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How you changed my world, you'll never know (I'm different now, you helped me grow)

Summary:

Chelsea floated in the ocean, tormented by guilt and conflicting emotions about Ruby. Initially a means to an end, Ruby's kindness and trust made Chelsea's mission to obtain the Trident and rise to power increasingly difficult and painful. Despite her determination, Chelsea was tormented by the thought of betraying Ruby, whose genuine warmth and trust had become a heavy burden on her heart.

OR: Chelsea struggles with the fact she’ll have to betray Ruby.

Notes:

title from angel of mine

Work Text:

Chelsea drifted languidly in the cool, cerulean depths of the ocean, her body weightless as the gentle ebb and flow of the water cradled her. Above her, the sunlight broke through the surface, casting shimmering, fragmented beams that danced and rippled like liquid gold. The patterns were mesmerizing, twisting and bending with each subtle movement of the waves. Yet, despite the beauty above, Chelsea's mind was anything but tranquil. It churned violently, much like the unseen currents far below—unrelenting and tumultuous.

Ruby.

The name echoed through her thoughts like the toll of a distant bell, a sound both haunting and inevitable. Chelsea hadn’t expected to care about her. When they'd first met, Ruby had been a mess of awkward smiles, hesitant gestures, and nervous laughter—far too fragile for the world Chelsea inhabited. She was supposed to be a mere nuisance, someone to brush off and forget. But something about Ruby had clung to her, digging its way under Chelsea's skin like the stubborn sand that lodged between scales.

Maybe it was her honesty, the way she tried so hard despite clearly feeling out of place. Ruby wore her insecurities like a cloak, but there was a determination beneath them—a spark that refused to be snuffed out. Chelsea could relate to that, though she'd never dare admit it out loud. The silent isolation, the feeling of not quite fitting into a world that had already made up its mind about who you were supposed to be—it was something Chelsea knew all too well.

Her heart gave a painful twist as memories floated to the surface, unbidden and unwelcome. Ruby laughing, her eyes bright and alive with a warmth Chelsea had never expected. Ruby offering her a hesitant smile, the kind that reached her eyes and made Chelsea's chest tighten in ways she couldn’t understand. And worst of all, Ruby trusting her. That trust was what hurt the most.

She had been raised on stories—tales told in hushed, reverent tones by her family, her community. Krakens were dangerous, they said. They were enemies, unworthy of the ocean’s grace, monstrous creatures that lurked in the depths, waiting to strike. Chelsea had believed those stories, had taken them to heart. And yet Ruby…

Ruby was none of those things. She wasn’t the menacing figure from the old legends, the lurking danger that threatened the sea. She was kind. Gentle. Genuine in a way that disarmed Chelsea entirely. Every smile, every laugh, every moment of vulnerability shared between them felt like a betrayal—not of Ruby, but of the very foundation Chelsea’s life had been built upon. How could she reconcile the Ruby she had come to know with the creature she had been taught to fear?

It had been so easy at first—deceptively easy. Befriend the kraken girl, gain her trust, and get close to the Trident. The plan had been simple, seamless, and flawless in its execution. Chelsea had felt invincible, confident that everything would unfold exactly as she intended. But then Ruby had to go and ruin it all by being so… kind. So genuine. So maddeningly real.

Chelsea’s jaw tightened, her teeth grinding together as frustration coiled in her chest like a serpent. Her fingers curled into fists, nails digging into the soft flesh of her palms, a faint sting reminding her of the physical world beyond the storm in her mind. She couldn’t afford to be weak now—not when she was so close. She had a mission, no—a destiny. This wasn’t just some petty theft; it was her chance to claim the power that was rightfully hers. The Trident was the key to everything. With it in her hands, she would ascend to the top of the food chain, where she belonged. No more obscurity, no more being a nobody. She would be feared, respected, and revered by all who dared cross her path.

But then there was Ruby—sweet, infuriating Ruby—and the thought of what this betrayal would do to her gnawed at Chelsea, eating away at the edges of her resolve like saltwater eroding stone.

Her chest constricted, a sensation that had nothing to do with the crushing weight of the ocean surrounding her. She closed her eyes, letting out a slow, trembling breath, the water pressing in from all sides as if the sea itself was aware of the conflict roiling inside her. Ruby trusted her. Ruby had opened herself up in ways Chelsea had never expected, offering a vulnerability that made everything harder. The girl wasn’t supposed to matter. She wasn’t supposed to mean anything. But somewhere along the line, Chelsea had started to care, and that was a weakness she could ill afford.

Once I take the Trident, Ruby will hate me.

The thought hung in her mind like a stone sinking into the dark abyss below. Ruby would see her as a liar, a traitor—someone who had manipulated her every step of the way. Chelsea could already picture the hurt in her eyes, the betrayal, the anger. And worst of all, she knew that she deserved it. The realization sent a bitter wave of guilt crashing over her, but she shoved it down, locking it away behind the steel wall she had carefully built around her heart.

It didn’t matter. It couldn’t matter. This was bigger than her feelings, bigger than Ruby.

But the weight of what was coming pressed heavily on her shoulders, an invisible burden she couldn't shake. She wanted—needed—the power the Trident would give her. It was her birthright, her path to dominance. But the price of that power was Ruby’s trust, and Chelsea hated that. Hated it more than anything.

But it has to be done, she told herself, her inner voice hardening, trying to drown out the doubt that threatened to consume her. This was the only way.

“I’ll keep her safe,” Chelsea muttered under her breath, her voice barely a whisper, swallowed by the water around her. As if speaking the words aloud would solidify the promise, make it real. It was a hollow comfort, but it was all she had to cling to. Ruby would hate her—there was no escaping that now—but Chelsea would make sure she was safe. She would protect her, even if it meant forcing her to stay out of harm’s way.

No one would touch Ruby. Not the others, not anyone who came after her. Chelsea would see to that. She’d push Ruby away if she had to, drive her to the sidelines where she couldn’t be hurt, no matter how much it tore at both of them. The image of Ruby’s furious, heartbroken face flashed in her mind, and Chelsea’s chest tightened again. Ruby would be devastated, shattered by the betrayal, and that thought hurt more than Chelsea had ever imagined.

But she could handle Ruby’s anger—could face her rage head-on—if it meant keeping her out of danger. Better to be hated by Ruby than to lose her to the chaos that was coming.

Because if Chelsea failed, if Ruby got caught in the crossfire, she knew she wouldn’t be able to live with herself. And for all the power in the world, for all the glory the Trident would bring, that was a price she wasn’t willing to pay.

With a sharp, frustrated flick of her tail, Chelsea surged upward, cutting through the cool depths of the ocean with practiced ease. The water parted around her, each stroke of her powerful fins propelling her closer to the surface until, with a sudden rush, she broke free into the open air. Droplets of saltwater cascaded from her body, the world above crashing into view all at once—the familiar coastline of Oceanside spreading before her like a cruel reminder of the double life she had been living.

The town was bathed in the soft, golden light of the late afternoon sun, the shore lined with the same modest buildings and rocky cliffs she had come to know so well. It was here, in this very place, that Chelsea had played the role of just another student, seamlessly blending in among the humans. She had laughed, joked, and spent countless hours with Ruby, pretending everything was normal, as though her heart wasn’t a battlefield of conflicting emotions.

But beneath the surface, she hated it. Hated the lies she had woven, hated herself for every half-truth and deception. Each moment of false camaraderie had been a dagger of guilt she had to carry with her, the weight of it pulling her deeper into her own internal abyss.

And then, as if the universe itself sought to torment her, she saw Ruby.

Perched on a rock near the beach, Ruby sat with her knees drawn up to her chest, her arms wrapped loosely around them as she gazed out over the water. The soft breeze played with strands of her hair, the sun casting a gentle glow over her skin. The sight of her was enough to make Chelsea’s heart twist painfully in her chest. Ruby looked peaceful—far more at peace than Chelsea felt. There was none of the usual nervous energy that often radiated from the girl, none of the skittishness that made her so endearing. Just a quiet stillness that seemed to settle into the very air around her.

I should leave. The thought cut through Chelsea’s mind like the sharp edge of a blade. She should turn around, dive back into the depths, and keep her distance. She was too close—dangerously close—and she knew it. Ruby had already wormed her way into her heart, and if Chelsea stayed, if she let herself get any closer, it would only make what she had to do that much harder.

But her resolve crumbled the moment she took a breath, the salty air filling her lungs, the waves gently pushing her toward the shore. Against her better judgment, Chelsea swam closer, her movements slow and deliberate, as if the water itself was reluctant to carry her into this moment. Every stroke felt heavier, laden with the weight of her guilt and the knowledge of what was coming.

Ruby noticed her immediately. Her head lifted, and her face lit up with that same, bright smile—so warm, so genuine, so completely undeserved. It was the kind of smile that always managed to stir something inside Chelsea, something unfamiliar and almost frightening. It made her feel… lighter, somehow, like the chains of her mission loosened just enough to let her breathe. But at the same time, it twisted the knife of guilt deeper into her chest, reminding her just how wrong this all was.

"Hey, Chelsea!" Ruby waved, her voice carrying across the distance between them, bright and unguarded. There was no suspicion, no wariness in her tone, only that easy warmth that seemed to radiate from her in every interaction. "What’s up? You’ve been kind of distant lately."

Chelsea hesitated, the weight of unspoken words pressing down on her like the depths of the ocean itself. How could she possibly explain what was really happening? How could she make Ruby understand that the girl sitting in front of her—the one who trusted her, who smiled at her with such open warmth—was the very person she was going to betray? Ruby had never meant to be anything more than a means to an end, a stepping stone toward Chelsea's true goal. But she couldn’t say that. Not yet.

Chelsea swallowed hard, forcing her mind back into the cold, calculating focus she had relied on for so long. "Just… thinking," she said finally, her voice far too casual for the knot of tension coiled in her chest. She tried to keep the tone light, forcing a smile to her lips—a smile that didn’t even come close to reaching her eyes. "You know, school and all that stuff."

The lie tasted bitter on her tongue, and she almost flinched when Ruby frowned, her brow furrowing slightly. Ruby was always so perceptive, always able to see beyond the surface of things. She tilted her head, studying Chelsea with that quiet, almost shy intensity she had. "You okay? You seem kinda… off."

Chelsea nearly laughed at the irony, but the sound got caught in her throat. Off? If only Ruby knew just how "off" she really was. If Ruby understood even half of what was swirling beneath Chelsea's carefully constructed mask, she’d run. She’d never look at her the same way again. The thought of that, of Ruby's smile fading into shock and hurt, made Chelsea’s heart clench painfully.

"Yeah, I’m fine," Chelsea forced the words out, but they felt thin, fragile. She clenched her fists beneath the surface of the water, her nails digging into her palms. "Just tired, I guess."

Ruby’s frown deepened, her blue eyes searching Chelsea’s face with that same concern, the same genuine compassion that made it so hard to stay detached. Ruby didn’t just see her—she really saw her. And that was terrifying. Chelsea had spent so long keeping people at arm's length, never letting them close enough to glimpse the truth. But Ruby had slipped past those defenses without even trying.

Ruby’s voice was soft, a gentle ripple against the quiet backdrop of the waves. "Well, if you ever need to talk, you know I’m here, right? I’m pretty good at listening."

Those simple words hit Chelsea like a tidal wave, crashing over her with a force she hadn’t expected. Ruby was offering her something real—something Chelsea didn’t deserve. The kindness in her voice, the sincerity in her offer… it twisted the knife of guilt even deeper, a sharp reminder of everything Chelsea was hiding. How could Ruby be so open, so willing to help, when Chelsea was the one planning to betray her? When Chelsea was actively lying to her face?

Chelsea’s chest tightened, her breath catching in her throat. She didn’t deserve that kind of compassion, not from Ruby. Not from anyone. Every moment she spent with her only made it worse—every smile, every kind word, every shared laugh felt like another layer of deception. She had come to Oceanside with a mission, with a singular purpose, but now everything felt tangled up in her growing attachment to Ruby, in the confusing swirl of emotions she didn’t know how to handle.

"I know," Chelsea murmured, her voice barely above a whisper. She couldn’t bring herself to look at Ruby’s face anymore, her gaze dropping to the sand that shifted beneath the lapping waves. She wanted to say more. To warn Ruby, to give her some kind of clue about the storm that was coming—the betrayal that was already in motion. But the words lodged in her throat, choking her, tangled up with her guilt and fear. How could she explain the impossible choice she was facing? How could she look Ruby in the eyes and tell her that everything had been a lie, when deep down, Chelsea wasn’t sure it was a lie anymore?

Ruby’s smile softened, the edges less bright but somehow warmer, more intimate. “We should hang out more. I miss seeing you around.” Her voice was light, hopeful, like she didn’t know the weight her words carried—like she didn’t know how they carved into Chelsea’s heart.

That smile—it was too much. Too genuine, too trusting. Chelsea could feel her pulse quickening, her heart thudding painfully in her chest, each beat a reminder of the impossible choice she had to make. She forced herself to look away, her gaze shifting to the horizon where the water met the sky, a blurred line that felt as distant as her own emotions. How could she do this? How could she go through with betraying someone who trusted her so completely, who looked at her like that?

The pull of destiny was strong, though. It tugged at her like an unseen current, something ancient and unyielding. She had been born for this, trained for this moment. To claim the Trident, to rise to power, to finally prove that she was worthy of the legacy that had been placed on her shoulders. The pressure of it was suffocating, yet familiar, a cold comfort that had always guided her.

But now, standing here in front of Ruby—feeling the warmth of her presence, the sincerity in her smile—it all felt wrong. The plan was still clear in her head, as sharp and precise as ever, but her heart was a chaotic mess. The girl she was supposed to betray had somehow become more than a pawn in the game, and that realization gnawed at Chelsea with every passing second.

“Yeah,” Chelsea whispered, the word barely audible as it left her lips. She wasn’t even sure if Ruby had heard her, but she couldn’t muster the strength to say it louder. Her mind was already elsewhere, spinning with the thoughts she couldn’t escape. How was she going to do this? How could she betray Ruby and still live with herself?

Her thoughts raced, darting from one possibility to another. She knew she couldn’t avoid the betrayal—that was inevitable. But there had to be a way to protect Ruby, to shield her from the worst of what was coming. Chelsea had to figure out how to keep her out of the battle, how to make sure that Ruby didn’t get caught in the crossfire. She couldn’t stop the storm that was about to hit, but she could do her best to steer Ruby clear of its path.

The guilt churned inside her, an ache that seemed to spread through every part of her. Chelsea clenched her fists, nails digging into her palms, grounding herself in the discomfort. She would betray Ruby—there was no avoiding that. She had to. Her destiny had been laid out long before she’d even met Ruby. But she would protect her, too. Somehow.

Even if Ruby hated her for it.

Especially if Ruby hated her for it.

The thought of Ruby’s bright blue eyes filling with anger and betrayal made Chelsea’s chest tighten. She imagined the moment when the truth would finally come out, when Ruby would see her for what she really was. A liar. A traitor. Someone who had played with her trust like it was nothing. The image of Ruby’s smile fading, replaced by hurt and fury, was enough to make Chelsea’s breath catch in her throat.

But even if Ruby hated her, even if she never spoke to her again, Chelsea would make sure she stayed safe. She couldn’t let Ruby get hurt. Not after everything.

“Chelsea?” Ruby’s voice broke through her thoughts, soft but tinged with concern. “You sure you’re okay? You’ve been kinda quiet.”

Chelsea blinked, snapping back to the present, forcing herself to meet Ruby’s gaze. The concern in Ruby’s eyes was genuine, and that only made it worse. Chelsea forced a smile, though it felt brittle, like it could shatter at any moment. “I’m fine,” she lied, her voice steady even though her heart was anything but. “Just a lot on my mind.”

Ruby didn’t look convinced, but she didn’t push. Instead, she offered another small smile, one that tugged at Chelsea’s heart even more painfully than before. “Well, whatever it is, I’m here if you need to talk about it. You don’t have to go through stuff alone.”

Chelsea nodded, though she knew she couldn’t take Ruby up on that offer. Not now. Not ever. She was already too far down the path she’d chosen, and there was no turning back. All she could do was keep moving forward, one step at a time, toward the inevitable.

Toward the moment when Ruby would hate her, and Chelsea would have to live with the consequences of her choices.

But until then, she would hold onto this moment—this brief, fleeting moment where Ruby still looked at her with kindness, where she was still someone Ruby trusted. And she would do whatever it took to keep Ruby safe, no matter the cost.

Even if that cost was Ruby’s love.