Koujin Zenin understood one thing very early in life.
He had not been born out of love.
He sat on the edge of his futon, feet dangling above the floor, morning light spilling softly through the paper window. The wooden sword leaned against the wall beside him, still rough from use the night before.
His body ached, but his mind was clear.
This was the quiet time — the only time when memories didn't hurt.
The Zenin Clan did not see children as people.
They saw them as results.
Maki and Mai were the first result.
Twins.
From the moment they were born, the elders had frowned. Twins were considered a flaw in the Zenin bloodline — cursed energy split, potential divided. When it became clear that one twin had no cursed energy at all, and the other had only a weak amount, the verdict was sealed.
They were failures.
Koujin didn't remember this happening. He learned it later, by listening.
The Zenin elders never shouted or argued. They spoke calmly, politely — which somehow made it worse.
"The bloodline needs correction."
"One more child should be enough."
"A son, preferably."
Those words weren't spoken to Koujin.
They were spoken about him.
His mother never had a choice.
She was already exhausted from giving birth to twins. Her body hadn't recovered when the pressure began. Not threats — Zenin didn't need to threaten their own.
Expectation was enough.
Naobito didn't oppose it. He didn't need to. The clan's will mattered more than personal feelings.
So Koujin was born less than two years later.
Not because he was wanted.
But because the Zenin Clan needed a redo.
At first, there was attention.
Servants watched him closely. Elders tested him more than once. They waited for cursed energy to stir, for something — anything — to prove he was different from his sisters.
Nothing happened.
When the results came back the same, the interest disappeared overnight.
Koujin was labeled quietly and efficiently.
Another failure.
This time, the clan didn't even bother hiding its disappointment.
His childhood after that was uneventful in the worst way.
He was ignored.
Maki trained constantly. Mai stayed close to their mother. Koujin was allowed to exist, but not encouraged to grow.
He learned early how to stay out of the way.
But staying out of the way didn't protect Maki.
Naoya Zenin entered Koujin's life when Koujin was six.
Naoya was already a teenager then — confident, powerful, and praised by everyone around him. He represented everything the clan valued.
He also despised weakness.
That day, Koujin had followed Maki to the training yard. She was practicing alone, bruises still visible from earlier drills.
Naoya stopped when he saw her.
"So you're still playing with swords?" he said, amused. "You really don't learn."
Maki didn't back down. She never did.
She attacked first.
She was fast — faster than most kids her age — but it didn't matter. Naoya blocked her strike easily and countered without hesitation.
He hit her hard.
Not enough to kill her.
Enough to teach a lesson.
Koujin remembered the sound of her hitting the ground.
He remembered how his chest tightened.
He didn't think.
He just moved.
He ran forward and swung his fist at Naoya's leg — weak, clumsy, desperate.
Naoya looked down, surprised for a moment.
Then he kicked Koujin aside like he was nothing.
Koujin hit the ground and couldn't breathe.
The pain was sharp, but what hurt more was the silence.
No one stopped Naoya.
No one scolded him.
To the clan, this wasn't abuse.
It was correction.
Maki dragged Koujin away after that.
She didn't say anything. Neither did he.
They both understood something that day.
If they stayed weak, this would keep happening.
That was the beginning.
Not of the system.
But of Koujin's decision.
He stopped waiting for things to change.
He stopped hoping someone would protect them.
Instead, he began watching how people moved.
He trained at night, quietly.
Not to impress anyone.
Not to be acknowledged.
But so that one day, when someone tried to kick him away again—
He wouldn't move.
Koujin's nights settled into a routine.
When the Zenin compound grew quiet and the lamps dimmed, he would leave his room with his wooden sword and head for the eastern training yard. No one told him to do it. No one praised him for it either.
He trained because it was the only thing he could control.
His movements were slow and deliberate. He focused on his stance, his grip, and most of all his breathing. Moon Breathing was still unstable, something he could only touch briefly before his chest began to burn, so he treated it carefully.
One breath.
One cut.
That was enough.
Koujin lowered the wooden sword and exhaled slowly, letting the tension leave his shoulders.
[Moon Breathing – Form 1 Stability: Slightly Improved]
The notice appeared briefly, then faded.
The system never urged him forward. It never praised him.
It only recorded what already existed.
That suited him.
The changes came quietly.
He didn't grow taller overnight. His arms didn't suddenly gain strength. Instead, his balance improved first.
His feet landed more softly. His recovery between movements shortened.
Even outside of training, his breathing stayed slow and even, like his body had learned a new default.
He stopped flinching.
Maki noticed before anyone else.
One evening, she leaned against the doorway, arms crossed, watching him practice slow, deliberate swings. He wasn't fast. He wasn't strong. But his movements didn't waver.
"You're different," she said.
Koujin paused mid-form. "Different how?"
She watched him a moment longer before answering.
"You don't panic anymore."
He thought about it.
She was right.
Two months later, the notice arrived.
No one asked Koujin if he wanted to join the Kukuru Unit.
At nine years old, Zenin children without cursed techniques were no longer considered unawakened. They were considered decided.
Useful or useless.
Tool or waste.
Koujin had known this for a long time.
The paper was placed outside his room early in the morning. No name written by hand. No seal. Just a printed directive.
Zenin Koujin
Age: 9
Status: No cursed technique
Assignment: Kukuru Unit – Training Division
That was it.
No congratulations.
No explanation.
Just an order.
Koujin stared at the paper for a long time before folding it carefully and slipping it into his sleeve.
"So this is it," he murmured.
The Kukuru training grounds were far from the center of the Zenin estate.
Closer to the outer walls.
Closer to where expendable things were kept.
The buildings were older. The weapons were worn smooth from overuse. The instructors looked like men who had stopped expecting improvement.
Koujin arrived early.
He stood in line with other children his age, all wearing the same plain uniforms. Some looked angry. Some frightened. A few looked empty.
None looked hopeful.
"These are the ones with no techniques," an instructor said bluntly. "You exist to fill gaps. To take hits. To die if needed."
No one argued.
Training began immediately.
They were run until their legs shook.
Forced to hold stances until their arms went numb.
Struck when they failed to respond quickly enough.
There was no cursed energy training.
No technique theory.
Only repetition. Pain. Endurance.
Just survival.
Koujin endured it silently.
His body hurt constantly. Bruises layered over bruises, never fully fading. But his breathing stayed steady. He had learned how to pace himself long before this.
Moon Breathing stayed locked away.
This wasn't the place to reveal it.
Maki found him that evening.
She stood at the edge of the training yard, fists clenched, watching him practice sword forms under instruction.
"They put you in," she said.
Koujin nodded. "It was always going to happen."
Her jaw tightened. "You're nine."
"So were you," he replied quietly.
She didn't answer.
The first lesson Koujin learned in the Kukuru Unit was that rest was a privilege.
They were made to run laps around the outer wall of the estate, gravel biting into thin sandals. The pace never slowed, not even when someone fell behind.
When a boy tripped and scraped his knees bloody, the instructor didn't stop the run.
"Get up," he said flatly. "Or stay down and be counted later."
The boy got up.
By the time Koujin finished the course, his lungs burned and his legs trembled. He didn't collapse — not because he was strong, but because he had learned how to breathe through pain.
The instructors noticed that.
They said nothing
The Kukuru Unit didn't make Koujin special.
It made him replaceable.
That lesson was repeated every day.
"You will not stand out."
"You will not disobey."
"You will not survive by talent."
Koujin listened.
He learned.
The Kukuru Unit didn't teach mastery.
They taught function.
Koujin was handed three weapons in one afternoon: a short sword, a spear, and a weighted baton.
"Learn how they feel," the instructor said. "You won't always get a choice."
There were no forms, no demonstrations. Just targets set at different heights and distances.
Swing.
Thrust.
Strike.
When Koujin's grip slipped, the baton cracked against his knuckles.
He adjusted.
By the end of the day, his hands were swollen and numb — but his movements were cleaner than when he started.
Pain wasn't treated as an obstacle.
It was treated as background noise.
Pairs were formed. One child attacked. The other defended. The instructor intervened at random, striking pressure points or joints without warning.
"React," the instructor said. "Not after. During."
When Koujin took a blow to the ribs, the air rushed out of him — but his feet stayed planted. He shifted his stance and finished the motion he'd started.
The instructor paused, watching him closely.
"Hm."
That sound followed Koujin for the rest of the day.
At night, when his body could barely move, he still trained.
Moonlight.
Wooden sword.
One breath at a time.
[Moon Breathing – Form 1 Stability: Gradual Improvement]
Slow.
Controlled.
Hidden.
——
[End of Chapter 2]