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Heart of a Hunter, Soul of a Demon

Summary:

An alternate universe where after Rumi's confrontation with Celine, she no longer sees the point in fighting for humanity and the Honmoon anymore. Instead of showing up to the Saja Boys' concert to fight back with "What it Sounds Like," she surrenders completely to the part of her that has been unfairly supressed for two decades.

Chapter 1: Hunter no More

Chapter Text

The final notes of “Your Idol” reverberated through the cavernous hall, the echoes of synth and bass lingering like poison in the air. The crowd below swayed in a trance, their eyes glazed, their souls dimmed and ready to be devoured. Gwi-Ma’s presence loomed at the center of it all—an ancient shadow curling across the stage, his grin carved deep into the darkness.

But from the back of the entranced crowd, a soft blue glow broke through the sea of emptiness. Fragile. Defiant. Human.

Rumi.

Her light flickered against the overwhelming black, stubborn but trembling, as though her soul itself hadn’t decided whether it wanted to fight or fade. For a moment, the Saja Boys stilled on stage, their silhouettes sharp beneath the neon haze, their crimson eyes following that glow.

Gwi-Ma’s head tilted, amused. His voice was velvet laced with knives as it rippled across the hall.
“Well, well. Look who dares show her face.” His laughter rumbled low. “You, of all people. Thinking you could fix this—when you couldn’t even fix yourself.”

The words hung heavy, cruel and precise. Rumi’s lips parted, her shoulders sagging as if the accusation had cut straight through her chest. And yet, when she finally spoke, her voice was quiet, steady. “I can’t”

Gwi-Ma’s voice rumbled low, heavy with satisfaction. “And now, the world finally sees you for what you are.”

Rumi didn’t flinch. Her gaze was steady, her voice flat. “They do.”

The demon king’s grin widened. “And the Honmoon… it is no more.”

For an instant, her soul sparked brighter, a fragile light straining to resist. Words hovered on her lips—Then we’ll build a new one. A last ember of defiance, of the girl she had been.

But the words never left her.

Instead, she exhaled softly, her shoulders sinking.

“It is.”

Agreement. No defiance, no spark. Just surrender.

Gwi-Ma’s grin widened, ready to twist the knife deeper—but then he stopped. His gaze sharpened.

The blue spark around her faltered, dimming, shrinking. To anyone else it would have looked like weakness, a spirit broken. But the ancient king knew better. This was no collapse. This was a shift. A surrender not to despair, but to the darker truth she had caged for so long.

She was giving in.

A low hum of amusement rumbled from his throat, dark and resonant. “Hm. At last.”

Though Gwi-Ma had no corporeal form—only a titanic maw of magenta flame lined with jagged teeth—his presence pressed against her skin like a weight. She could feel the pull of his will, the curl of his grin, even without a face to see it.

“Come closer… hunter.”

And she obeyed.

Step by step, Rumi moved through the crowd, their hypnotized forms parting around her as though even in their stupor they sensed the change. Shadows curled across her body, marks blooming along her arms, her left eye gleaming gold with a slit like a predator’s. Her right hand flexed into a claw, blackened and sharp. The soft blue of her soul had vanished—consumed, replaced with something far older, far darker.

At the edge of the stage, the Saja Boys waited. Once, their grins had been all fangs and cruelty, a mocking welcome to the prey that wandered too close. But as Rumi stepped before them now, she saw something else entirely.

Acceptance.

Their gazes met hers, steady, unflinching, as if they had been waiting for her all along. And Jinu—always the most unreadable of them—was suddenly the clearest. His eyes softened, his hand extending again slowly toward her, not in temptation, but in invitation.

For a heartbeat, the hall went silent.

Then Rumi reached out. Her demonic fingers wrapped around his, the claw fitting against his palm as though it had always belonged there. The air crackled at the contact, binding her choice in something heavier than words.

Jinu did not smile, nor did he flinch. He simply held her hand tighter, pulling her into their circle, into Gwi-Ma’s shadow.

For the briefest of instants, something flickered.

The blue glow of her soul, faint and trembling, sparked once more inside her chest. It pulsed weakly against the storm of corruption wrapping around her like chains, a dying heartbeat refusing to surrender. Her vision blurred as tears welled in both eyes—one human, one demon—tracing down her cheeks in uneven streams.

And then she laughed.

It wasn’t joy, nor was it madness. It was a sound fractured in two—the fragile, broken laughter of a girl who had fought too long and lost everything, woven together with the guttural rasp of the demon inside her, savoring the sweet release of freedom. The two voices tangled and collided, echoing across the shattered hall like a cruel duet.

Her knees buckled. She closed her eyes, breath catching in a final, shuddering gasp.

With a single, pained yell, Rumi collapsed to the floor.

The instant her body struck the stage, her soul tore free, bursting outward in a shockwave of blue light. Ripples cascaded across the Honmoon, its once perfect glamour shattering like glass around them. The illusions dissolved, revealing jagged fractures, black smoke spilling from every corner. The blue light fought against the suffocating shadows, one last resistance—before it, too, began to dim.

When Rumi rose again, she was no longer the same.

Her eyes snapped open, both gleaming a piercing, inhuman yellow, the pupils narrowed into sharp slits that sliced through the air like blades. Her lips curled back, and from her upper row of teeth, two fangs gleamed beneath the stage lights—marks of her new kinship with the demon world.

Her hands flexed, no longer flesh, but claws. Both arms ended in curved, lethal talons that shone with a metallic sheen. Her skin crawled with shifting patterns as its color warped into a sickly magenta, streaks of what once had been her human complexion still clinging faintly, like fragments of a life already gone.

The girl who had once carried a hunter’s soul was gone.

What stood in her place was something new. Something unshackled. Something that belonged to Gwi-Ma.

Magenta flames unfurled from Gwi-Ma’s massive frame, curling like serpents across the stage until they wrapped around Rumi. The fire did not burn her; it embraced her. Her once-white top and shorts—the outfit that had marked her as Huntrix’s radiant leader—were consumed in a hiss of embers. Fabric blackened, threads disintegrated, until the purity of white was nothing more than ash scattered in the air.

When the flames withdrew, she stood reborn.

Her body was draped in long, flowing robes of midnight black, the edges frayed as though woven from shadow itself. The fabric clung and rippled around her, heavy yet graceful, each fold seeming to drink in the light. Long sleeves dangled past her claws, trailing like smoke as she moved. The silhouette was solemn, funereal, yet undeniably regal—the attire of one who walked between worlds, neither human nor fully demon, but something more dreadful still.

The crowd—if they could be called that, now half-hollowed by “Your Idol’s” curse—shivered as though instinctively recognizing her as a herald of death.

Then, from the circle of Saja Boys, Jinu stepped forward. His movements were slow, deliberate, almost reverent. In his hand, he held a dark hat, wide-brimmed and heavy with meaning, the final piece of her rebirth. His arm extended toward her, an offering.

“Take it,” he said softly, his voice carrying an edge of solemnity.

Rumi’s eyes narrowed. She looked at the hat, then back at him, her piercing yellow gaze alight with something that flickered dangerously between defiance and amusement. A low scoff slipped from her lips.

“No.”

Her voice was still hers—unmistakably Rumi—but warped, fractured, layered with something darker that reverberated beneath her words. It sent a ripple through the air, as if even sound itself recoiled.

“I’m done hiding,” she said, her tone sharp, final. “I won’t cover my face. Not anymore. Not ever.”

Her claw rose and pushed the hat away with a flick, the motion dismissive, almost disdainful. Shadows rippled around her as if bowing to her will, her presence demanding to be seen, unmasked, undeniable.

She tilted her chin upward, fangs glinting, her newly magenta skin catching the light of Gwi-Ma’s flames. “The world will look at me for what I am—and it will not look away.”

For a moment, the stage fell into silence, the flames around Rumi pulsing like a heartbeat. Jinu stood closest to her, his hand still hanging in the air from where she had rejected his offering.

The dismissal cut deeper than he expected.

Something twisted inside him—an ache he couldn’t name, sharp and raw. He had thought she would take the hat, that she would complete the ritual as he once had, that she would walk the same path and in that choice affirm the bond between them. But the way she scoffed, the way she pushed it away… it was rejection. A rejection of him.

And it hurt.

His demon eyes narrowed, his jaw tightening. The slits of his irises trembled, stretching wider, flickering into something rounder, softer—human. His chest tightened with the memory of who he had once been, with the fragile echo of a young, ambitious, and selfish man who had wanted someone, anyone, to understand. For a heartbeat, he almost let it happen. He almost let himself be seen.

But at the last second, he crushed it.

The weakness burned away as he forced the change back, his eyes sharpening into slits once more, glowing a piercing yellow. His humanity slammed shut like a door locked from the inside. Whatever he had almost let slip vanished behind the demon mask he had worn for so long.

Behind them, a slow clap echoed like thunder.

Gwi-Ma’s hulking form loomed over them, magenta fire dancing from the gaping maw of his mouth, his voice thick with satisfaction.

“Well done, Jinu. Not only have you and your… Saja Boys… broken Huntrix, not only have you sung the world into silence—but you have given me something greater.”

His gaze fell on Rumi, his grin wide and cruel. “A child forged of both flesh and shadow. Half demon, half human. No longer chained by guilt, but driven—by grief, by rage, by betrayal so deep it will burn everything she touches.”

His voice dropped lower, meant only for the leader of the Saja Boys.
“As promised, I will now strip away the memories of your mother and sister. Are you ready to be free, Jinu?”

The four-hundred-year-old demon gave no answer. He only stood motionless, gaze locked on Rumi.
Gwi-Ma’s laugh rumbled, slow and cruel. “I shall take that as a yes.”

Flames coiled around Jinu’s head like serpents, tightening, searing. White-hot agony detonated in his skull, and he collapsed to his knees, clutching at his temples. Inside, the faces of his family—shocked, betrayed, reaching for him—were swallowed by Gwi-Ma’s infernal blaze, burning away piece by piece until not even their names remained.

When the fire receded, silence filled the void. Jinu rose, shoulders heavy, exhaling a long, shuddering breath. His eyes—slits glowing sharp and inhuman—reflected only relief.
“The voices… they’re finally gone…” he whispered, almost reverent.

The flames surged higher, flooding the hall in merciless magenta light. Gwi-Ma’s next words thundered, a proclamation that seemed to sear itself into the stone walls.
“You have brought me my successor. When the time comes, my queen will ascend—and rule all of demonkind.”

The words hung in the air like a sentence passed. The Saja Boys lowered their heads in unison, their acceptance silent but absolute. And at the center of it all, Rumi stood tall, her yellow eyes blazing, her claws gleaming, her robes whispering against the stage.

The hunter was gone.
The heir had risen.