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Threadbound Fates

Summary:

Soulmate Au x Illumi Zoldyck
The romance is kinda a subplot. i wanted to make this more action.
Also we love an OP character!! :p
It's still ongoing so the direction can go anywhere
English is not my First language

ON HIATUS

Notes:

This is a work in progress, so it's not done at all. if you have any concerns or ideas. please leave a comment and i'll see if i can intergrate it.
love y'all

Chapter 1: The Wild Card

Chapter Text

The sky above Zaban City was pale with morning haze, clouds dragging their bellies across the mountain peaks like beasts too sluggish to rise. Beneath them, a strange energy thrummed through the crowd of wanna-be Hunters. Their voices forming a low and chaotic murmur—nervous chatter, muffled boasts, the occasional bark of laughter from those too cocky to understand what they were about to face.

They stood like mismatched chess pieces on a cracked stone board, each believing they were destined to survive, to ascend, to become something more. Some had trained for years. Others had bought their way in. A few just got lucky.

And then there was you.

You stood at the edge of the crowd, a silent anomaly. Covered in a black cloak that masked your frame, your hood drawn just far enough forward to shade your expression, but you didn’t hide. Not truly. You simply watched. Quietly. Calmly. Like a knife resting on a table—still, but dangerous in its potential. Not the stillness of someone overwhelmed or uncertain, but of someone entirely in control. You weren’t fidgeting, shifting weight from foot to foot, or watching the other competitors with suspicion.

You were watching the sky.

The clouds rolled in slow arcs overhead, brushed with the golden gray of a sun not yet strong enough to burn away the haze. The world felt quiet in that moment, but you knew better. Danger doesn’t always roar. Sometimes it breathes quietly just behind you.
The Hunter Exam was not a game, not for people like you. It was a formality.

No one noticed you. Not yet. They saw only what they wanted to see: a girl not quite tall enough to intimidate, not loud enough to be remembered. Your expression gave nothing away. You blinked slowly, eyes tracking the shifting movements of the crowd with a kind of passive detachment. You weren’t here to make friends or statements.
You were here to pass.

And if passing meant survival, then survival was the easy part.

The crowd shifted as the tall, thin figure of the examiner appeared through a nondescript door embedded in a cliff wall. He was unassuming, dressed in a long-sleeved green tunic and matching pants, but the pin on his chest marked him as someone not to be underestimated. You noted the sharp glint in his eyes as he called for silence, and the crowd obeyed.

The first phase had begun.

The tunnel that swallowed the contestants was long and dim, its smooth walls slick with moisture. The pace started light, almost playful, but it didn’t take long before some began to falter. What started as a jog became a grind. Many were sweating after the first half hour. After the first hour, some fell behind.

The winding passage stretched on without end. The air grew damp, heavy with the scent of moss and sweat. Your pace remained steady, even, utterly unshaken. You didn’t look ahead or behind. You listened instead—to the breathing of others, the slap of their feet, the way some of them began to pant or stumble

You passed them without speaking—just a quiet breeze against their necks, a shadow flickering at the corner of their vision.

A small group of younger boys kept catching your peripheral attention. You recognized the spiky-haired one—Gon Freecss—from the way others whispered his name. The white-haired boy beside him must have been Killua Zoldyck. You didn’t miss the way he moved—loose and feral, but with the dangerous ease of someone trained to kill. They were strong, those two. You filed it away.

One of them glanced in your direction.

You kept your eyes on the path.

Gon Freecss blinked as you moved by, a slight breeze ruffling his green jacket. Killua tilted his head, watching your form retreat.
“Hey,” Gon said between breaths, “did you see her?”

“Yeah,” Killua replied, curious. “She was fast. Weirdly fast.”

“She doesn’t look like much,” Leorio grunted from behind them. “Probably burned out by the halfway point.”

Kurapika’s golden eyes narrowed. “I wouldn’t count on it.”

You never turned around.

After hours of running, the group exited into a fog-drenched swamp. Mud sucked at boots, vines wrapped like serpents, and insects with human eyes descended from the fog. Panic spread through the ranks. Some ran. Others fought. Most simply died.

You moved like water through the chaos—light on your feet, eyes sharp, the faintest twitch of your fingers delivering devastating precision. When a man-faced leech lunged toward a young contestant who had tripped over a root, you reached him first. Your hand closed around the creature’s neck before it could strike. There was a soft crack, like the snapping of dry wood. You tossed the limp body aside and kept walking, boots barely splashing through the muck.

Killua caught a glimpse of you through the fog—your cloak fluttering behind you like a crow’s wings, the way you moved without hesitation. No wasted motion. No hesitation. He narrowed his eyes, and Gon glanced toward where he was staring.

“She’s scary,” Gon muttered, admiration plain in his voice.

“She’s good,” Killua replied.

Kurapika, a few steps behind them, spoke softly. “She didn’t use Nen. That was raw strength”

“Doesn’t need to,” Leorio added with a huff. “Did you see what she did to that lizard thing? Crushed it without blinking.”

Kurapika looked thoughtful. “She’s not just strong. She’s... deliberate. She knew exactly what force to use. That’s control.”

You didn’t hear them. Even if you had, it wouldn’t have mattered. Words didn’t weigh much, and you weren’t interested in praise or fear.
You simply moved forward.

---

No one approached you that day.

They didn’t know how.

You weren’t exactly scary. You didn’t glare or posture. You just didn’t invite closeness. You were a blank space on a map—no landmarks, no signs, just white.

Phase after phase, the exam stripped away the weak and the arrogant. The number of participants thinned like dying embers. And still, you endured—never at the front, never at the back, but always exactly where you needed to be. You spoke only when required, and even then, your words were measured and few.

Even in the tower challenge, when the teams had to fight or collaborate, you worked alone. Sat alone. Slept alone. When someone tried to steal your food ration in the night, they didn’t make it to breakfast. No one found a body. Just a single bloodstain on the cold stone floor that had been scrubbed by morning.

Still, the rumor spread: don’t touch the quiet one.

Eventually, curiosity overpowered fear. Gon’s group first approached you. Not with a challenge, but a question.

You were sitting cross-legged on the stone floor, cloak pooled around your legs. You were staring at the far wall as though reading something invisible, sipping from a water flask when they stopped a few feet away.

“You fought off two swamp beasts without effort,” Kurapika said. “And you haven’t lost a single challenge. I’ve been analyzing everyone’s combat style. Yours is... difficult to classify.”

You blinked, then turned your head toward him.

“What do you want?”

Gon crouched in front of you, tilting his head like a curious cat. “We’re not trying to be mean. We just wanna know how strong you are.”

You blinked, startled by the directness.

“I’m strong enough.”

Your voice was soft. Not quiet in the way of someone trying to avoid notice, but quiet in the way of someone who had nothing to prove. The words carried weight.

Kurapika looked thoughtful. “Are you holding back?”

You returned his gaze. “Yes.”

Killua raised an eyebrow. “Why?”

You capped your flask. “Because I don’t need to show everything to pass.”

“You could help us,” Gon offered. “We’re trying to pass too.”

“I’m not your enemy,” you said, rising to your feet with fluid grace. “But I’m not your ally either. Don’t ask me to choose.”

They didn’t stop you when you walked away.

You sighed. You didn’t dislike them, not really. But you didn’t know how to talk to people like that—warm people, hopeful people. People who believed in bonds and justice and dreams. You understood strength. You understood how the world turned on sharp blades and broken bones. That was the only language that had never lied to you.
That night, as the storm passed and silence reclaimed the woods, you lay beneath a low overhang, watching droplets slide down leaves overhead. You rolled up your sleeve to inspect the mark carved into your right forearm—a curling spiral interwoven with a line of ancient characters. The soulmate mark.

It had been there since you were a child, and you’d hated it almost as long. The idea of fate had always felt like a chain. Something binding. You were strong because you had to be. Because no one was coming to save you. Because if someone tried, you wouldn’t let them.

You pulled your sleeve back down. The mark was a myth. That’s what you told yourself. Just ink and nerves.
You never felt it stir.

And that was exactly how you wanted it.

---

The final phase of the exam came and went. One-on-one battles designed to test not only strength, but choice. Most people broke under the pressure. Some cried. Others gave up. You stood at the center of the arena like a statue carved from obsidian, unmoved by your opponent’s threats or bluster.

He rushed you.

You ended it in two moves.

The first shattered his stance.
The second knocked him unconscious.

His body didn’t hit the ground so much as collapse into it.

Hisoka clapped slowly from the observation deck. You didn’t look up.

After the match, the examiners whispered among themselves. Some questioned how someone so seemingly unremarkable could dominate so thoroughly. Others simply passed you and moved on. You were given your license, a slip of metal light in your hand, but heavy with meaning.

The others celebrated. You did not.

That night, they had a small gathering near the edge of the forest, where Gon cooked something over a fire and Killua traded sarcastic insults with Leorio. Kurapika spoke softly about the meaning of justice. Laughter rose into the night air like smoke.

You watched from a distance.

You told yourself you didn’t need them. That this wasn’t your path. You were strong alone.

And yet… you stayed close enough to hear.

Just for a while.

You left before the fire burned low.

By morning, you were gone. You didn’t say goodbye. You didn’t need to.
The forest took you in like an old friend, and you moved through it without hesitation. You had no destination. You were simply traveling. That was enough.
You didn’t know that, far away, someone else had begun to move.

A man in black stood before a mirror, removing his disguise piece by piece. His eyes were pale and cold, his hair long and pinned behind him. On his right forearm was a mark—a spiral identical to the one you carried.

But he did not feel its pull.
Not yet.

And so, the two of you remained strangers.

For now.