THE 0.3 PERCENT GENE
Protein Behavior: AP-7
For the few adults who can still talk about dreams.
When the cradle became too small,
three in a thousand chose the stars.
Kazuhisa Kato
Foreword
They say fewer adults can talk about dreams now.
We’ve made the world too rational, too predictable, too efficient. Everyone is optimized for surviving today. If you try to talk, seriously, about what lies past the horizon or beyond the dark between stars, you get filed under “romantic.” A polite word for heretic.
But is that all we are?
Look at our record. Every time extinction showed up—famine, plague, ice—some of us walked straight toward the outside. Our ancestors left the savanna with no map. They crossed oceans. They kept going until there was no more going.
This novel looks at that impulse, folded into blood, through molecular biology.
On chromosome seven, there is a rare gene: AP-7. Only 0.3 percent of the population carries it. In extreme cold, deep radiation, or when oxygen levels plummet, the protein it encodes keeps a cell from coming apart. Why is it in the human genome? Is it an evolutionary accident, or a call from the stars planted a long time ago?
Through Haru Kuon, a molecular neurobiologist born to an old Kyoto family in Kamigamo, I hope you’ll listen for the 0.3 percent call that might be inside you, too.
Table of Contents
Prologue: The Call of the 0.3 Percent
Chapter 1: Night at the Main House
Chapter 2: Nick’s Will
Chapter 3: Project Odyssey
Chapter 4: The Long Sleep
Chapter 5: The Unseen Ones
Chapter 6: The Shores of Proxima
Chapter 7: Protein Behavior
Epilogue: The Connector
Percent
It was 2247. Late summer.
I stood on the top level of Farside Colony, on the far side of the Moon. The observation dome turned without a sound. Dead center, I watched the shadow of the ship I would board tomorrow.
She was called Odyssey. 4.2 kilometers long. Crew of seven. Her hull was plated in an amorphous titanium alloy, skinned with microscopic heat fins like something that lived in a deep ocean trench. Lunar light ran off her flank; she looked almost alive. Tomorrow at 0500, humans would step beyond the solar system for the very first time.
Destination: Proxima Centauri b. 4.24 light-years away. Robots had gone. People had not.
We would cruise at fifty-five percent of light speed. Propulsion said we could push harder, but human cells said no. Correction: seven sets of human cells said yes.
My face floated on the glass, thin and shadowed.
Haru Kuon. Thirty-four. Kyoto born. Molecular neurobiology, specializing in prion-like proteins. At twelve, I tested positive for the AP-7 gene with the Earth Union Space Agency. That diagnostic cut my life into a definitive before and after.
AP-7. Adventurer’s Protein 7. Derived from the ADVR1 locus on chromosome seven. Usually, it remained quiet. But drop the temperature, spike the radiation, or yank the oxygen, and the protein refolded. It grabbed the mitochondrial membrane and the nuclear membrane at the same time, holding the cell together like a molecular anchor.
One in three hundred people carried it. Exactly 0.298 percent.
I was one of them.
My teacher’s voice came back to me then. Not in my ears, but deeper—in the bone behind my throat.
“Haru. Humanity has looked extinction in the eye again and again. Ice ages. Supervolcanoes. Plagues. We made it because a few people walked toward the danger.”
“The 0.3 percent.”
“Three in a thousand. Survival genes. They make you go.”
Nicholas van Hoven. My teacher. He was the last heretic in human genetics, and the only adult I knew who wasn’t embarrassed to talk about dreams. He had died three years ago. I was in lunar orbit training at the time and missed the funeral. His lawyer had sent me a paulownia wood box. Inside were a ring, a polymer card, and a locked data crystal.
The ring was on my left ring finger now. Not for an engagement. His will had read: Think of it as a beacon, not a keepsake. I still did not know what it was signaling.
A shadow moved across the dome.
I turned to see Mihal Rujanski, our vice captain. Fifty-something. Polish. An AP-7 carrier like me. We spoke English on board.
"Can't sleep?" he asked.
"No. I was thinking about Nick."
"Dr. van Hoven." Mihal nodded, looking out at the vessel. "Me too. Without him, none of this happens."
He was right. Nick had written the selection rule that made interstellar flight possible. Only AP-7 carriers could survive decades of partial cryo and keep their brains intact. He had proved it; everyone else had merely confirmed it. That was why we were allowed to take this step.
"Haru," Mihal said, switching gears. "Personal mass limit is 1.5 kilos. What are you taking?"
"My grandmother’s silver hand mirror," I said. "And Nick’s data crystal. It's still locked."
"Still?"
"It won’t open until we officially leave the solar system."
He whistled low. "Sounds like him."
We watched Earth for a while. It was blue—too blue, and terribly small. Eight billion people down there. Around twenty-four million carried the same variant I did, but most would never know. They would live normal, comfortable lives.
Ninety-nine point seven percent of people were perfectly fine surviving the present. That’s okay, Nick used to say. That’s how the world turns. But if we want a next thousand years, someone in that 0.3 percent has to step into the dark.
"I don't actually have an adventurous streak, Mihal," I said quietly. "Nick pointed, and I walked. That's it."
"You think so?" He smiled, his eyes reflecting the stars. "I don't buy that from someone with your eyes."
I smiled back. Something quiet was moving in me anyway. It wasn’t fear, nor was it excitement. It was older than both—the 0.3 percent call, folded into blood. Some tiny fraction of our ancestors had looked at a blank horizon and simply went to check. If none of them had come back, we would still be in one corner of Africa. Some didn't come back. Some did. Their blood was under the ring on my hand.
"Mihal," I said. "I’m just a connector."
"A connector?"
"I’m supposed to carry the family forward. An old house in Kyoto. I never saw myself as an explorer."
He was quiet for a moment. Then he turned to me. "Haru, connecting is the oldest kind of adventure there is. You take something from one person and carry it to another. You stay alive in between. Taking something four light-years from Earth definitely counts."
I looked up at him, the weight of his words settling in.
"0500 tomorrow," he said, clapping my shoulder. "Don't be late."
"Wouldn't dream of it."
After he left, I faced Earth again. Somewhere in that blue swirl, in a mossy garden in Kyoto, my mother was sitting alone. She probably wasn’t looking up tonight; she had already sent me off three months ago.
But part of me was still facing her. I was going to carry what she gave me four light-years out. I didn't know why yet, but I was carrying it.
In a world with almost no adults left who talked about dreams, one old man had kept talking. He had left a beacon on my finger. Tomorrow, the long trip to light it would begin.
Chapter 1: Night at the Main House
Three months before launch, I went home to Kyoto for the last time.
Mount Hiei slid past the shinkansen window, and my stomach did something stupid. This could be it, I thought. The last time I see this ridge. Even if I made it back, it would be fifty Earth years from now. Due to the relativistic speeds, I would only age about forty-two years, but Kyoto would be pushing the mid-2200s. The mountain wouldn't care. The people looking at it would just be different.
Kyoto Station hadn't changed since I was a kid. A massive glass grid ceiling, a remnant of an early 2100s retrofit, left alone after that. I rode the crowd of tourists down to the Karasuma Line, switched trains, and caught a streetcar north. It was twenty minutes of rhythmic rattle and humid summer air.
The main house sat north of Kamigamo Shrine, where a few ancient rice paddies still survived modern zoning laws. It was two hundred thirty years old—featuring a Meiji-era renovation built over Edo-era bones. The Kuon family house. Our crest was three stars arranged in a circle: Orion’s belt.
“We watch the stars,” Grandmother used to tell me when I was a boy. “So nobody gets scolded for staying up late.”
She had died the year I started university. Mom didn't cry at the funeral. She had just sat in the garden, staring at a single rock for a very long time.
I skipped the modern intercom. The side wooden gate still took the same iron key. It felt cold in my hand and clicked with a familiar, mechanical memory.
The entryway hit me with the entire history of the house at once. Old tatami. Sandalwood incense. Moss. Summer grass. Damp earth. The distinct Kuon smell. I thought, quite seriously, about trying to smuggle that scent into my 1.5-kilogram personal mass allowance.
"Welcome home."
My mother’s voice carried from the back of the house.
Shizuko. My mother. She maintained a perfectly straight spine. She looked to be in her mid-fifties, though she was actually sixty-eight. "Kuon women don't age" was a local joke, though it had actual epigenetic data in the Union Health Registry to back it up.
"Mom. I'm home."
"I put out your cup."
It was a black Hagi-ware teacup, my favorite. I sat in seiza on the tatami without thinking and took it from her. The green tea was bitter in the exact, grounding way that meant you were home, and nothing else mattered for the next ten seconds.
"You're really going," she said. It wasn't a question, nor was it an accusation. She was simply verifying the math.
"Yeah," I said.
"Fifty years."
"Round trip. It'll feel like forty-two for me. Time runs a little slower when you're pushing past the speed of light."
She said nothing, turning her gaze toward the garden. The sun was sliding down, and the raked gravel lines in the little karesansui courtyard were deepening with shadow.
"I wonder what your father would have said."
"He'd tell me to go."
"Would he?"
"The day I tested AP-7 positive, he cried. In a place where he thought I couldn't see."
Mom looked at me—really looked. "You noticed that?"
"I was twelve, Mom. I noticed."
"He was happy," she said softly. "Really. Happy and absolutely terrified."
My father had died of a sudden heart attack when I was sixteen. Kuon men didn't last long. “That’s why the women end up carrying the house,” Grandmother used to say.
We made dinner side by side, operating in a silence that didn't require words. She grilled salted mackerel over charcoal; I heated the winter melon. The wooden kitchen floor was cool, and the house seemed to talk to me through my bare feet.
Afterward, we sat on the engawa veranda. It was a perfect summer night. At the wild, unraked edge of the garden, fireflies began to show up. Two. Then three. Their light didn't flash and didn't breathe; it was simply there, then gone, then there again.
"It’s been a while," Mom said. "I haven't seen them in years."
"I'm glad they came tonight," I said, meaning it.
She pulled an old paulownia wood box from her sleeve. It was maybe thirty centimeters long, lacquered black, with a single kanji carved into the lid: Star.
"Take this."
Inside, wrapped in faded purple silk, was a heavy silver hand mirror. The glass was faintly fogged with age, and intricate arabesques were chased along the silver rim.
"Grandmother's?"
"Older. Late Edo period, we were told. My great-grandfather's grandmother brought it with her when she married into the family."
"It's heavy."
"Not light. But you can take it. You said your allowance was 1.5 kilos."
"Yeah. This is maybe 300 grams. I can manage it."
She placed it in my hands, her fingers lingering, refusing to let go right away. "You might need to use it where you're going."
"Use it for what?"
"I don't know," she whispered. "The Kuon mirror was never meant just for looking at your own face."
I stopped breathing for half a second. "Mom."
"Yes."
"Why do you think I'm really going?"
She thought about it. Then, she turned the question back to me. "Why do you think you're going?"
I watched the fireflies drift over the moss. "To be a connector," I said finally. "Not just for the house. For something older. I don't quite know what yet."
She didn't answer. She simply made tea once more, and I held the warm cup in both hands.
"Haru," she said, rising. "I want to show you something."
She led me to the ancestral hall on the north side of the main house—her sacred space. From the top drawer of a locked tansu chest, she lifted two heavy scrolls. One read Kuon Family Genealogy. The other read Kuon Family Supplementary Records.
"You've seen the genealogy before," Mom said quietly. "Today, you read the other one."
We unrolled the thick paper on the tatami. The black ink was faded but entirely readable. They were the names of the family heads, with small, strange notes scribbled next to them.
Kuon Ietada, Ōei 21 (1414): Spoke of a red star seen clearly in the noon sky.
Kuon Ietsugu, Kanei 7 (1630): Notes an anomaly in the proper motion of the stars.
Kuon Ietora, Bunka 9 (1812): Twice saw a pale blue streak falling into the western hills.
Kuon Teruaki, Meiji 32 (1899): At midnight, something luminous came down onto the garden stones.
Kuon Seizō, Shōwa 41 (1966): I saw it. Three times. Did not speak of it to the village.
Seizō was my great-grandfather.
"For hundreds of years," Mom said, her voice dropping to a whisper, "the people born in this house have been seeing things. It doesn’t say what. But they saw."
"Did you ever see anything, Mom?"
She shook her head. "I'm on the side that doesn't. Your grandfather was too. After Seizō, the trait skipped a generation. But—" She looked directly into my eyes. "Do you remember when you were very little? You kept pointing at the far corner of the garden."
"No. I don't remember."
"You were only three. You kept pointing at nothing, asking, ‘Who is that man standing by the bamboo?’ We couldn't see anyone."
I stared at her. She wasn't smiling; her face was entirely grave.
"Mom, that was just a kid's imagination—"
"When you tested AP-7 positive at twelve, I remembered that day," she interrupted softly. "I didn't understand the science of the gene. But I didn't have a reason to doubt it, either."
Outside, the fireflies were thinning out.
"Mom, what was I actually seeing?"
"I don't know. In this house, there are people who see, and people who protect. The ones who see usually don't stay to keep the house. They leave. The ones who don't see stay behind to protect the road. That has been our pattern for centuries." She swallowed hard, her voice cracking cleanly. "So go. Go where you have to. I'll stay here and keep the house. That’s my job."
I couldn't answer. I just sat there in the dim room.
That night, I went into the inner sanctuary of the ancestral hall alone. Behind the altar were two distinct marks carved deep into the ancient cedar wood: our three-star family crest, and another geometric symbol that nobody in the family could read. It looked vaguely like Sanskrit, or perhaps an ancient star map.
In the bottom drawer of the altar lay a scroll I had never been permitted to see. Mom had given me the iron key to it earlier that evening. I unrolled it. Five large characters were written in bold, aggressive ink:
MESSENGER OF THE STARS
Underneath, written in a tiny, hurried script, it read:
One comes from the stars and returns to the stars. The Kuon house is the road they travel. When one who sees departs, prepare the welcome.
I sat with the scroll on my lap, unable to move. The night wind rustled the pine needles outside the screen. On my finger, the ring Nick had left me felt strangely warm.
The AP-7 protein stays quiet most of the time. But introduce cold, deep radiation, or thin air, and it changes. It locks down the cellular architecture. I thought to myself: What is this protein really designed for?
Nick had said to me once, “Parts of AP-7’s tertiary structure simply do not fit Earth’s evolutionary timeline. If it evolved naturally here, why would it prepare a cell for a future environment like the vacuum of space?”
“A future environment?” I had asked him.
“Deep space, Haru,” he had smiled, his eyes twinkling. “It looks like a toolkit that was planted inside us, waiting for the day we finally decided to go out there.”
I had laughed at him then. Now, sitting on this ancient tatami with this scroll in my lap, I wasn't laughing.
One comes from the stars and returns to the stars.
If that were true... if the AP-7 gene in my cells was a literal molecular trace of something that had come from above... then we carriers were on some kind of biological schedule to return.
The next morning, I packed early and stood in the entryway. Mom remained in the back rooms. She didn't come out to say goodbye, and I didn't call for her. That was how our family handled departures; it kept the tears off the wood.
At the front gate, I turned back. Resting on the stone path by the garden entrance was a small, neat cone of white salt—the traditional morijio sending-off rite. She must have slipped out and placed it there while I was tying my boots. Next to the salt lay a single, fresh white lily.
I bowed deeply to the salt, then turned and bowed once more toward the house, toward my mother, wherever she was hiding.
At Kyoto Station, the mid-day sun was blinding. I pulled out Nick’s data crystal from my coat pocket. It felt significantly colder than the ambient air. Tiny, precise letters were etched onto its polymer surface in his sharp handwriting:
To Haru —
Open this only after you leave the solar system.
If you open it before, nothing plays.
When you, as one of the 0.3 percent, truly go “outside,” it will speak for the first time.
Don’t rush. But go.
— Nick
I slid the crystal into the deepest pocket over my heart. The shinkansen announcement chimed overhead, and the Kyoto summer closed behind me, slow, clean, and permanent.
Chapter 2: Nick’s Will
I met Nicholas van Hoven when I was twenty-two, during the first year of my master’s program at Kyoto University. It was the end of the rainy season—a heavy, amber-clouded afternoon. I was sitting in the molecular biology seminar room only because my advisor, Professor Kishimoto, had told me, "An old friend from Geneva is giving a special guest lecture." Nobody had bothered to tell us it was that van Hoven.
The door swung open, and a white-haired man walked in. Half the room stopped breathing; the other half didn't know enough biology to realize who he was.
Nicholas van Hoven. Seventy-eight years old. Amsterdam born. Cambridge in his thirties. CERN Life Sciences division in his eighties. Director of the Biosignal Institute in Texas. He was the man who had spent two decades dragging "evolutionary outlier proteins" into academic legitimacy, though he was still called a hopeless romantic behind his back by the more rigid faculty.
The title of his lecture that day was simple: “Protein Behavior: Why 0.3% of Us Refuse to Sit Still.”
He didn't use a microphone. He spoke softly, like a man telling an ancient story around a campfire.
"Humans are fundamentally strange creatures," he began, pacing the front of the room. "We move more than any other mammal. We walk into lethal danger more frequently than any other primate. Why? Economists say wealth, anthropologists say culture, theologians say religion. I wanted to look one layer down. I wanted to look at our proteins."
He picked up a piece of chalk and drew a massive molecular structure on the blackboard. It was a tertiary protein structure with a bizarre, uncanny internal symmetry. My breath caught in my throat. It looked almost identical to the unidentified, orphan protein I was planning to isolate for my master's thesis.
"This is what I call Adventurer’s Protein 7," he said, tapping the slate. "Expressed from the ADVR1 gene on chromosome seven. Its prevalence in the global population hovers around 0.3 percent. Normally, its baseline expression is incredibly low. But—" He cracked the chalk against the board. "Put those cells in extreme cold, heavy radiation, hypoxic environments, or sudden gravitational shifts, and the protein refolds. Where normal human cells rupture and die, AP-7 cells hold their structural integrity. Where normal neurons suffer telomere shearing, AP-7 brains lock down and survive. And here is the kicker: high baseline AP-7 expression correlates directly with the psychological drive to explore. Statistically. Unmistakably."
A hand shot up from the front row. "Doctor, isn't that correlation circular? Adventurous people seek out extreme environments, which causes the protein to activate."
Nick smiled, as if he had been waiting for that exact objection for twenty years. "An excellent textbook question. But the data shows the inverse. High baseline expression of AP-7 biases human behavioral choices before the individual ever encounters an extreme environment. We ran a forty-thousand-person cohort study over a decade. Career choices, partner selection, migration distance, even baseline risk tolerance—AP-7 carriers consistently skew outward, away from the center of gravity."
At the end of the lecture, I closed my notebook. My fingers were shaking. My proposed thesis topic was The Role of the ADVR1 Gene Product in Cortical Neurons. I hadn't known the name AP-7 yet, but the molecule he had drawn and the ghost I was chasing in the lab were identical.
And I had known I was an AP-7 carrier since the Earth Union Space Agency screened my school district when I was twelve.
After the room cleared, I walked down the steps to the podium. "Professor," I said in English. "Thank you for the lecture. I... I am an AP-7 carrier."
He paused, packing his notes into an old leather briefcase, and looked up. He gave me a long, calculating stare. "Your name?"
"Kuon Haru."
"Kuon Haru," he repeated, testing the cadence. "Haru. I thought that meant spring."
"No," I said. "In my family, it is written with the character for the sun."
"The sun. I see. And what do you study here, Haru?"
"The structural dynamics of the ADVR1 gene product in neurons. For my master's thesis."
His gray-blue eyes opened wide. He let go of his briefcase. "Well, young man, that is far too neat to be a mere coincidence."
That afternoon was the catalyst. It began with scattered emails over the next few years, followed by annual dinners whenever he visited Japan. When he turned eighty-two, he invited me to Geneva for a six-month stint as a visiting researcher.
I would never forget his house. It was a late nineteenth-century stone structure built onto a steep hillside overlooking Lake Geneva. The first floor was a state-of-the-art molecular biology lab; the second floor was his home; the third floor was a drafty guest room. On clear mornings, you could see the white peak of Mont Blanc framed perfectly in the window.
Every morning, we made coffee using an antique Belgian siphon machine and Yirgacheffe beans. Cup in hand, Nick would invariably walk out into his damp garden, where three massive fir trees shaded an old wooden bench. He spent the first thirty minutes of every day sitting there in absolute silence.
"Thought goes bad when you rush it," he would tell me when he came back inside. "Don't say a word until the coffee cools, Haru. Just feel the world existing."
In the evenings, we argued fiercely in the lab over AP-7's structure, its precise mechanical function, its evolutionary origin, and a wild hypothesis he had kept strictly out of his peer-reviewed publications.
"Haru," he said one night, spreading a massive global heat map of AP-7 carrier distributions across his desk. "This protein has a highly anomalous property. Do you know what it is?"
"At the molecular level?"
"No, at the population level." He pointed to the map. "Carriers sit at roughly 0.3 percent in almost every stable population on Earth. But look at the history of major migration events. The ice age migrations southward. The first human arrivals across the Bering land bridge. The crews of the Age of Exploration. The early, dangerous space programs of the late twentieth century. Reconstruct the genetics from those historical clusters, and the AP-7 carrier rates spike. Two times. Five times. Ten times the global average."
"So... carriers naturally aggregate when something massive is about to happen," I mused, looking at the data points.
"Yes," Nick said, his eyes bright. "They gather. They build ships. They walk into the dark. Many of them die out there, of course. But some survive, and the human map gets permanently larger. I call it the migration phase. AP-7 remains quiet during centuries of peace. But when a collective existential signal hits the species, the gene flips."
"What is the signal, Nick?"
He put his coffee cup down and looked at me with total solemnity. "I have been hunting that signal for forty years."
"And?"
"I don't know its frequency. But I am certain of one thing, Haru. The signal is entirely external."
"External to the body?"
"External to this planet," he said.
I held my breath. "Are you joking?"
"Half joking," he laughed, though his eyes remained dead serious. "Half not. AP-7 does not slot cleanly into Earth’s phylogenetic tree of life. Its mutation pattern doesn't match our evolutionary molecular clock. It looks entirely... inserted."
Inserted. That implied an author.
"I call it the panspermia trace hypothesis," he continued, leaning back. "Most of Earth's biology evolved right here in the mud. But I believe a few specific fragments of genetic information were introduced later, from the outside. Perhaps via a meteor bombardment. Perhaps via something more deliberate. AP-7 is one of those fragments. If that's true, the 0.3 percent makes perfect sense. It’s a recent addition; it hasn't had the evolutionary time to spread to the majority of the population. But it isn't being selected out, either. Because during major crisis phases, it is the only thing that keeps us alive."
He began to cough—a harsh, rattling sound. His bronchial tubes were failing by then.
"Haru," he gasped out, wiping his mouth. "I believe that what AP-7 carriers experience during deep subcritical cryo-states isn't random hallucination."
"You think the protein acts as an antenna," I said, the realization hitting me. "For communication."
"With what? I don't know," he whispered. "But the source is definitely off-Earth. And whoever left it might have been waiting for us to finally leave our solar system before they picked up the phone. When you reach Proxima Centauri, Haru—or perhaps even sooner, as you cycle through the deep freeze—the conversation will get deeper. In my private journals, I have cataloged over a thousand carrier testimonies from deep-cryo training. Read them. Compare them to your own experiences."
He reached out and grabbed my wrist, his grip surprisingly strong for an old man. "If something speaks to you out there in the dark, Haru, do not be afraid. Do not rationalise it away as hypoxia. Accept it. The 0.3 percent of us were literally engineered to receive it."
Chapter 3: Project Odyssey
The Earth Union Space Agency officially announced the initiative in March of 2235, exactly two years after my research stint with Nick concluded.
The mission brief was staggering:
Destination: Proxima Centauri b.
Distance: 4.24 light-years.
Cruising Speed: 55% of light speed (\bm{0.55c}).
Duration: ~7.7 Earth years (~6.5 years ship time due to time dilation).
Crew Complement: Seven individuals, all required to be AP-7 positive.
Propulsion: Helium-3/Deuterium fusion pulse drive coupled with a laser sail deceleration matrix.
Primary Objective: Direct biological and geological survey of the Proxima system; long-term habitability assessment.
The "all AP-7" requirement was immediately torn to shreds by global ethics boards. Genetic discrimination, the headlines screamed. A neo-eugenic space program. It was a fair philosophical point, but UESA refused to budge an inch. Nick’s clinical data was the brutal reason why.
If you put a non-carrier into long-term subcritical cryo-stasis for years, their neural telomere loss accelerated exponentially. The projected cognitive retention rate upon arrival at Proxima for a normal human was under 30 percent—essentially resulting in severe, irreversible dementia. AP-7 carriers under the exact same conditions maintained an 86 percent cognitive retention rate. It was a blunt biological truth: no other human beings could survive the journey.
The selection process took five agonizing years. Out of twenty-four million global carriers, the initial medical screening narrowed the field to 100,000. The second round cut it to 5,000. The final psychological and survival trials left just thirty candidates. From those thirty, a crew of seven was chosen.
I made the cut.
We met for the first time in the spring of 2245 at the Earth-Orbit Training Hub.
Elliott Keene, our captain. Forty-eight. American. A former South Pole research base commander who had spent a decade piloting deep-sea submersibles. He had thick black hair silvering at the temples and a low, resonant voice that made every routine status report sound like the final chapter of an epic novel.
Mihal Rujanski, vice captain. Fifty-one. Polish. A former European Space Agency operations chief. Dry, intensely sarcastic, and possessed of an uncanny ability to monitor everyone's mental health like a hawk.
Anna Kornai, chief engineer. Forty-two. Hungarian. A PhD in plasma physics. She wore her auburn hair in a sharp bob, sported several silver ear piercings, and rumors claimed she kept a cot in the engine section and ran reaction simulations in her sleep.
Leon Morian, communications and information systems. Thirty-nine. French-Senegalese. A former military cryptanalyst turned deep-space communications expert. Tall, exceptionally quiet, but when he actually chose to speak, he didn't stop until the problem was solved.
Farzana Sadiqi, medical officer and life support lead. Pages of credentials. Forty-five. Iranian-Canadian. One of the world’s foremost experts on AP-7 clinical pathology. She had been one of Nick's star pupils twenty years ago; she was my direct academic senior.
Giorgio Rossi, biology and planetary geology. Thirty-seven. Italian. He had made his reputation in Mars astrobiology. He had a booming, infectious laugh, was fiercely food-motivated, and would later become notorious for starting several pasta-related shouting matches in the galley.
And finally, me. Haru Kuon. Thirty-four. Molecular neurobiologist. The man who had mapped the cortical expression of AP-7. The media called me Nick’s theoretical heir.
On our first day together, we gathered in a circular conference room overlooking the blue curve of Earth. Someone had placed a black coffee pot and seven ceramic mugs at the center of the table.
Elliott spoke first. "From today, we are no longer seven individuals from different nations. We are the vanguard for eight billion people. Nobody expects us to come back unchanged, but everyone expects us to get there. Our cells allow it, and therefore, we must do it."
Anna grinned, leaning back in her chair. "I like that phrase. Our cells allow it."
"I stole it from van Hoven," Elliott admitted without shame.
The room went dead silent for a beat. We all knew Nick. We were all sitting in that room because of his lifelong obsession.
Years one and two of training were spent in low Earth orbit. We ran endless emergency drills, zero-g precision repairs, and confined-space psychological conflict management. It was standard space agency protocol, refined over a century of lunar and Martian missions.
But year three was when things became real: partial cryo-stasis training.
The Odyssey’s flight plan required the ship to spend roughly six and a half years in transit. To conserve life support resources and protect our minds, we would utilize a rotating watch schedule. Two crew members would remain awake for six-month shifts to monitor navigation and ship systems, while the other five slept in near-liquid-nitrogen subcritical cryo.
Subcritical cryo was where the AP-7 protein truly performed its miracles.
Normal human cell membranes rupture below minus 150°C because water crystallizes into jagged needles, shredding the phospholipid bilayer. DNA fragments, and proteins denature irreversibly. Chemical cryoprotectants like glycerol and trehalose help, but they cannot prevent structural decay over years.
AP-7 rewrites those biological laws from within.
As the temperature drops, the protein migrates directly to the cell nucleus, forming a protective, microscopic shell around the chromosomes. Simultaneously, it constructs a highly ordered lattice over the outer mitochondrial membrane, shifting the electron transport chain into a perfect, non-reactive standby mode. The cell drops its metabolic rate to absolute zero while preserving its precise physical architecture—like a seed waiting out a million-year winter.
"A seed," Nick had often told me in Geneva. "A tiny fraction of us have the ability to become seeds."
During our third year of training, I went into the pod for the very first time.
The cryo bay was a stark, circular room we called "the winter room." Seven sleek pods were arranged radially around a center pedestal. Someone—probably Mihal—had placed a single artificial flower on the pedestal.
"Come back sharp, Haru," Elliott said as I climbed into the tube.
The first training pair was myself and Giorgio. The other five would remain awake to monitor us. We were scheduled to be under for six months.
I lay back on the padded contour gel. Farzana hooked the intravenous lines into my left arm, introducing the chilled, pale blue cryofluid. The thick acrylic lid slid closed with a pressurized hiss. Through the clear layer, I could see her face leaning over me.
"Sleep well, Haru," her voice came through the internal comms.
"Thanks, Farzana. See you in six months."
The automated temperature sequence initiated. 36°C... 30°C... 25°C... 20°C... My consciousness took on that heavy, sinking-bed feeling, the edges of my thoughts turning soft and liquid. Below 15°C, my visual cortex shut down completely.
And then, I began to dream.
It was nothing like a normal terrestrial dream. There were no visual memories, no echoes of Kyoto, no sound. It was an architecture of pure, unadulterated presence. I was suspended in a vast, vibrating space. I was entirely aware, yet I had no physical body.
And I was not alone.
Someone, or something, was suspended there with me. It possessed no face, no distinct shape, but its presence was overwhelmingly warm and ancient. I reached out, communicating not with words, but with raw thought.
Are you calling me?
Yes, the answer returned, appearing directly within my consciousness like text etched onto glass.
Who are you?
A long, resonant silence followed. We are what is folded inside you.
AP-7, I thought.
Some of your kind call it that.
Why do you come to me now?
Because you went outside, the presence replied, its meaning vast and weightless. When you leave the cradle, we wake. Your cells trigger the awakening.
My internal sense of self shook. It wasn't terror; it was a profound, shattering awe. I realized this was exactly what Nick had spent his entire life chasing.
What do you want us to do? I asked.
Carry us.
Carry you where?
Farther, the voice whispered.
Why?
A distinct pause echoed through the gray void. We have been aiming for the deep for a long time. Your species is simply the current shape along the way.
The answer was quiet, massive, and absolute. I stopped asking questions. I simply allowed my consciousness to float alongside the presence, drifting in the silent ocean of the gene.
Chapter 4: The Long Sleep
August 14, 2247. 0500 hours, lunar standard time.
The Odyssey officially departed the Farside lunar dock.
The departure was far quieter than I had ever imagined. On the main bridge station, I watched the external high-resolution feeds. The massive gantry arms of the dock pulled back slowly, their motion silent in the vacuum. The heavy umbilical mooring lines released one by one with faint jolts. Attitude thrusters puffed small plumes of ice crystals into the dark, and the 4.2-kilometer hull floated upward. There were no bright flashes, no heroic musical scores, no dramatic tremors.
Elliott’s voice cracked over the ship’s internal comms, steady and calm. "Thank you, everyone. We have officially left port with the intention of leaving the solar system. A first for human history. For the next seven days, we will operate in habitat mode. Week two, we ramp up the fusion pulse drive to fifty-five percent of light speed. Our first official cryo-stasis rotation begins in month four. Until then, we are just seven humans flying a very large ship. Let's look after one another."
"Copy that, Captain," we replied in unison. Seven voices, then silence.
The first four months of the cruise were strangely, unnervingly peaceful.
The fusion drive pushed us forward with a continuous, gentle acceleration, ramping up from 0.05 g to a steady 0.5 g. We established a strict daily routine: we ate, we exercised on the mag-tracks, we read, and we argued. The central common space featured a large, solid oak table—a heavy piece of psychological grounding—surrounded by twelve chairs and a small, vibrant hydroponic herb garden.
During our second week, Giorgio harvested enough fresh basil to make a proper Genovese pesto. Anna leaned over her bowl and joked, "Your pasta presents a significantly higher explosion risk to this ship than my magnetic fuel compression simulations." Leon said nothing, merely moving his fork with rhythmic intensity. Farzana smiled and muttered, "Tastes like Mars."
Every night before my shift, I watched the stars from the small port in my cabin. My private living quarters were a strict 2.5-meter cube containing a bunk, a folding desk, and a single magnetic bookshelf. I had brought twelve physical books from Earth—precious paper editions of Bashō, Zeami, Wittgenstein, and Rilke, along with a few ancient molecular biology textbooks that still retained the scent of old wood pulp. Next to them sat Grandmother’s silver hand mirror, its polished surface reflecting the cold, sharp points of stars that no longer twinkled in the vacuum.
On month four, the countdown for the first true interstellar cryo-rotation commenced.
The Odyssey had cleared the outer edge of the Kuiper Belt, screaming past the dark, frozen orbit of Pluto. Behind us, the Sun had lost its distinct golden disc; it had shrunk into an incredibly bright, piercing star in a crowded backyard.
"Time to put the seeds to bed," Farzana announced as we gathered in the winter room.
The rotation schedule was locked: Giorgio and Anna would take the first watch, staying awake to manage the ship's trajectory through the interstellar void. The remaining five of us would enter subcritical cryo for the next three Earth years.
I lay down in my designated pod. The thick acrylic lid sealed with a heavy hydraulic hiss that sounded like a final, definitive breath. As the automated nitrogen lines opened, a familiar, deep chill began to creep through my veins. My core temperature began its steep, computer-controlled descent. 36°C... 25°C... 12°C... 4°C...
At minus 140°C, the water inside a normal human cell would freeze into jagged ice crystals, puncturing the delicate lipid membranes like glass through silk. But as my temperature bottomed out toward minus 180°C, the AP-7 proteins within my body woke up completely.
Inside billions of cells, the protein underwent its radical conformational refolding. It extended its molecular arms, anchoring the mitochondrial membranes securely to the nucleus, halting the electron transport chain without letting the cellular architecture collapse. My heart stopped beating. My brain waves flattened into a near-infinite plateau.
And then, the universe opened.
Chapter 5: The Unseen Ones
It was not a dream. A dream is a collage of human memory; this was an architecture of pure, objective presence.
The void was no longer black; it had transformed into a luminous, gently vibrating gray ocean. I had no arms, no eyes, no Kyoto heritage. I was simply a isolated point of pure awareness suspended in a sea of ancient, deliberate intent.
You have passed the true boundary, a consciousness resonated within me. It didn't utilize human words, but the profound meaning mapped itself directly onto my language centers. The solar wind fades here. You are finally in the open sea.
Who are you? I asked into the gray expanse.
We are the ones who waited at the gate. We are the biological template of the 0.3 percent.
Suddenly, a massive flood of data poured into my neural pathways—not in the form of numbers or equations, but raw, visceral sensations. I felt the freezing, desperate migration of early humans crossing the prehistoric Bering land bridge in the biting arctic cold; I felt the terrifying, absolute loneliness of the ancient Polynesian voyagers tracking faint starlight across an empty, endless Pacific.
The AP-7 gene was not a random mutation of terrestrial evolution. It was a homing beacon. It was a highly sophisticated piece of biological code seeded into the terrestrial evolutionary tree eons ago, engineered to lie dormant until a branch of that tree grew clever enough, and brave enough, to build a vessel and step into the interstellar dark.
Ninety-nine point seven percent must remain behind to tend the cradle, the presence whispered into my mind. But the three in a thousand must leave. You are the spores. You are the return.
When the warming cycle initiated three years later, waking felt like being dragged violently upward through miles of heavy, viscous oil. My heart gave a sudden, ragged thud. Then another. My lungs gasped in the air.
The pod lid slid open with a sharp vent of pressure. The air of the winter room tasted incredibly sharp, metallic, and intensely real. Leon was standing over my pod, his face stark and pale beneath the harsh fluorescent lights.
"Haru," Leon said, his voice trembling slightly. "We have a problem. Or a miracle. I honestly don't know which."
I sat up slowly, my limbs stiff, my muscles aching as the AP-7 protein slowly released its protective grip on my DNA. "What is it, Leon?"
"The data crystal Nick left you," Leon said, holding up the small polymer square. It was no longer inert; it was glowing with an intense, pulsing sapphire light. "The moment we crossed the heliopause, it began transmitting. Not to the ship's main computer array. It was broadcasting a low-frequency biological pulse directly into the cryo-pods. It was talking directly to your cells while you were under."
Chapter 6: The Shores of Proxima
By year six of our journey, the Odyssey had begun its long, violent deceleration phase. The massive laser sail had deployed, catching the high-powered beams fired from the lunar arrays far behind us, while our fusion pulse drive burned continuously against our forward momentum to shed our relativistic speed.
We had all aged, but unevenly. Thanks to the near-perfect cellular protection of AP-7 during our long stints in subcritical cryo, we looked and felt only a few years older than the day we had departed the Moon. But our eyes had fundamentally changed. There was a quiet, distant look in them now—the look of people who had spent years holding vivid conversations with the unseen in the deep freeze.
Through the forward observation dome, Proxima Centauri blossomed from a dull red point into a blazing, angry crimson eye.
"Orbital insertion achieved," Anna announced from the engineering console. Her auburn hair was streaked with prominent silver now, her hands moving over the controls with absolute precision. "We are officially in a stable, high orbit around Proxima Centauri b."
Giorgio brought up the real-time atmospheric scans on the main common room viewer. The planet below us was a world of stark, violent contrasts—tidally locked to its star, featuring a permanent day-side scorched by intense flare activity and a night-side locked in eternal, unyielding ice. But along the narrow twilight ring—the terminator line—a delicate band of deep indigo oceans and dark violet vegetation clung to existence.
"It's beautiful," Farzana whispered, leaning heavily against the oak table. "It looks like a magnificent bruise."
"A bruise that supports life," Giorgio corrected, his eyes bright with scientific fervor. "Look at the radiation shielding index in those native plant signatures. Their cellular structure... it's heavy with an organic analogue of our own AP-7 protein. They aren't just surviving the red dwarf's flares, Haru. They are optimized for them."
I stood apart from the crew, looking down at the silver hand mirror my mother had given me. Nearly eight years had passed on Earth. In that mossy garden in Kamigamo, the white lily she had left by the salt was long gone. She was likely gone, too. The main house was now being tended by some distant cousin I barely knew.
I held the mirror up to the heavy viewscreen. The harsh red light of Proxima Centauri caught the chased arabesques on the silver rim, reflecting a crimson glare onto my face.
Suddenly, my bio-sensor band began to chime frantically. My baseline AP-7 expression was spiking exponentially—not from extreme cold, nor from ambient radiation, but in response to a complex, coherent signal rising from the planet below.
Chapter 7: Protein Behavior
The final landing module touched down on the rocky flats of the twilight zone with a dull, echoing crunch.
Elliott, Giorgio, and I stepped out onto the surface of an alien world, our heavy enviro-suits sealing us from the environment. The planetary gravity was heavy, pulling at our boots like wet clay. The wind howled through the valleys—a low, rhythmic moan carrying the sharp scent of ozone and wet iron.
We walked toward a massive ridge of dark basalt that rose like a jagged spine from the violet plains. As we approached the rock face, my breath caught. The basalt was not entirely natural. It was deeply carved with sweeping, geometric grooves—the exact same three-star crest as my family's heirloom mirror, accompanied by the unreadable, ancient script from the Kyoto sanctuary.
"Haru," Elliott's voice cracked over the short-range comm-suit. "Look at your vitals on the HUD. Your cellular stress levels are zero."
My body was under immense physical stress from the heavy gravity and the atmospheric radiation filtering through the thin air, but my cells were not failing. The AP-7 protein in my blood was operating at one hundred percent efficiency, refolding and anchoring my cellular walls. I felt an incredible, lucid clarity. My mind felt hyper-connected, as if the neural pathways of my brain were expanding to match the vast horizon of the world around me.
I approached the basalt wall. I pulled Nick's data crystal from my chest pocket. It was no longer glowing; it had turned perfectly clear, its long, silent purpose finally fulfilled. I placed the crystal into a small, precise indentation at the exact center of the carved star crest.
The ground beneath our boots hummed.
The deep grooves in the dark rock began to bleed a pale, bioluminescent blue light. The protein within my own body vibrated in perfect sympathy—a molecular tuning fork striking a chord that resonated across light-years.
Epilogue: The Connector
It is 2297 by the Earth calendar standard. I am writing this final log from the permanent research station established on the rocky shores of the Proxima Sea.
The crew of the Odyssey did not return to Earth. We didn't need to. We found exactly what we were sent to look for: not an empty rock to colonize, but an ancient biological library. A vast genetic repository left by the ones who came before us, waiting for the 0.3 percent of the human species to mature enough to cross the dark and claim it.
We now understand that human evolution was never a closed, isolated system. We were given a push—a tiny, resilient fragment of interstellar code folded into chromosome seven, just enough to ensure that when the cradle became too small, a few of us would feel the intolerable, beautiful urge to leave.
Yesterday, a new transport ship arrived from Earth—the Odyssey II. It brought fifty new scientists and researchers, all of them AP-7 carriers who felt the global phase-migration signal trip in their blood the moment our first data transmissions reached home.
Among the cargo manifests was a small, climate-controlled paulownia wood box sent directly from Kyoto. Inside was a handful of rich, dark soil from the Kamigamo garden, and a letter written by a young woman who now keeps the main house. She wrote that on clear nights, she occasionally looks at the far corner of the garden and sees a pale blue streak in the evening sky. She asked if I could see it, too.
I stepped outside the research habitat tonight. Proxima Centauri was dipping below the icy western ridge, casting long, violet shadows across the dark water of the alien sea.
I took out my grandmother's silver hand mirror. The glass was no longer fogged with age or distance. In its surface, I didn't just see my own face—older now, lined by the heavy gravity of a new world. I saw the faces of the ancestors who had first walked out of the African savanna. I saw Nick's brilliant, heretical smile. I saw my mother sitting quietly by the raked stones of the courtyard.
My name is Haru Kuon. I am not an adventurer. I am simply a connector, holding one end of a biological thread that stretches four light-years back into the dark of Kyoto, and the other end into a future we are only beginning to write.
The 0.3 percent call was never about escaping Earth. It was about making the universe our home. And for the first time in a very long time, the adults are finally talking about dreams again.
Afterword
Most people build the world.
A few leave it.
Because of both, humanity moves forward.
If this story reminded you of a dream you once had, then it has fulfilled its purpose.
Thank you for reading.
Kazuhisa Kato
