Dive Ball Rage Splash (Nessa Gyaradosgirl TF)

Warning: Dark

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Water. Endless, glassy water.

Nessa floated on her back, arms stretched out, the sun glowing dimly above her in a hazy blue sky. No clouds. No birds. No land. No sounds but the soft lap of waves against her body, and the gentle thud of her heartbeat in her ears.

"Okay... this is weird."

She shifted upright, treading water slowly, long limbs moving in calm, practiced strokes. Still no shoreline. No docks. No islands. Nothing. Just the gentle pulse of the ocean in all directions.

A chill crawled up her spine, not from the water, it was perfectly warm, but from the creeping sense that something wasn’t right.

“How… Did I even get here?”

Her brow furrowed as she tried to recall the last thing she remembered.

Flashback: Hulbury Gym

The sound of battle still echoed faintly in her mind: the clash of water, the cheer of the crowd, the glint of determination in her opponent’s eyes. A young trainer, maybe fifteen, with that unmistakable spark of greatness in him. He had challenged her with confidence, and he had earned every moment of that match.

She smiled even now thinking about it.

"You’ve got talent, kid." she had said, handing over the Water Badge, her pride still intact despite the loss.

But then, that weird moment afterward.

The kid had lingered, cheeks red, but eyes steady.
“Would you… like to join my Pokeharem?”

Nessa had blinked. "Your what?"

He had chuckled nervously, like it was half-joke, half-dare. She laughed it off, waving a hand. “Cute, but no thanks. I’ve got my own currents to ride.”

Still, he seemed unfazed. He just nodded and pulled out a Dive Ball.

"Then take this anyway," he’d said. “It suits you.”

She had accepted it with a shrug. A little strange, maybe, but trainers were a strange bunch. She’d clipped it to her belt and walked away toward the beach.

And that was when…

Present – Back in the water

Nessa shivered, not from cold, but from that fuzzy blank spot in her memory.

The Dive Ball.

She looked down at her hip, except it wasn’t there anymore. No belt, no pokéballs. Just her swimsuit and the water.

She turned slowly in place, scanning the endless sea again.

"Okay," she muttered to herself with a breathless little laugh, "If this is what the inside of a Dive Ball looks like, then I’m definitely leaving a one-star review."

But there was no echo, no response.

Just the slow rise and fall of gentle waves.

She kicked lightly beneath the surface, but a strange sensation tugged at her ankle, like seaweed brushing her skin.

Nessa looked down quickly, half-expecting to see seaweed or a Tentacool brushing her leg. But the water below was clear, too clear. No fish, no kelp, just her own dark legs disappearing into the blue.

Yet the feeling, like something pulling at her calves, didn’t stop.

She frowned. “What the—?”

It was starting to burn, tingle, and stretch.

With a sharp breath, she reached down instinctively, running her hand along her thigh, and froze.

Her skin didn’t feel like skin.

It was rougher, almost textured, slick, like scales. Her fingers brushed over ridges that hadn’t been there before, and as she pressed harder, she realized:

“That’s not right.”

Her legs were pressed together, almost unnaturally. It was like something was gluing them, fusing them from thigh to ankle into one solid, shifting limb. Beneath her touch, she could feel them… extending.

Not just stuck, stretching.

Growing.

“W-what the heck!?”

She recoiled, panic rising, but then she caught a glimpse of her right hand.

Her fingers, the ones that touched her leg. They were changing too.

Webbing now traced between them. The nails had hardened into dark, pointed claws. Her knuckles ached like something beneath them was trying to push out, to reshape them.

She held her hand up in front of her face, turning it over, watching in real-time as her joints lengthened and her skin hardened, the color darkening into deep navy blue.

“Oh no. No, no, no! What is this?!”

Her body, all of it, was changing beneath the surface. She could feel the weight shifting in her hips, the drag growing stronger. Her core twisted as something inside seemed to uncoil and stretch outward, like her spine was lengthening, vertebrae by vertebrae.

The pull at her legs was no longer a sensation from outside, it was coming from within, like her body had decided to grow downward, elongating into something new. Something massive.

She kicked in the water to stay afloat, but it was harder now, her lower half wasn’t kicking anymore. It was waving, like a tail. A thick, serpentine motion that wasn’t her doing. Not entirely.

Her breaths came faster, chest rising and falling. Every breath brought with it a new sensation: a spine tingling beneath her shoulder blades, a strange fluttering at her ears, and her throat beginning to tighten.

“My body, what’s happening to my—?”

But she couldn’t finish the thought.

Because her voice was already starting to sound different.

Nessa’s chest heaved as the changes surged through her. Her breath hitched, her body no longer floating so much as coiling in the water, moving with heavy, sinuous force.

She tried to speak, but what came out wasn’t words.

“Grrrhhh…”

Her throat burned—like her voice had turned to smoke and gravel. She coughed, tried again, straining to say anything coherent.

“Wh…what… is… h-happening—?”

But the sound broke halfway, garbled and deep.

“Gyarrrhh—!”

Her own voice startled her.

That wasn’t human. That wasn’t her.

She clutched her arms tight to her chest, feeling the roughness of her skin, the firm ridges of scales now creeping past her abdomen, curling across her ribs, up her shoulders. Her muscles twitched, stretching, pulsing with foreign energy. It wasn’t just change, it was growth.

Her body was expanding.

Every breath made her feel bigger, heavier, as though the ocean was suddenly too small to contain her.

“Gyarrrr…ghhhhhh—!”

A deep growl shuddered from her throat again, and this time she didn’t even try to stop it.

That’s when she saw it.

Out in the shimmering distance, a boat.

Something that wasn’t ocean. Something real.

Her eyes locked onto it like a starving predator spotting prey. Without thinking, without deciding, she swam toward it, each movement sending a shockwave through the sea. Her massive tail, yes, it was a tail now, lashed behind her, propelling her forward in long, aggressive strokes.

And with every meter she closed, the anger grew.

A roaring tide in her head.

Why was she angry? She didn’t know. But the feeling swelled like a storm, a fury she couldn’t reason with. She could feel her body swelling too, as if the emotion itself was feeding the transformation. Her spine cracked longer. Her shoulders widened. The sea churned behind her in her wake.

Her ears stretched, pulled into long, sharp fins that caught the wind as she broke the surface.

Her arms clawed through the waves, her hands no longer quite hands. She hissed, low and guttural. Her jaw ached as her teeth sharpened behind her lips.

And yet—

No thoughts.
No hesitation.
Only one word echoed in her mind.

“Sink.”

The boat was small. Pathetic. It floated on her ocean.

She surged upward, her massive form rising out of the sea like a leviathan reborn. The boat—once huge in the distance—now seemed tiny, fragile. She was nearly twice its size.

Her tail thrashed behind her, coiling like a whip, spraying water high into the air.

She opened her mouth, no words now, only the roar.

The cry of something no longer human.

“GYARRRRRRRRRRR!!!”

The boat rocked violently as Nessa’s enormous body surged around it.

Her tail, now easily thicker than any tree trunk, coiled around the vessel with terrifying precision. With one flex, she could crack the hull, drown them all, and make the sea hers again. 

She could imagine it right now. How the humans aboard would scream. How the humans aboard would drop to their knees. How others would freeze in sheer disbelief, staring up at the colossal creature that once had a human name. 

But none of that happened. There were no humans on that ship… which made Nessa just even angrier.

Well she wasn’t really Nessa now anymore. Not really.

She was the ocean’s wrath made flesh. A deep, hot rage pulsed in her blood, her mind chanting one word over and over like a drumbeat.

“Sink. Sink. Sink.”

Her muscles tensed. Her claws dug into the railings. The creak of wood was already splitting beneath her grip—

“Stop.”

The voice cut through her like a blade of light in darkness.

Everything in her locked up.

Her tail froze mid-squeeze. Her breath hitched. Her glowing eyes, once wild and full of rage, snapped toward the source.

There. Standing calmly near the ship’s bow.

Him.

The boy from her gym. That strange, soft-spoken trainer with a spark in his eyes. The one who gave her the Dive Ball.

And now, he wasn’t yelling. He wasn’t afraid.

He was just… waiting.

“Let go.”

Nessa let go.

She didn’t think. She didn’t reason. Her body simply obeyed.

Her tail uncoiled slowly, slipping away from the ship like a retreating tide. Her head remained high above the deck, fins twitching, eyes never leaving him.

Inside, her monstrous heart thundered—but not with rage anymore. With something else. Something… warm.

Confusing.

Addictive.

He stepped closer to the edge of the deck, looking up at her massive face.

“You are part of my Pokeharem Gyarados.”

The words didn’t make sense.
And yet… they made perfect sense.

“And my Pokeharem girls…” he continued, voice firm but affectionate,
“…are good girls that follow orders. Right?”

Nessa’s entire body shuddered.

The word—“good girl”—sparked something deep in her monstrous brain. A command far more powerful than instinct.
Something primal and sweet.
Obedience, devotion.

Her lips parted, fangs glinting—but instead of a roar, she released a soft, shaky breath.

“…gyarrrh…”

That was all she could manage. But it sounded different now. No longer defiant.

Almost adoring.

The boy smiled, confident but not cruel. “That’s better.”

He raised a hand and pointed to the helm.

“Now then, Nessa. My Gyarados girl. Show everyone what a good girl you are… and pull this ship to shore.”

No hesitation.

Nessa’s fins twitched in joy. Her eyes glowed with quiet bliss. The rage was gone. The confusion, the fear—all of it melted into something simple, something beautiful.

She turned silently in the water, gently hooked her claws into the edge of the bow, and with one powerful sweep of her mighty tail—

She pulled.

The ship jolted, then glided forward like it had never known wind or sail. Behind it, the monstrous sea serpent moved with grace and purpose.

A dragon in love with her leash.

She didn’t care who saw.

She didn’t care what she used to be.

She had a master now.

And that was all she needed.