You blinked your eyes open, squinting against the dim light that filtered through the dusty air. The bar was eerily empty. Not a single villain in sight, not even Kurogiri, who you had come to associate with the constant presence of swirling smoke and shadowy portals. The place had an unsettling quiet to it, like it was waiting for something—or someone.

You frowned, confused. Kurogiri hardly ever went anywhere, and if he wasn't accompanying Shigaraki or the other league members, someone was usually stationed outside. Magne, Toga, Dabi—they were always somewhere nearby. This felt wrong. A complete shift in the normal hum of things.

With a sigh, you stretched your wings, their dark edges brushing against the walls as you flexed your muscles. If there's a chance to escape, it's now. You had no intention of staying trapped here a moment longer than necessary. You weren't about to let these villains have their way with you.

The chains that held you were clearly not built for something of your size. You clawed at the thick metal around your wrist, the iron groaning and buckling under the pressure of your claws. It wasn't long before they cracked open with a satisfying snap.

However, the chain around your neck was a different story. You stood, feeling a slight tug as the weight threatened to choke the air from your lungs. You gagged for a moment, your body fighting against the constriction, but you quickly regained control. With a snarl, you twisted your body in a sudden movement, wrenching the chain from its anchor in the wall. The metallic sound was almost gratifying.

Pulling off the muzzle was an equally satisfying act. It had never quite fit you anyway—what kind of villain had the audacity to think they could contain you? A quick twist of your fingers summoned a notebook and quill, your mind already on what you had to do next.

You wrote with quick strokes, the ink gliding across the page as you carefully, and somewhat cheekily, crafted your message.

Sorry about leaving so soon, but you're just not right in the head. I've got bigger concerns than a few villains. See you when Muerte comes for you.

— Onyx

The last words were almost playful, but you knew they'd catch their attention, riling them up. As for the rest? Well, they weren't ready for what was coming.

A snap of your fingers, and the notebook and quill vanished into thin air. The room felt lighter somehow, the oppressive weight of the League's hideout fading as you prepared to make your exit. With a flash of green light, you teleported, leaving behind a world that wouldn't know what hit it.

As you disappeared, you couldn't help but smile. "Thanks for the hospitality," you muttered to no one in particular. "But I'm afraid it's time to go."

◤◢◣◥◤◢◣◥◤◢◣◥

All For One coughed, the strain in his chest almost cracking his mask as he struggled to steady himself. His breath was labored, and his face twisted in frustration as he tried to regain his composure. "It's not that easy..." he murmured through clenched teeth, his voice barely audible over the sounds of the battle.

Before he could finish his thought, a wave of intense heat slammed into his back. He yelped in pain, his body jerking forward as fire exploded in a blast across his form. He fell to the ground, crashing with a deafening thud that sent shockwaves through the earth. The impact shattered the ground beneath him, the cracks spreading like veins through the dirt.

As he lay there, dazed, his vision swam with red and orange. Blood dripped from his side, and the air around him crackled with an unsettling energy. But it wasn't the pain that made his heart stop—it was the sight of his son, Shigaraki, his wide eyes filled with disbelief as he stared at the scene before him.

Shigaraki's hands trembled, his gaze locked on the crater where his father had fallen. Blood seeped from the wounds, pooling beneath All For One's body. The green flames flickered around him, the fire casting eerie, long shadows against the wreckage.

And then, a voice broke through the thick silence.

"Hey, bitches," you snarled, your voice carrying an edge that sent a chill down their spines.

Hovering above them, your green fire swirling around you like an untamable storm, your massive wings unfurled, casting a dark shadow over the ruined battlefield. Your horns gleamed in the flickering light, a fierce, almost unholy aura surrounding you as you hovered above them all. Your green eyes gleamed with an intensity that made even All For One's power seem insignificant in comparison.

Shigaraki's eyes widened in both horror and awe. "Onyx..." he breathed, too shocked to move.

You were here. And nothing in this world would stop you from taking control.

You smiled warmly down at them, the soft sunlight dancing across your features. For a moment, everything felt serene—the chaos of battle, the tension in the air, all seemed to fade away as you observed your friends. Among the vibrant flowers of the garden, they stood in perfect harmony. Izuku, Momo, Todoroki, and even Bakugo—each of them bright, hopeful, and proud. Their gazes met yours with a mix of joy and curiosity, their eyes questioning, as if asking where you had been all this time.

They had every right to be curious. You had always been a mystery, always on the edge of their understanding. Yet, despite everything, the bond between you all had only grown stronger.

"Oh, my darling dears," you murmured softly, letting the words hang in the air like a promise. A promise that, despite everything you'd gone through, you would always find your way back to them.

But as the warmth of that moment lingered, you felt the simmering heat of anger rise within you, the fire that had been lying dormant for so long. Your gaze shifted to the figure that stood behind them—the one whose twisted form threatened to unravel everything you had worked for.

Shigaraki.

His sinister laughter echoed around you like a foul wind, an ominous reminder of what had been done to you, what he and his League had done. But that laughter—oh, that laugh would be silenced today.

You narrowed your eyes and glared at Shigaraki, your voice cold and steady as you addressed him. "Now, you've bound me, hijacked me, and gagged me—I think it's time your little boost gets taken from you." Your words were like daggers, each one aimed straight at his heart. Your voice was calm, but the threat beneath it was unmistakable.

You lifted your arm with quiet but undeniable determination, your eyes flickering with a fierce, green glow. And as you did, All For One, the once-imposing figure, began to float. It was slow at first, an unnatural movement that seemed to defy all the laws of nature. The green aura surrounding him twisted and contorted, as if something was eating away at him from the inside.

His face twisted in agony, and he let out a strangled gasp. Something was wrong.

With every passing second, the writhing aura tightened around All For One, like invisible chains made of pure malice. His form twisted and jerked in the air, his body spasming as though the very core of his power was being torn apart. The once invincible villain, whose hands had struck fear into countless heroes, was now a puppet in your hands.

Shigaraki's eyes widened in disbelief, a flicker of panic crossing his features. "What... what is this?"

But you didn't need to answer him. You knew what was happening. The green fire that swirled around you wasn't just a weapon—it was life. And it was taking everything from him.

All For One's expression contorted, his mind and body at war with one another, as the overwhelming pressure of your power crushed him from all sides. You wouldn't let him win. Not this time. Not ever again.

Your eyes flickered to All Might, his once-mighty figure now battered and bloodied, yet he still stood tall, still reaching out to you with that familiar, hopeful expression. His hand trembled slightly, but his words were firm, filled with the same unwavering resolve that had made him the Symbol of Peace for so long.

Don't kill him, Onyx.

You froze for a moment, the surge of green fire around All For One pausing in midair as his desperate plea cut through the raging storm of fury within you. You hadn't expected him to say that. You hadn't expected anyone to ask you to stop now, not when everything felt so right. After all that had happened, all the pain, the betrayal, and the chaos, how could you let All For One live?

But All Might's voice... it was gentle, even in his broken state, filled with an emotion you hadn't expected: concern.

"Don't kill him, Onyx. That's not how heroes behave."

Your heart ached. You knew what he meant—heroes were supposed to protect, not destroy. They were supposed to be the light, the guiding hand in the darkness, not the ones who snuffed it out completely. And yet, after everything this man had done, how could you simply let him go?

You glared down at All For One, whose writhing form remained suspended in your aura, his face contorted in agony as the life force that once filled him began to unravel. He was so close to the end.

But then your gaze drifted back to All Might. You saw the tremor in his eyes—the fear. Not for himself, but for you. The weight of his words settled on your shoulders like an anchor, forcing you to confront something deeper than rage or justice.

"Please," All Might continued, his voice cracking, his blood still seeping through his wounds. "Just don't go down that path. You're not a killer."

You're not a killer.

You paused, the words echoing in your mind like a distant whisper. The green flames flickered in your hands, their intensity wavering for just a moment. Could he be right? Was this really what you wanted? Was this what you wanted to be?

The tension in the air was suffocating. All For One's breaths were ragged, strained, but his malevolent grin never wavered. He knew he was moments away from death. And yet, he still believed that he would win in the end. But the real question remained: would you let him?

You took a slow, deep breath, feeling the weight of your decision in your chest. Could you really stand here and become just like him? Could you let yourself be consumed by vengeance, by the need to destroy what had been the cause of so much pain?

You didn't know what was right anymore. But you did know one thing—heroes didn't take lives.

With a sharp exhale, you let go of the green aura enveloping All For One, allowing him to drop to the ground, his body heaving as he struggled to stay conscious. The power that had once been crackling at your fingertips now dissipated into the air.

All Might's hand fell limply to his side, and for a moment, the world seemed to hold its breath.

You slowly turned your gaze to him, the weight of his plea still lingering in the air. Your heart beat loudly in your chest.

"I'm not a killer," you whispered, more to yourself than to anyone else.

And for the first time in a long while, you made a choice that wasn't driven by rage, but by something else entirely—hope.

"Not today," you murmured softly, letting the fire in your veins fade into a gentle warmth.

The silence that followed felt heavy, yet somehow... liberating.

Shigaraki's eyes widened in shock, his fingers still hovering against your throat as you effortlessly caught his wrist with a sharp, glimmering claw. For a moment, time seemed to freeze. The anger that had consumed him only a second ago now faltered, replaced by something he was entirely unprepared for—vulnerability.

Your gaze met his, and despite the deadly, intimidating aura that surrounded you, there was no fear in your eyes. Instead, there was a strange softness, a gentle understanding that unnerved him more than anything else.

His grip on your throat weakened, but he didn't let go. It was like he was searching for something, anything to hold on to, even if it was just his grip on the creature that was supposed to be his enemy. He tried to pull his hand away, but your claws gently held him there, as though you were stopping him from running away, from rejecting what was happening in this fleeting moment.

"It's alright," you said, your voice calm, almost soothing. There was no anger or malice, just a quiet compassion that seemed entirely out of place in the chaos of the battlefield. You tilted your head slightly, your scales glimmering in the light. "It's alright, Tenko Shimura."

The words hung in the air between you two, and his brow furrowed in confusion. "W-what did you just say?" His voice was raw, almost too quiet for someone so used to shouting, to commanding. The tension in his hand flickered as he looked at you, your claws still gently holding his wrist like a lifeline.

"Tenko Shimura," you repeated, your voice steady but not without a hint of something—sympathy, maybe? "I know who you are. And I know the weight you carry."

He pulled back again, this time much harder, his hand finally slipping from your claws. He staggered a step back, trying to regain his footing, his breath coming in short, quick bursts. For a second, he didn't say anything. It was like he was processing the words, trying to make sense of them in the whirlwind of rage and destruction that usually clouded his mind.

"I—I'm not Tenko," he growled, his voice cracking slightly. "I'm Shigaraki! Shigaraki!" He raised his hands, like he wanted to scream, but the words caught in his throat. His eyes flicked away from you, still not wanting to meet the sincerity you'd offered him.

You tilted your head, a small, knowing smile tugging at the corner of your lips. "Sure, whatever you say," you said with a dry chuckle. "But I can see it in your eyes, Tenko. The person you used to be, the person you could be. You're still in there." You shifted slightly, your wings rustling in the wind. "And I'm not here to fight you. Not today, at least."

He scoffed, his expression a mix of disbelief and frustration. "You're insane," he muttered, more to himself than to you. "You should be with them, with the heroes. Not with me. I'm the villain."

"I don't really do the whole 'hero' thing," you shrugged, your claws still glinting in the fading light. "But I know that you are still you, no matter what you call yourself."

Shigaraki stared at you, his hand twitching, ready to lash out, but something—some sliver of doubt—held him back. He clenched his fists, then relaxed them, like the fight had drained out of him just as quickly as it had appeared.

"Get out of my head, you—" he began, but stopped himself, his voice trailing off, defeated.

"Alright, alright," you said, rolling your eyes dramatically. "No need to make it sound like I'm getting all touchy-feely with you. It's just a few words, Tenko. Chill." You winked, a little smirk tugging at your lips.

Shigaraki let out a frustrated sigh, his face scrunching up in irritation. "This is so messed up," he grumbled.

"You're telling me." You leaned back slightly, your wings flaring out with a soft whoosh. "Look, I don't expect you to change overnight. But if you ever want to chat again—without choking me out next time—that's cool."

Shigaraki stared at you for a long moment, a storm of emotions swirling in his gaze. The villain, the killer, the rage-filled monster, all seemed to disappear for a moment. In its place was a lost, confused young man who had forgotten what it meant to just be.

And then, just as quickly as it had appeared, the storm was gone. Shigaraki's eyes hardened again, his mask of arrogance returning. He turned away with a grunt. "Whatever. I don't need your pity."

You sighed dramatically, crossing your arms. "Whatever, dude. You're such a drama queen."

He didn't respond, but you could see the subtle twitch of his hand. Maybe, just maybe, he'd heard you.