Chapter Text
Prologue - The Weight of a Hundred Years
"They say there is a bird called Jian —
a creature born with only one wing.
It cannot fly alone.
It cannot even exist alone.
It needs another. Always another.
Some call that weakness.
I call it the most honest form of love."
— ancient manuscript, author unknown
I — on the hunger of the world
Humanity always wanted more.
That is not a criticism. It is a statement of fact. Wanting more is what drove us out of caves. What made us cross oceans. What made us look at the sky and decide it belonged to us too.
And wanting more always demanded more energy.
Coal came first. Then oil, gas. Then hydroelectric dams, wind turbines, solar panels, nuclear reactors. Each solution carried within it a new appetite. Demand never stopped growing. Humanity never stopped searching.
Until, in the year 2058, we found the magma.
· · ·
II — the discovery
Not merely heat. Pure energy. Inexhaustible. More powerful than anything we had ever touched. Renewable — the scientists said, with smiles that never reached their eyes. And luxurious, just as the upper class of the new society preferred.
The world trembled with excitement. Celebrated. Built.
We drilled into the earth's mantle as though it were ours by right. As though the planet were simply a vault waiting to be opened, and we its rightful owners.
Nobody asked what lived inside.
· · ·
III — the consequences
The planet responded slowly. As only the great ones do.
For decades, the relentless extraction altered the heat flows deep within the earth. The planet's average temperature began to fall — fractions of a degree each year. Insignificant, they said. Controllable, they said.
It was not.
The poles advanced in silence. The seasons dissolved. The fauna and flora that had survived mass extinctions, ice ages, and meteors — did not survive us.
And then, around 2080, something else began to stir.
The creatures of the earth's mantle had slept for ages. The magma's warmth was their shelter, the rhythm of their deep slumber. When we began to cool what was theirs, they woke. Hungry. Instinct-driven. With a force no human army had ever been built to face.
We called them Magmasaurs. Some emerged like living mountains — skin hard as basalt, slow, unstoppable, capable of leveling cities under the sheer weight of their movement. Others were fast and ravenous, small swarms that contaminated everything they touched. All of them shared one thing: an instinctive hatred for the cold we had brought into their home.
In twenty years of conflict, the human population fell from eight billion to less than one. It was not a war. It was an extinction that had not yet ended.
· · ·
IV — the man who remained standing
In the year 2107, when it seemed the last remnant of civilization was about to be swallowed by the earth we had wounded, a man presented a solution.
Not to save the world. The world was already gone. To save what remained.
The Plantations. Colossal structures — part city, part fortress, part machine. Mobile on hidden tank treads, capable of retreating, advancing, fleeing. Food generators, energy storage facilities, centers of life compressed within walls of steel and glass that drifted across the devastated land like islands over an ocean of ash. Humanity would never again stand on solid ground. But at least it would survive.
Fifteen years later, in 2122, the same man presented a weapon.
The FranXX. Combat mechas that carried his name. Always piloted in pairs — a boy and a girl, bonded through an interface that went beyond the mechanical, one that demanded synchrony, trust, complete surrender. Like two Jian birds, each with only one wing, incapable of flight alone. For the first time since the creatures had awakened, humanity had something capable of bringing them down.
Nobody questioned why they had to be pairs. Nobody questioned why that man was still alive after all of it. After so much time.
Huliver FranXX. Present in 2058, when the first drill broke ground. Present in 2107, when the Plantations were raised. Present in 2122, when the first mechas entered combat. Always the same name. Always the same photograph. The same face that did not age. The same expression — of someone who knows something they have no intention of sharing.
A hundred years. One man.
Or something that looked like one.
· · ·
V — those born to serve
In 2140, a new generation of pilots was born.
Children created in controlled facilities. Without family. Without choice. Without a childhood worth the name. Raised for a purpose they never asked for and were never fully told. The society of the Plantations barely thought of them — they were tools, not people. Necessary, yes. But disposable in the same way any piece of machinery is disposable once it has served its function and rusted through.
Called parasites. Not as a term of endearment.
Doctor FranXX had planned them with the same cold precision he had applied to everything else. The mechas needed young pilots — adaptable bodies, malleable minds, hearts still capable of trust. And so the children came. As if he had waited for the weapon to be finished before forging those who would wield it.
Nobody noticed the design. Or if they did, they chose not to look directly at it.
· · ·
VI — now
It is the year 2158.
Exactly one hundred years since the first drill broke ground. One hundred years since we woke something that should never have been woken. The parasites born in 2140 are eighteen years old now — grown in a world that never knew solid ground, a clean sky, or the color green of an untouched forest. A world where children are born to fight and adults have forgotten how to feel. Where the body is an instrument and the heart is a liability.
They do not know today is an anniversary.
They do not know that the man who created them was there on the first day. That he watched everything happen. That he may have allowed everything to happen.
There is still much they do not know.
But they will find out.
This is the story of children who were born to be tools.
And who, in spite of everything, learned to feel.
Of a love that had no permission to exist.
And that existed anyway.
Like two Jian birds.
One wing each.
Incapable of flying alone.
But together — capable of anything.