CHAPTER ONE
ILYAN
The first thing Topper told me that morning was that I had slept badly.
"Your resting heart rate remained elevated for thirty-eight percent of your sleep cycle," he said from somewhere beneath my blankets, his little speaker giving the last few words a faint metallic crackle.
I opened one eye and stared at the ceiling while the room remained mostly dark around me. A strip of artificial dawn had begun leaking beneath the blinds, just enough to catch the edge of my desk, the school jacket hanging from my chair, and three loose circuit boards I had promised Dad I would put away before they disappeared permanently beneath everything else I owned. "Topper, why are you in my bed?" Something shifted against my shin before a small green head pushed itself from beneath the blanket.
"Temperature preference." His repaired rear leg unfolded with two tiny mechanical clicks as he climbed over my ankle and settled beside my knee. One of his glassy black eyes had a scratch running through the outer casing that made him look permanently unimpressed. "Your bed is warmer than the floor."
"You don't get cold." I sat up and rubbed both hands over my face while my hair fell forward in every direction it had apparently decided to occupy during the night.
"I possess temperature-sensitive components." Topper tipped his head slightly, the same smug little movement I had accidentally programmed into him while repairing his neck assembly. "This distinction has been explained before."
I looked at him.
He looked back.
Two years earlier I had found him beside a recycling chute on my walk home from school, missing a rear leg and repeating the same broken word through a ruined speaker.
Name?
Name?
Name?
Dad had spent the entire walk home explaining that someone had probably thrown the robot away for a reason, then spent four hours helping me rebuild it because Dad had never been very good at following his own advice. The replacement actuator never fit properly, and the speaker still crackled around certain consonants, but Topper had been following me around the apartment ever since.
"Good morning, Ilyan." His head lowered when I scratched one finger across the dented plastic between his eyes.
"Morning." I pushed the blankets away and stood, leaving Topper to hop after me with the faintly uneven rhythm of his repaired leg.
The wall display brightened at six-thirty, and Caelum began manufacturing morning outside my bedroom window.
The apartment glass cleared slowly enough that the light did not arrive all at once. Towers emerged first as dark shapes beyond the blinds, then their windows caught gold, then the suspended pedestrian bridges between them became visible through a fine mist drifting from the environmental systems. Farther away, the habitat curved upward until neighborhoods that would have been beyond the horizon on Earth instead rose gradually into the artificial sky, thousands of buildings climbing the inside of the enormous cylinder.
The blue above them was convincing if you didn't stare too long.
I always stared too long.
You could eventually find the seams where the illumination panels transitioned into transparent sections of armored glass. On especially clear mornings the distant structural ribs of Caelum showed through the manufactured atmosphere, colossal white arcs crossing behind the blue before disappearing into the opposite side of the habitat.
Dad said people stopped noticing after a few years.
I had lived here for fourteen and still noticed.
Topper followed me into the bathroom and climbed onto the closed toilet lid while I turned on the sink. "Recommended departure is in forty-one minutes." His reflection watched me from the corner of the mirror as I splashed cold water over my face.
"I know when school starts." I straightened and finally got a good look at my hair.
The red was impossible to ignore even when it behaved. This morning it had flattened on one side and curled upward on the other, bright against my brown skin beneath the white bathroom lights. I dragged wet fingers through it until it became less disastrous.
Topper's head rotated three degrees. "Your grooming attempt appears unsuccessful."
"You were found in garbage." I reached for my toothbrush and pointed it at him.
"Historical information does not alter current observation." His speaker crackled around observation.
"Keep talking and history repeats itself." I began brushing my teeth while Topper continued watching me like he expected a serious answer.
By the time I had showered and pulled on my school uniform, the apartment was fully awake even if nobody else in it was.
Climate vents shifted from night circulation to daytime flow. Kitchen lights brightened when I entered. The refrigerator display illuminated with three breakfast recommendations, a warning about our lack of fresh fruit, and an advertisement for a meal service Mom had apparently forgotten to disable.
Her chair was pushed halfway beneath the table.
Dad's mug sat beside the sink.
Neither of them was home.
A message waited on the counter display from Mom, timestamped 04:12.
Emergency editorial meeting. Food in fridge. Please eat something containing an actual nutrient. Love you.
Dad had sent one twelve minutes later.
Containment test ran long. Home tonight. Probably. Don't touch anything in the workshop marked BLUE.
I opened the refrigerator, considered the fruit for nearly two seconds, then took the leftover noodles.
Topper jumped onto the kitchen bench and watched me eat them cold. "Your mother specifically requested nutrients." His rear legs folded neatly beneath him while his charging indicator pulsed along the side of his neck.
"Noodles have nutrients." I drank orange juice directly from the bottle and put it back before he could begin whatever nutritional report was already loading behind those black eyes.
He gave a soft mechanical chirp.
Talia used to make almost the same sound.
Not literally.
She would lean against the refrigerator with both arms folded and watch me drink from the bottle until I noticed her, then take it from me and do exactly the same thing before Mom walked in and yelled at both of us.
The chair across from mine had been hers before she left.
Nobody had ever decided that. It simply became hers because she always sat there, usually with one leg tucked beneath her and something stolen off my plate. Eight months after she left for military service, nobody else used it.
Her academy mug was still in the cabinet above the sink.
The handle had cracked when she was seventeen, and Dad repaired it with enough bonding resin to make the repair uglier than the original damage. I opened the cabinet to get a glass, saw it sitting behind Mom's tea cup, then closed the door without taking anything.
"Departure is recommended in nineteen minutes." Topper's little head followed me while I carried the bowl to the sink.
"I heard you." I rinsed the bowl and left it to dry.
"You have been informed twice."
"It felt like four." I grabbed my bag from beside the door, remembered the physics workbook still open in my room, went back for it, and returned with Topper following both trips.
The door recognized my palm and released its lock with a soft click. I pulled my jacket over one shoulder while looking back into the apartment. "I'm off to school." Dad's mug remained beside the sink, Mom's chair stayed crooked beneath the table, and the ventilation system hummed through the silence.
"Goodbye, Ilyan." Topper had stopped in the middle of the kitchen, his little green body reflected faintly in the polished floor.
I kept one hand on the door for a second. "Yeah. Thanks, Topper." Then I stepped into the corridor and let it close behind me.
The residential core of Caelum smelled faintly like wet leaves in the morning.
The habitat's industrial districts always carried traces of hot metal, coolant, machine oil, and recycled air no matter how much money anyone spent on filtration. Here, city planners had apparently decided people would be happier if the ventilation system smelled like an Earth forest none of us had ever seen, so moisture and plant oils circulated through the streets each morning before commuter traffic peaked.
Actual trees grew along the pedestrian avenue outside my building.
They were taller than they had any right to be inside a space habitat, their roots disappearing into maintenance compartments beneath the pavement. Every few months environmental crews opened the panels and trimmed the roots away from power lines, water pipes, and transit controls.
People still called them natural.
I joined the flow of students, office workers, technicians, and night-shift crews moving toward the transit intersection.
The gravity under my shoes came from Caelum's rotation, though I rarely thought about it unless Dad was around. He had once made me calculate the habitat's angular velocity over dinner, then spent twenty minutes complaining that the numbers in my school textbook simplified away every interesting part of the problem.
Mom told him to stop teaching orbital mechanics over pasta.
Dad drew the equation in sauce.
I passed the café where he usually bought breakfast after overnight tests. The owner looked through the glass, recognized me, and raised two fingers.
I raised mine back.
That happened a lot.
People knew me.
Maybe not well, but enough.
Corven.
Selene Corven's kid.
Darius Corven's kid.
Talia's little brother.
The red-haired boy from gravball.
The particle-science kid.
Ilyan.
Usually somewhere near the end.
Two girls from my year caught up with me before the crossing signal. Sera Valen moved fast enough to nearly shoulder through a group of office workers, then stepped in front of me and began walking backward. "Ilyan, you ignored my message again." She held one hand against the strap of her bag while glaring at me with enough concentration that I briefly considered warning her about the man approaching behind her.
"I didn't ignore it." I shifted around her before she hit him. "I saw it and made a conscious decision not to answer."
"That is literally ignoring it." Sera turned forward and tucked a loose strand of dark hair behind one ear while her friend Leni laughed beside her.
"It feels more respectful if it's deliberate." I stepped onto the moving walkway as the intersection opened.
"You said you'd send me your containment notes." Sera matched my pace without much trouble.
"I said I might send you my containment notes." I adjusted my bag higher on my shoulder as we passed beneath a Federation recruitment display showing three cruisers cutting through a blue-white particle wake.
"You said, and I quote, 'yeah, sure.'" She used both fingers to put quotation marks around the words.
"That could mean anything."
"It means yes." Sera looked toward Leni for support and received an immediate nod.
"Where?"
"Everywhere."
Leni bumped my shoulder lightly. "You coming Friday?" She had a habit of smiling before she finished asking questions, which made it difficult to tell whether she actually cared about the answer.
"Coming where?" I asked as the school towers rose ahead of us.
Sera groaned loudly enough that two younger students looked over.
"The party." Leni waited another few steps before realizing I was serious.
"What party?" I asked.
"Joren's." She slowed.
"Who's Joren?"
Both girls stopped walking.
I made it three steps before noticing and turned around.
Sera stared at me with the expression of someone reconsidering every interaction we had ever had. "You trained with him yesterday."
"Oh." I searched through several faces. "The tall one?"
"There are three tall ones," Leni said, already laughing.
"The loud tall one." I snapped my fingers when I found him in my memory.
"That somehow makes it worse." Sera pushed through the academy gate when it recognized our uniforms.
"I might go." I followed her inside while Leni continued laughing behind us.
"You say that every time." Sera scanned into the main atrium.
"And sometimes I do."
"You came to one party last term." She turned around while still walking.
"I was there for two hours."
"You disappeared after forty minutes."
"Time moves differently when you're having fun." I smiled at her until she gave up and turned away.
Caelum Academy rose fourteen floors around a central open shaft.
Old films made Earth schools look like someone had spread buildings across huge patches of land for no reason. Caelum didn't have land to waste, so laboratories, classrooms, athletics, gardens, cafeterias, and study spaces climbed upward around the atrium beneath a section of reinforced transparent ceiling.
A model of the Solar System hung in the center.
Thousands of pieces of polished metal and light formed the planets, stations, migration corridors, and major orbital settlements. Earth and Luna moved near the lowest level. Mars circled several meters above them. Jupiter hung three stories higher, massive enough that first-year students always tried to touch it from the balcony.
Everything beyond Saturn nearly touched the roof.
Someone had apparently tried to ride the Mars sphere during graduation six years ago.
There were security fields now.
My locker opened when I approached.
Three messages waited on the embedded screen.
Two were school notices.
The third was from Talia.
CALL ME WHEN YOU'RE AWAKE, FROG OWNER. IMPORTANT.
I smiled before I could stop it.
A second message sat underneath.
Actually not important. Just bored. Still call me.
I typed back.
At school. Unlike some people, I have responsibilities.
Her response arrived before I shut the locker.
I am literally in the military.
I typed:
Exactly.
Three dots appeared, disappeared, then came back.
Mom says you're eating noodles for breakfast.
I glanced toward the hallway ceiling as though Mom might somehow have hidden a newsroom camera inside the school.
Traitor.
Talia sent me a frog icon.
I closed the locker.
First period was political history.
I spent most of it solving a particle-confinement problem beneath the desk.
Mr. Deran noticed approximately twelve minutes in and continued speaking as he walked between the rows. "The argument sounds simple when reduced to slogans because slogans are designed to make complicated things simple." He passed Naomi's desk, then mine, his eyes dropping briefly to the equations glowing on my tablet. "The Federation said central authority prevented another Destiny catastrophe. Early sovereignty movements argued that emergency authority had simply become permanent authority."
I stopped moving my stylus.
Mr. Deran tapped one finger against the edge of my desk.
I minimized the equations.
He kept walking.
"The important part of this course is not deciding which statement makes you feel better." Mr. Deran reached the front and leaned against his desk beneath a map of early post-Destiny settlement zones. "It's asking what each side believed it was protecting."
A boy two rows ahead raised his hand. "Ardent wanted independence." He answered with the confidence of somebody who had memorized the first sentence of the chapter.
"Eventually." Mr. Deran folded his arms. "Before Ardent was Ardent?"
Silence hung for several seconds while people searched their notes.
I looked through the window beside the classroom.
The industrial side of Caelum was visible beyond the neighboring towers, shipyard structures glittering in the artificial morning. Transport craft moved between them in neat lines, bright points tracing curves across the black beyond the habitat shell.
"Local authority," I said without raising my hand.
Mr. Deran looked toward me.
I tapped my stylus once against the dark tablet. "Settlement law first. Labor contracts, residency requirements, taxation, resource quotas. Independence came later when nobody could agree who had the right to decide any of that."
"Good." Mr. Deran nodded and turned toward the display. "And the Federation?"
"They thought independent settlement authority would make every future crisis harder to coordinate." I glanced toward the clock. "And they probably didn't want anyone to stop paying federal taxes."
A few people laughed.
Mr. Deran's mouth almost moved. "Your cynicism is not a substitute for analysis, Corven."
"I know." I reopened the lecture notes.
"You say that frequently." He returned to the map.
My tablet vibrated.
A private school-network message appeared.
STOP DOING PHYSICS IN HISTORY.
I looked sideways.
Sera sat three seats away.
I typed:
STOP LOOKING AT MY DESK IN HISTORY.
Her response came immediately.
SEND NOTES.
I closed the message.
History ended at nine-ten.
Applied Particle Systems began at nine-fifteen.
I was there at nine-twelve.
Dr. Neral had already opened the laboratory shutters when I arrived. The room occupied the outer edge of the academic tower, with one entire wall made from reinforced glass overlooking Caelum's industrial shell. Beyond it, the shipyards shone beneath direct sunlight, structures casting black shadows sharp enough to look painted.
Frames moved between them.
Civilian ones.
Mostly.
A construction Frame anchored itself magnetically to the hull of a cargo vessel while four manipulator arms guided a replacement radiator panel into position. It was squat, orange, and ugly, built around utility rather than anything resembling a human body.
A pale shimmer pulsed around the maneuvering pack mounted behind its shoulders.
I watched that.
Dr. Neral noticed while arranging containment modules along the front bench. "You know there's a window in your apartment, Corven." His gray sleeves had already been rolled past his elbows, exposing a scatter of old chemical marks along one forearm.
"Nothing interesting happens outside mine." I dropped my bag beside my station.
"That sounds like a problem with your neighborhood." He placed a sealed cylinder on each workstation.
Only nine students took Advanced Applied Particle Systems.
The prerequisites scared most people away.
I liked that about it.
Sera arrived thirty seconds before the bell and took the station beside mine. She saw the cylinder waiting on the table and immediately stopped unpacking. "I know that module." Her eyes narrowed at it. "Last time it screamed."
"It didn't scream." I picked mine up and rotated it between two fingers.
"It absolutely screamed." She kept her bag hanging from one shoulder as if escape remained an option.
"That was a pressure alarm."
"That is screaming with a technical name." She finally dropped the bag beneath the desk.
Dr. Neral waited until the room settled before activating the central display. A simplified circulation lattice appeared above him. "Today you're creating a stable low-output particle circulation loop inside the training chamber. Maximum permitted density is point-zero-three standard combat concentration." He allowed the sentence to sit long enough for someone near the back to whistle. "That is still enough to permanently damage your eyes if you bypass the shielding, so don't become interesting paperwork."
Sera leaned slightly toward me. "Do you think he practices saying things like that?" She watched him begin distributing access codes.
"He writes them down the night before." I opened the module interface on my tablet.
"I can hear both of you." Dr. Neral didn't turn around.
The containment schematic filled my screen.
Particle systems were beautiful when people stopped trying to make them mystical.
Every field had edges.
Every circulation loop demanded something.
Energy wanted to move. Heat wanted to spread. Particle pressure wanted to find every weakness in a containment structure and turn it into a larger weakness.
The trick was never convincing the system to ignore physics.
The trick was making physics useful.
I adjusted the first containment ring manually.
The module gave a soft tone.
Sera glanced over. "You skipped initialization." She leaned closer to my display.
"I did initialization." I reduced the return-path field before the automatic sequence could complete.
"No, you didn't."
"I did it manually."
"Why?"
"The automatic sequence is slow."
"It takes eleven seconds." She stared at me.
"That's slow."
"You're intolerable." Sera returned to her own module while mine began to glow.
Particles appeared first as a faint blue haze inside the transparent chamber. As the circulation lattice strengthened, the haze stretched into delicate overlapping rings, each one thin enough to look drawn in light.
Most students followed the standard configuration projected above Dr. Neral.
I changed mine.
He was beside my table almost immediately. "What are you doing?" His eyes stayed on the chamber as the inner ring narrowed.
"Reducing the return path." I adjusted the phase relationship by less than a degree.
"Why?"
"The standard layout wastes field strength on the outer loop." I moved another fraction of load toward the transition junctions.
Sera quietly shifted half a step away from the table.
Dr. Neral noticed that too. "So you're modifying a standardized training configuration without permission." He pulled an empty stool closer and sat beside me.
"It's inefficient." I kept my attention on the telemetry.
"That wasn't my question."
I looked at him.
He looked at me.
The module hummed quietly between us.
"Would you like me to put it back?" I asked while the first efficiency figures appeared.
"No." Dr. Neral rested both hands across one knee. "Now I want to know whether you're about to embarrass yourself."
Sera pointed toward him without looking away from her own work. "Thank you." She sounded deeply vindicated.
I ignored her.
Most basic training loops treated every section of particle circulation as though it required the same containment strength.
It didn't.
Straight circulation was easy.
Direction changes were expensive.
The field had to absorb instability where the particle stream bent, accelerated, divided, or recombined. I reduced support along the stable sections and pushed the saved power toward the transition points.
The blue rings sharpened.
Containment efficiency rose.
Eighty-one percent.
Eighty-four.
Eighty-eight.
Dr. Neral leaned closer.
Sera stopped complaining.
I adjusted the return angle again.
The chamber chirped.
Sera immediately backed away. "That sound is the reason I don't trust you." She kept one hand near the emergency cutoff on her own station.
"It means I'm close." I watched the inner loop.
"It means stop."
"That's why you got a seventy-six on your last optimization test."
"You got ninety-eight because something is wrong with you." Sera folded her arms.
I smiled.
Ninety-one percent.
The system stabilized.
For nearly three seconds, the particle loop held perfectly. Three luminous rings circulated around an empty center, the field almost silent except for the faint vibration coming through the table.
Then the outer edge trembled.
Barely.
I saw it before the warning indicator turned amber.
The returning flow shifted out of phase.
I cut the inner field.
The entire lattice collapsed into the emergency capture reservoir with a sharp blue flash that lit Sera's face.
She flinched.
Dr. Neral didn't.
He looked at the final telemetry instead.
Ninety-one-point-four percent peak.
The standard target was seventy-eight.
"Again." He turned the tablet slightly toward himself.
"You want me to repeat it?" I asked, though I was already reopening the sequence.
"I want you to tell me why it failed." He enlarged the final three seconds of telemetry.
"It didn't fail." I leaned over the display.
"The particles are currently inside the emergency reservoir." Dr. Neral pointed toward the collapsed lattice. "That usually weakens the argument."
"It completed the test."
"It completed your version of the test." He zoomed in on the oscillation spike. "What happened here?"
I studied the curve.
The change was small.
A fractional resonance shift where the return stream met the primary ring.
Heat.
Not much.
Enough.
"The field controller compensated late." I expanded the thermal graph.
"Why?"
"Because I moved too much load into the transition points." The heat peak aligned exactly with the phase drift.
Dr. Neral nodded. "So your optimization increased efficiency until the system encountered thermal variance."
"Yes." I stared at the failure point.
"And then it became unstable." He let me answer that one by looking at me.
I exhaled through my nose. "Which makes it a bad design." Sera's smile widened beside me.
"Beautiful." Dr. Neral stood and pushed the stool back. "Do it again."
The second attempt reached eighty-nine percent and stayed stable.
The third reached ninety.
The fourth stayed at eighty-eight but ran cooler than all of them.
I liked the fourth one best.
When the period ended, almost everyone left immediately for lunch.
I stayed behind.
Dr. Neral was shutting down the training modules when I approached his desk. "Can I keep the telemetry?" I held out my tablet so he could authorize the transfer.
"You already copied it." He continued packing cylinders into an insulated case.
I lowered the tablet slightly. "I did not."
He looked at me.
I looked back.
After several seconds, Dr. Neral pressed his thumb to the authorization field. The complete telemetry package transferred. "Does your father know you've started altering containment loops again?" He locked the case.
"He says the school should stop giving me equipment if they don't want me changing it."
"That sounds like Darius." Dr. Neral lifted the case onto the desk.
"You know him?"
"Everybody in high-energy engineering knows your father." He checked the seal. "Usually because he's arguing with them."
"That also sounds like him." I slipped the tablet into my bag.
Dr. Neral looked toward his desk drawer.
The pause lasted just long enough for me to notice it.
"What?" I asked while keeping one hand on the bag zipper.
He tapped the latch on the containment case with his thumb. "Nothing." The answer came too late.
"That was clearly something."
"You have athletics next." He checked the wall clock.
"I have seven minutes."
"Six, now." He opened the drawer anyway.
I didn't move.
Dr. Neral removed a thin black envelope.
Paper.
Actual paper.
That got my attention.
Nobody used paper unless they were signing something, preserving something, or trying very hard to make something feel important.
He placed it on the desk between us.
My name had been printed across the front.
ILYAN CORVEN
Beneath it sat the silver seal of the Solar Federation Directorate of Advanced Science.
I looked from the envelope to him. "What did I do?" My fingers stopped just short of picking it up.
"That response probably reveals more than you intended." Dr. Neral pushed it closer.
"What is it?" I finally took it.
"Read it." He began wiping the training table.
"That seems inefficient when you already know."
"Corven." He pointed at the envelope without looking up.
I opened it.
The first page contained enough official language that I skipped nearly half of it automatically.
Then I reached the heading.
FEDERAL YOUTH ADVANCED SYSTEMS RESIDENCY
I read the first paragraph more carefully.
Five students.
Six-week placement.
Restricted research access.
Caelum orbital construction region.
Direct study aboard an active strategic engineering platform.
My eyes moved down.
Then stopped.
HOST PLATFORM: SFCV-01 BLACK STAR
I looked toward the laboratory window.
The shipyards extended beyond Caelum in glittering layers of scaffolding, dock structures, fuel platforms, communication towers, and construction lights. Somewhere among them, almost lost against the black beyond the habitat, one vessel was larger than everything around it.
I had seen Black Star before.
Everybody in Caelum had.
It was difficult to hide something more than half a kilometer long while building it outside one of the busiest habitats in near-Earth space.
From the school tower, it looked like a dark needle surrounded by white construction lights.
"You're joking." I turned back to Dr. Neral while the paper flexed between my fingers.
"I generally use better material for jokes." He sat on the edge of his desk.
"Black Star?" I looked down again.
Dr. Neral nodded.
I read faster.
Experimental power distribution.
High-output containment systems.
Long-duration particle storage.
Advanced materials.
Deep-range drive systems.
Something about an experimental adaptive distribution architecture appeared halfway down the page, followed by three blacked-out lines.
I stopped.
"Adaptive particle distribution?" I tapped the sentence.
Dr. Neral smiled slightly. "I wondered which part would get you."
"What kind of distribution?" I turned the page, hoping the censoring somehow became less censoring on the other side.
"Classified."
"You know." I looked at him.
"I know enough to know I'm not allowed to tell you." He crossed his arms.
"Then tell me the part you are allowed to tell me." I held the letter against the desk.
"The part I'm allowed to tell you is that you'll enjoy it." His smile became more obvious.
"That's not information."
"It's all you're getting."
I read the phrase again.
Adaptive particle distribution.
That could mean dynamic containment routing.
Load-responsive field architecture.
Variable output segmentation.
Automatic transfer between propulsion, weapons, cooling, shielding, and secondary systems.
Or something completely different.
I looked through the window at Black Star again.
Until that moment, I had never particularly wanted to be inside a military ship.
That changed.
Not because it was military.
Because someone had put a particle system inside it that Dr. Neral wasn't allowed to explain to me.
"When do I have to answer?" I asked, still reading.
"You already accepted." Dr. Neral reached for another case.
My head came up. "How did I already accept?"
"Your mother signed the preliminary guardian authorization this morning." He barely managed to hide his amusement.
I stared at him.
"She said you would complain if she woke you." He closed the case.
"She was correct." I checked the authorization page.
"Your father approved it at four fifty-three."
"He was awake at four fifty-three?"
"Your father is usually awake when normal people aren't."
I looked back at the letter.
Six weeks.
I noticed the number this time.
Temporary residence aboard ship.
Security restrictions.
Research schedules.
Medical clearance.
Restricted communication windows.
Then my eyes slid back to adaptive distribution.
Dr. Neral watched me do it.
"You're going to miss athletics." He pointed toward the door.
"You still haven't told me what the system does." I folded the letter carefully along its original line and returned it to the envelope.
"You can spend the next week suffering."
"I'll find out before then." I put the envelope into my bag.
"That," Dr. Neral said while lifting the containment case, "is exactly what worries me."
I left smiling.
Coach Arven made me regret being late.
"You are twelve minutes behind everyone else." He stood near the gravball court entrance with both hands on his hips while the rotating warm-up rings moved behind him.
"I had a meeting." I pulled my training shirt from the locker and started changing before he could order me to.
"You have legs. Use them faster." Coach pointed toward the court.
"I'm using both." I shoved my school shirt into the locker.
"Corven." He didn't need to say anything else.
"I'm going." I grabbed the wall rail and pulled myself through the court entrance.
Calling it a court was generous.
The gravball chamber occupied three levels of the athletics ring, a wide cylindrical space lined with padded walls, magnetic boundaries, shifting goal assemblies, and variable-gravity plates. Thin guidance lights traced movement zones along the walls. Players could use anchor rails and launch bars to redirect themselves when gravity dropped low enough, but momentum still mattered.
That was why I liked it.
Once you committed to a vector, you owned it until something gave you another one.
My team was already losing six to two.
Joren caught the ball near the upper boundary and launched himself toward our ring just as I hooked one foot beneath the starting rail. He was tall, broad-shouldered, and loud enough that I immediately remembered him as the person whose party I had apparently agreed to attend.
"Ilyan, Blue!" he shouted while rotating midair with the ball tucked against his chest.
"I know what color I'm wearing." I waited for the release tone.
Coach Arven triggered the entry field.
Gravity dropped.
The floor stopped being useful.
I pushed from the rail.
For two seconds I moved almost entirely sideways relative to everyone else.
Joren saw me late.
He tried to change his angle.
That cost him speed.
I caught the side rail, redirected, and hit him shoulder-first just beneath the arm holding the ball. Not hard enough to hurt him. Hard enough to break possession.
The ball slipped free.
I twisted, caught it one-handed, and threw toward Sera on the opposite wall before my body finished rotating.
She caught it.
"You're still not forgiven!" she shouted while kicking away from a defender, her braid lifting behind her as the gravity field shifted.
"Send it back!" I hit the wall feet-first.
"You're not open!" She pulled the ball around another player.
"I will be." The instant my shoes touched the wall, I knew my angle was too shallow.
I corrected before pushing.
My body crossed beneath the central goal as gravity rotated twenty degrees toward the opposite wall. Everyone else reacted when the warning tone sounded.
I had already changed direction.
Sera threw.
The ball came fast enough that someone behind me yelled.
I caught it against my chest, rolled through the changing gravity, and released before my feet touched anything.
The ball passed cleanly through the moving ring.
Coach Arven blew his whistle. "Corven, stop smiling and reset." He pointed toward the starting line as the goal assembly began rotating into its next configuration.
I hadn't realized I was smiling.
I reset.
We won twenty-one to sixteen.
Afterward, Joren stood in front of the locker-room mirror fixing his hair while continuing an argument that had apparently survived the entire walk from the court. "You hit my arm before the ball." He flattened one side of his hair, examined the result, then flattened it again.
"I hit the ball." I sat on the bench with a towel around my neck while the air system blasted cold air against my damp skin.
"You hit my arm first." Joren turned toward me.
"Your arm was attached to the ball." I pulled my uniform shirt over my head.
"That isn't a defense."
"It worked." I shoved my training clothes into the locker.
He pointed at me as though he had just remembered something important. "Friday. You're coming." His finger stayed aimed at my chest.
"Maybe." I tucked the black envelope deeper into my bag while he watched me with the expression of someone who had already rejected that answer.
"That means yes."
"That's what Sera said." I zipped the bag.
"Because she understands language." Joren turned back toward the mirror.
Somebody farther down the bench threw a towel.
I ducked without looking.
It hit Joren in the back of the head.
He swore.
Everyone laughed.
I laughed too.
By the time I left the athletics wing, the hallway was crowded with people who knew my name.
Someone from chemistry asked if I had the homework answer.
A second-year waved from the stairs.
One of the gravball reserves slapped my shoulder as he passed.
I said hello to a teacher I had never actually taken a class with.
At the main transit junction, I stopped beside three other students and opened public records on Black Star while waiting for the next capsule.
Nobody came with me.
The transit doors opened.
I boarded alone.
Black Star's official engineering profile called it a deep-range strategic command carrier utilizing next-generation high-efficiency particle architecture.
That sentence told me almost nothing.
Federation engineering announcements loved phrases like next-generation. A water purifier could become next-generation if someone replaced a filter and hired a better communications team.
I opened procurement records instead.
Most were restricted.
I found an old subcontractor document that mentioned oversized variable-load regulators.
Interesting.
I searched the manufacturer.
Restricted.
I searched the patent family.
Restricted.
Much more interesting.
By the time my transit capsule reached the residential district, I had nineteen tabs open and no useful answers.
The apartment was still empty when I got home.
The lights rose automatically.
Topper came running from the hallway, his repaired rear leg making the familiar uneven click against the floor. "Hello, Ilyan." He stopped just short of my shoes and lifted his head.
"Hey, Topper." I dropped my bag beside the table and bent down to pick him up.
"You returned fourteen minutes later than projected." His legs folded automatically when I set him on the counter.
"I had practice."
"Practice was included in the projection."
"I walked slowly." I opened the refrigerator.
"Why?" Topper tilted his head.
I stood there for a second with one hand on the refrigerator door.
"Because I felt like it." I closed it again.
A new message from Mom waited on the kitchen display.
Running late. Again. I'm sorry. Dinner credit attached. Don't order fried garbage.
The attached credit could have bought an impressive amount of fried garbage.
Topper looked at the screen.
I closed it.
"I have news." I pulled the black envelope from my bag and placed it beside him.
"Would you like me to scan it?" His head moved toward the Federation seal.
"No, but you can pretend to be impressed." I tapped the envelope once. "I got into the Federal Youth Advanced Systems Residency."
Topper became still for a moment while whatever social-response library he possessed decided what to do. "Congratulations, Ilyan." The speaker crackled faintly around my name.
I leaned one hip against the counter. "That sounded almost sincere."
"My social-response library contains seventy-eight congratulatory templates." He lifted his head slightly. "This one was selected based on your heart rate."
"Don't ruin it." I picked up the envelope before he tried to analyze anything else.
"Feedback received." Topper settled back onto the counter.
My wrist display buzzed.
Talia.
Video call.
I accepted.
Her face appeared above the kitchen counter, slightly distorted at first as the connection stabilized. She was walking through a military corridor somewhere, gray bulkheads passing behind her beneath strips of cold overhead light. She had cut her hair again. The red-brown curls that used to reach her shoulders were cropped short enough now that nothing could float into her face in zero gravity.
She saw me.
Then she saw Topper.
"Frog." Talia's grin arrived immediately.
"He has a name." I shifted the display so Topper moved out of the center.
Topper leaned back into view. "Hello, Talia." His speaker gave her name an especially rough crackle.
"See? Frog likes me." Talia adjusted the strap crossing one shoulder.
"His standards are low."
"You repaired him." She turned through another corridor.
"Exactly." I leaned against the counter.
Talia laughed, then looked toward the black envelope beside me. "You got the letter." She slowed slightly.
I narrowed my eyes. "You knew?"
"Mom told me this morning." Her grin widened.
"Does everyone know my life before I do?"
"Yes. It makes surprises easier." She passed a pair of pilots wearing partial flight suits.
"You could have warned me."
"And miss your face?" Talia shook her head.
"You didn't see my face."
"I'm imagining it." She reached another junction.
"That sounds unhealthy."
One of the pilots behind her called something I couldn't hear and slapped her shoulder as he passed. Talia shoved him hard enough to send him stumbling sideways without breaking stride.
"So, Black Star." She looked back at me. "That's not terrible."
"Not terrible?" I picked up the envelope.
"I've seen it." Talia sounded deliberately casual.
I straightened before I could stop myself. "You have?"
"From about forty kilometers away." She shrugged. "It's a ship."
"It has an adaptive particle-distribution system." I tapped the censored line on the letter even though she couldn't read it from there.
Her expression went completely blank.
I waited.
She waited.
"That sounded exciting in your head, didn't it?" she finally asked.
"It is exciting."
"It distributes particles."
"Adaptively." I emphasized the word.
"That really clears it up." Talia resumed walking.
"You fly a Frame for a living."
"Exactly." She lifted one hand as if demonstrating something profound. "I press the controls. Machine goes where I want. Very sophisticated."
"That explains your test scores."
Her eyes narrowed. "You know I can still come home and hit you." She stopped beside a bulkhead.
"You'd need leave approved."
"I'll file it as training."
I smiled.
Talia looked at me for another moment before glancing at the envelope again. "When do you leave?" Her voice had lost some of the teasing.
"Next week."
"For how long?"
"Six weeks." I folded the envelope closed.
She gave a low whistle. "That's not nothing." One arm folded beneath the other.
"No." I turned the envelope over.
"You staying aboard?"
"Looks like it."
"Actual shipboard housing?" Talia shifted her weight against the bulkhead.
"Yes."
"That part will get old fast."
"I've lived inside a habitat my entire life."
"A habitat has restaurants." She pushed away from the wall as someone opened a hatch nearby.
"Ships have food."
"Military ships have crimes against food." Talia lowered the display slightly while entering the next corridor. "And officers."
"I've survived Mom."
"That is completely different."
"Is it?" I asked.
"Yes. Officers can punish you." Her mouth twitched.
I laughed.
A hangar entrance appeared behind her.
Through the open hatch, something white filled most of the distant background.
A Frame.
Only one leg was fully visible, locked upright in a maintenance cradle while technicians moved around the ankle on elevated platforms. White Federation armor covered a dark internal skeleton. A service panel had been removed from the lower torso, exposing a faint blue shimmer around the particle distribution assembly.
Talia saw where I was looking.
"You finally interested?" She rotated the display enough to show me more of the machine.
I leaned closer.
Not toward the Frame.
Toward the exposed system.
"What output regulator is that?" I asked while trying to make out the geometry around the conduit housing.
Talia immediately turned the display back toward herself. "I knew that would ruin it." She started walking again.
"Turn it back."
"You had your chance."
"Talia." I moved closer to the projection as though that could somehow improve the angle.
She laughed.
Someone called her name from farther down the corridor.
Talia turned her head.
"I have to go." Her pace increased.
"Already?" I asked while she passed another hatch.
"Some of us have responsibilities."
"You stole my line."
"I improved it." She stopped abruptly near another door and looked directly at the camera. "Hey, Ilyan. Black Star's still military." Her fingers tightened slightly around the edge of the display. "Don't wander anywhere you aren't supposed to."
"I never do that." I kept my face still for maybe half a second.
Talia stared at me.
I failed.
"Ilyan." She said my name the way Mom did when she had already found evidence.
"I'll be careful." I rested both elbows against the counter.
"That isn't what I said."
"It's what you meant."
Her mouth moved like she wanted to argue, but somebody called her again, louder this time. "Fine. Call me before you leave." She glanced away and then back.
"I will."
"And send me pictures if security lets you." She resumed walking.
"I'll send you the particle architecture."
"You send me one picture of a pipe and I'm blocking you." Talia smiled, smaller this time. "Love you."
"Love you too." I watched her disappear when the connection ended.
The projection vanished.
Topper was still sitting beside me.
"Talia's heart rate appeared elevated." His head tipped toward the empty space where the call had been.
"You can't read her heart rate through video." I picked him up.
"Correct." Topper's legs folded against his body.
"Then why did you say that?"
"I was experimenting with humor."
I moved him to the other side of the counter. "Stop experimenting."
"Feedback received."
Dad came home at twenty-three seventeen.
I was still at the kitchen table.
Three technical databases floated above the surface in front of me while Black Star procurement records occupied most of the central display. I had found six regulator contracts, four industrial cooling patents, and one suspiciously vague mention of adaptive distribution hardware that disappeared the moment I tried following its documentation chain.
The front door opened.
Dad walked in carrying his work case in one hand and his jacket over the opposite shoulder. His dark work shirt had a faded containment-company insignia across the chest, and something silver had dried along one sleeve. He looked like somebody had removed him from a machine halfway through repairing it.
He saw me.
Then the displays.
Then the black envelope.
"So." He set the work case beside the door and kicked his shoes beneath the bench.
"You knew." I minimized one database.
"I knew." Dad walked straight to the refrigerator.
"Everyone knew."
"Topper?"
"I told him."
"Then yes, everyone." He opened the refrigerator and stared inside for several seconds. "Where's the orange juice?"
"There." I pointed without turning.
Dad reached behind the milk.
Nothing.
He looked at me.
I looked back.
"You drank it." He closed the refrigerator.
"Possibly." I enlarged one of the procurement diagrams.
"You drank it from the bottle." He opened a cabinet and took a glass.
"No evidence."
"Your mother sent me the kitchen log." Dad filled the glass with water.
I looked toward the ceiling sensor. "Why does everyone spy on me?"
"Because you're interesting." He drank half the water before sitting.
I turned one of the diagrams toward him. "Do you know what this is?" The projected regulator rotated slowly above the table between us.
Dad glanced at it for less than a second. "No idea." He took another drink.
"You answered too fast." I enlarged the manufacturer markings.
"I'm tired."
"You know what it is."
"I know what a regulator is." Dad kept his eyes on the water.
"This regulator." I turned the diagram farther toward him.
"It remains a regulator."
"Dad." I leaned forward.
His mouth moved slightly.
"That smile means you know." I pointed at him.
"That smile means I enjoy watching you suffer." Dad finished the water.
"You're a terrible father."
"I'm devastated." He set the glass down.
I looked at his hand.
A thin burn mark ran along two fingers.
It hadn't been there yesterday.
Dad noticed where I was looking and rotated his hand beneath the table. "Nothing interesting happened."
"That means something interesting happened." I tried to catch another look.
"It means safety systems functioned as designed."
"That sounds worse."
"It was loud." He flexed his fingers once and then rested them against his knee.
I returned to the diagram. "Adaptive particle distribution."
Dad leaned back in the chair. "Absolutely not."
"You didn't even let me ask."
"I know what the question is."
"Then answer the general version."
"No."
"You know." I pointed toward him again.
"I know enough things that eventually you'll be right by accident."
"You signed the paperwork."
"That gives you permission to attend the program." Dad reached across the table and minimized one of my eighteen open windows. "It does not give me permission to discuss classified engineering."
"You could explain the architecture without giving me restricted specifications." I reopened the window.
"You already understand the general architecture."
"Then explain the specific architecture."
Dad smiled again.
I hated that smile.
"You know." I sat back.
"I know you need sleep." He stood.
"It's eleven-thirty."
"You have school."
"So did you when you were my age."
"I made poor choices." Dad collected his empty glass.
"Apparently." I closed the regulator diagram.
He took two steps toward the hallway before looking back at the black envelope. "Congratulations, by the way." His voice came quieter than everything before it. "You earned it."
I looked down at the Federation seal.
He didn't add anything.
I picked at the corner of the envelope. "Dr. Neral said the first review was anonymous."
"It was." Dad leaned one shoulder against the doorway.
"You didn't recommend me?"
"No." The answer came immediately.
I looked at him.
Dad's mouth twitched. "You wanted me to?"
"No." I folded the envelope once.
"Good."
"Maybe."
He laughed.
I kicked the side of his shoe beneath the table when he came closer again.
Dad kicked mine back.
"Your work got noticed." He tapped one finger against the envelope. "That's good."
"What if they noticed it because of you?"
"Then you should stop being better at containment optimization than half my interns." Dad picked up one of my abandoned technical diagrams. "It makes nepotism harder to prove."
I laughed and took the display away from him.
Then I opened the public rendering of Black Star.
The carrier appeared above the table.
Even as a projection, it made the kitchen feel smaller.
Six hundred twenty meters of armored spine and deep-range machinery rotated slowly between us. The Federation rendering showed a cleaner version than the actual ship under construction: long central hull, buried carrier bays, clustered engines, four folded radiator vanes, white identification markings across nearly black armor.
"Why does a command carrier need this much independent infrastructure?" I asked while expanding the internal overview. "Thirty-six Frame capacity. Particle storage. Refinement. Fabrication. Medical center. Long-range maintenance. That's more than a command platform."
"Because it's supposed to operate far from support." Dad's eyes moved across the projection.
"For how long?" I rotated the ship.
"Public specifications say—"
"I read those." I enlarged the drive section.
"That was your mistake." Dad rubbed his thumb across the new burn on his fingers.
"How long?" I asked again.
He looked at me.
I knew the answer before he said anything.
"Ilyan." Dad didn't raise his voice.
That tone meant the conversation had reached classified territory and was not coming back.
I let the display shrink slightly. "Fine." The Black Star continued rotating between us.
Dad turned toward the hallway.
"Is it good?" I asked before he disappeared.
He stopped.
"The ship?" Dad looked back toward the projection.
I nodded.
For once he didn't answer immediately.
Black Star's dark hull rotated across his face in reflected light.
"It's ambitious." He watched it complete another slow turn. "Sometimes that's the same thing."
Then he went to shower.
I stayed at the table.
Topper entered the kitchen several minutes later, moving quietly enough that I didn't notice until he climbed onto the chair beside me. "Your recommended sleep period began thirty-six minutes ago." He settled with his front feet against the table edge.
"I know." I reduced the Black Star projection until it fit between us.
"You have stated that several times today."
"Because you keep telling me things I know." I rotated the ship once more.
"Would you prefer information you do not know?" Topper's eyes brightened faintly.
I looked at Black Star.
"Yes."
He processed for a moment. "Tomorrow's lunch menu includes tomato soup." His speaker crackled softly on soup.
I stared at him.
"That technically qualifies." I shut down the projection.
"Thank you." Topper climbed into my arms when I picked him up.
The kitchen suddenly felt smaller without the ship floating above it.
I carried Topper toward my room while the apartment dimmed into night cycle. Dad's work case remained beside the front door. His shoes were crooked beneath the bench. Somewhere behind the wall, water moved through the plumbing as the shower ran.
For the first time in months, someone else was home.
I put Topper on my desk.
He immediately jumped onto my bed.
"You have a charger." I pointed toward the little dock against the wall.
"My charger is cooler than your bed." Topper began turning in a circle on the blanket.
"You don't get cold."
"I possess temperature-sensitive components." He settled near the foot of the mattress.
"You've used that already."
"It remains accurate."
I pulled the blanket over him anyway.
Topper disappeared beneath it except for the ridge of his little mechanical back.
The room went dark.
Outside, Caelum continued rotating through space.
I could picture Black Star beyond the habitat shell if I tried.
Not its guns.
Not its armor.
I imagined the particle lines.
Containment channels threading through hundreds of meters of ship. Reserve chambers holding enough particle mass and stored energy to push something that enormous through the dark. Distribution systems deciding, every fraction of a second, whether output went toward propulsion, cooling, fabrication, sensors, weapon systems, or whatever experimental architecture the Federation had buried behind black censor bars.
Adaptive distribution.
I wanted to see it.
I wanted to know how they had solved the problem.
I wanted to find the parts they hadn't.
Topper shifted beneath the blanket. "Your heart rate has increased." His voice came muffled through the fabric.
"Pretend to sleep." I closed my eyes.
"I do not sleep."
"Then pretend better." I pulled the pillow beneath my head.
Topper became quiet.
Six weeks aboard Black Star.
That was all it was then.
A school program.
A ship.
A particle system I wanted to understand.
Somewhere outside Caelum, Black Star waited beneath construction lights while people I had never met were already moving toward it.
I went to sleep thinking about how its particle system worked.
I didn't know anyone was coming to steal it.