong and they have to get to the exit before the building comes down?" Yue pressed, grave.
Aiko didn't answer immediately.
"If we trigger the cascade and someone is still in the underground levels," Aiko stated, clinical, "they won't make it out."
Yue nodded.
She didn't flinch.
"Thank you," Yue acknowledged, curt.
She turned to leave.
At the doorway, she stopped.
"Aiko," Yue called, flat.
"Yes Professor?" Aiko responded, alert.
"The charges. The one hundred charges," Yue stated, cold.
"If we can't save them — if the subjects are too far gone, if the guards are too many, if the mission fails — you detonate all of them. All one hundred. Understand?"
"I understand," Aiko confirmed, steady.
"I'm not asking you to bring the building down around our own people," Yue clarified, absolute. "I'm asking you to make sure that whoever did this can never do it again."
"The facility. The equipment. The records. The guards. Everything." Her marble eyes found Aiko's. "If we can't save them, we bury the evidence. And everyone who made it."
Aiko's hands had stopped moving.
She'd heard the shift — not in volume, not in pitch, but in something underneath both.
The voice of a woman who had taught algorithms in a university classroom and was now ordering the erasure of every living thing inside a building.
The woman who had walked into that classroom every morning and looked at her students — Aiko among them, Mei among them — and seen potential.
The same woman who was now telling Aiko to bury everyone who had put those students on tables and pumped glowing fluid into their veins.
"I understand," Aiko repeated, steady.
"All one hundred charges. Complete cascade. No survivors in the blast zone," Yue ordered, absolute.
Yue held her gaze for a moment longer.
Then she nodded, turned, and walked into the dark corridor, her combat boots silent on the concrete, her marble eyes fixed forward.
Aiko returned to the charges.
Thirty-five remaining became twenty-eight.
Twenty-eight became twenty.
Twenty became twelve.
Twelve became six.
Six became three.
Three became two.
Two became one.
The last charge was completed at oh-four-fifteen.
Aiko set it down beside the others — one hundred compact blocks of explosive, arranged in neat rows on the workbench, each one labeled with a number and a placement coordinate, each one connected to a detonator cap, each one ready to receive the radio signal that would start the cascade or the manual code that would end everything.
One hundred charges.
Enough to bring down a building the size of a city block.
Enough to bury the evidence.
Aiko sat back.
Her hands were trembling — not from cold, not from fear, but from exhaustion, the deep, bone-level fatigue of twelve hours of precision work with volatile materials.
Her fingers were stained with C-4 residue — a faint, oily sheen that smelled like plastic and chemicals and nothing good.
Her eyes burned.
Her back ached.
Her tank top was soaked with sweat.
Chocho padded across the workbench, sniffing at the charges with the careful curiosity of a fox who had learned that some things were not to be eaten.
The white fox's blue eyes met Aiko's.
She looked at the one hundred charges on the workbench.
Neat.
Organized.
Ready.
"If we can't save them, we bury the evidence," Aiko thought.
And everyone who made it.
She stood.
Walked to the corner where Mei was sleeping.
Chocho followed, curling against the wheelchair again as Aiko knelt beside her.
Gently, she touched Mei's shoulder.
"Mei. Wake up," Aiko called, gentle.
Mei's eyes opened.
She blinked.
Looked at Aiko.
Looked at the workbench.
Looked at the one hundred charges lined up in their neat, terrible rows.
"Done?" Mei whispered, exhausted.
"Done," Aiko confirmed, quiet.
Mei was quiet for a moment.
Then she reached up and squeezed Aiko's hand — brief, firm, the grip of someone who understood what had just been built and what it would be used for and what it would cost.
"Go sleep," Mei directed, firm.
"I need to verify the cascade timing—" Aiko started, stubborn.
"Go. Sleep. Two hours. I'll test the circuits and wake you if anything's wrong," Mei insisted, resolute.
Aiko wanted to argue.
She wanted to stay, to check, to verify, to make sure every connection was secure and every circuit was live and every detonator was primed.
But her body was failing her — the exhaustion was winning, the sleep debt was collecting, and the workshop was spinning very slowly around her like a lazy carousel.
"Two hours," Aiko agreed, yielding.
She lay down on the workshop floor.
Chocho immediately padded over and curled against her side, the fox's warm fur a small, steady comfort against the cold concrete.
The C-4 charges glowed faintly in the dim light — not from the explosive itself, but from the detonator indicators, small LED diodes that blinked green to confirm circuit connectivity.
One hundred green lights, blinking in unison, a constellation of destruction arranged on a steel workbench in a basement that had once stored expensive wine.
She closed her eyes.
The workshop hummed.
And four kilometers to the east, in a frozen building on the banks of the Pasig River, a machine broadcast its dying cry into the silence, and the countdown continued, and the clock was running, and one hundred charges sat on a workbench waiting for someone to carry them into the dark.