Pallet town,three years later,

The afternoon sun blanketed Pallet Town in a mellow golden haze, stretching long shadows from rooftops and trees. The quiet breeze rustled the wind chimes hanging outside Delia's cozy cottage, singing soft notes of home.

Inside, the house was a mix of frantic cleaning, sizzling food prep, and the unmistakable sound of tiny feet darting around like a hyperactive Pikachu.

"Ash, don't track mud across the clean floor!" Delia called, brandishing a dish towel like a fencing saber.

"I'm not, I'm skidding! That's different!" Ash chirped, skidding again—this time into the couch, which yelped as a hidden Meowth shot out from under a cushion.

Delia sighed. "Honestly..."

"Is he gonna be here soon? Like soon-soon?" Ash asked, tugging at the collar of his Poké Ball-patterned shirt. "Do you think he'll bring me something? Like, like a regional souvenir? Or a Growlithe? Wait—do you think he's evolved his Growlithe? What's its name again—Roar? Blaze? Rambo?"

"Roy, honey. His name is Roy," Delia said with a warm smile, tying her apron behind her. "And yes, I imagine he's grown a lot, just like you have."

Ash paused dramatically. "You think he'll notice I'm taller?"

Delia chuckled. "If not, I'm sure you'll remind him. Repeatedly."

Outside, Daisy Oak darted up the path to the house, panting and breathless. "He's coming up the hill! I saw him from Grandpa's lab! And—and Roy's with him!"

Ash's eyes lit up. "Did he evolve?!"

Daisy nodded, grinning. "He's HUGE. And—he's shiny! Like, really shiny! I didn't even know Arcanine could look that cool!"

Ash gasped. "WHAT?!"

There was a flurry of movement. Delia adjusted the flowers on the table. Daisy scrambled to fix the photo frame Theo had left tilted two years ago. Ash dashed to the door, then darted back to the couch, then to the window.

Then they heard it: steady footsteps crunching on the gravel path.

Ash held his breath.

The door opened with a faint creak.

And there he was.

Theo stood in the doorway, a bit taller, shoulders broader, skin slightly tanned from travel. His jacket hung open, his backpack was well-worn, and beside him padded a creature that stopped time for a moment.

Roy, once the energetic Growlithe pup, now stood a full head taller than the average Arcanine. His sleek white-gold fur shimmered with a pearlescent sheen under the light, like sunlight reflected off fresh snow. The deep-blue streaks along his mane caught the glow just right, as though his flames had turned into royal banners.

Even his eyes, sharp and intelligent, had a quiet nobility about them.

He looked like a legendary steed out of a myth.

Ash's jaw hit the floor. "That's not a Pokémon. That's a fire dragon god in disguise."

Roy gave a low, calm huff of amusement, nostrils flaring ever so slightly, and dipped his head graciously toward the room.

Theo scratched the back of his neck, grinning. "Hey. I'm home."

Ash stared.

Then: "YOU LOOK LIKE A COOL OLDER VILLAIN-WHO-TURNS-GOOD-IN-EPISODE-37!"

Theo blinked. "Uh. Thanks?"

Ash barreled into him with the force of a Quick Attack. "You grew your hair! You look taller! Did Roy learn Hyper Beam? Does he talk now? Can he fly?!"

Theo laughed, hugging him back. "He still barks, Ash. But he does do a pretty mean Flamethrower."

Delia walked up and pulled him into a warm, motherly hug. "Welcome back, sweetheart."

"Thanks, Mom," Theo said, his voice quieter, but full.

Roy let out a soft rumble and lowered his head, nuzzling Ash gently with his massive snout.

Ash squealed. "ROY REMEMBERED ME! He's like a FLUFFY LEGENDARY!"

"Of course he did," Theo said, ruffling his brother's hair. "You're hard to forget."

From the kitchen, Daisy yelled, "Wait till he sees the cake!"

"Wait, there's cake?" Theo raised an eyebrow.

Delia smiled. "Of course. What's a homecoming without cake?"

Theo looked around the house—the people, the smell of fresh bread and something slightly burnt in the oven, Roy quietly curling up by the window—and felt the warmth settle back into his bones.

After all the wild routes, cold inns, and rainy campfires—this was still home.

Later in the ketchum household living room,

"C'mon, Theo! Just one peek!" Ash pleaded, bouncing on the balls of his feet like he had a caffeine IV.

"Pleaseee!" Daisy chimed in, clasping her hands dramatically. "You've been gone for three years, and all we've seen is Roy—who, don't get me wrong, is an eleven-out-of-ten walking fire cloud, but still!"

Gary leaned against the doorframe, trying (and failing) to look unimpressed. "Yeah, I mean, not that I'm dying to see your team or anything... but I am. A little. Maybe."

Theo, standing with a teacup in one hand and his travel cloak now draped over the back of a chair, offered them a sly grin. "And ruin all the suspense in one night? I've barely walked in the door."

Ash pouted. "But—"

"No buts," Theo said, gently cutting him off. "You'll see some of them tomorrow. Professor Oak wants me to do a proper introduction at the ranch, and you lot are all invited, obviously."

Daisy groaned theatrically. "You're the worst. Keeping secrets and looking cool while doing it."

Gary squinted. "Bet he's got something weird. Like a Steelix. Or—wait, a Dragonair that evolved backward or something."

"Or a Gyarados that reads poetry!" Ash added, entirely serious.

Roy gave a soft chuff and tilted his head like even he found that idea strange.

As if responding to the attention, Roy sprawled out like a fluffy carpet, tongue hanging lazily from the side of his mouth as the trio enthusiastically piled around him.

Ash began gently tugging at his oversized mane. "You've definitely gotten floofier…"

Daisy was brushing a comb through his tail she'd retrieved from her bag with the speed of someone who'd been preparing for this moment for weeks. "You're getting sparkles in this coat, Roy. Like, full-on glitter glam."

Gary knelt beside them, eyes narrowed in analytical fascination. "His symmetry is unreal. And these muscle layers… did you train for this, or is it just genetics?"

Roy sneezed a small puff of smoke.

"I'll take that as both," Gary muttered.

With the three occupied, Theo stepped into the kitchen, where Delia was gently wiping down the counter and stealing glances his way.

"Some things never change," he said softly, watching Ash try to braid Roy's tail with zero experience and boundless confidence.

Delia looked up, her smile warm and knowing. "He missed you. They all did."

Theo gave a quiet nod and sipped his tea. "It's… strange being back. Feels the same. And different."

She leaned against the counter beside him. "Well, things have changed. Ash has gotten louder—if you can believe that—and Gary keeps dragging Daisy into 'research experiments' that involve breaking things in the backyard."

He chuckled. "Somehow, that tracks."

There was a pause. A comfortable one. The kind that only came from years of quiet understanding.

"You've grown so much," Delia said finally, softer now. "Not just taller. There's a calm in your eyes that wasn't there before."

Theo didn't answer right away. His gaze drifted toward Roy, who was now tolerating being adorned with three scrunchies and what appeared to be a blanket cape. He exhaled through his nose, a wry smile tugging at the edge of his lips.

"I've seen a lot. Learned a lot," he said. "But… it's good to be home."

Delia's hand found his, giving it a gentle squeeze. "It's good to have you back."

Outside, a crash and a loud "THAT WASN'T MY FAULT!" echoed from the living room.

Theo winced. "I should go make sure Roy doesn't accidentally torch the couch."

Delia chuckled. "It's fine. He's part of the family too now."

As Theo turned to go, she called out, "And tomorrow, after the ranch… I want to hear about the rest of your team."

He glanced back with a grin, his eyes glinting just a little. "I'll think about it."

Next day,

The sun was barely peeking over the hills when Theo arrived at the ranch. Morning mist still clung to the paddocks, and the familiar scent of earth, grass, and Pokémon greeted him like an old friend. Roy trotted beside him, his large paws padding quietly over the worn dirt path. A pair of Pidgey fluttered past overhead.

The main lab building came into view, its windows glowing gently from within.

Theo let himself in through the side door, the one assistants always used.

"Early as always," came a familiar voice from the other end of the hall.

Professor Oak stood at the kitchen table, stirring a cup of tea, still in his robe and slippers. A plate of toast sat untouched beside him, the smell of jam and butter wafting faintly.

"Some habits never die," Theo said with a grin.

Oak chuckled, waving him in. "You've been gone three years, and yet I still half-expected you to show up at sunrise."

Theo shrugged off his cloak and took a seat. "Wanted to talk before everyone else shows up."

Roy settled near the fireplace, his luxurious mane glowing golden in the firelight.

Oak raised a brow. "About the conference?"

Theo nodded. "Indigo Plateau. I've earned my eight badges."

The professor's eyes lit up. "Kanto circuit. Good. Solid gyms, tested tradition. How are you feeling?"

Theo exhaled. "Focused. Ready, I think."

Oak smiled into his tea. "You've always been precise with your words. You never speak unless you've thought through the outcome."

Theo offered a small smile. "And yet I'm still nervous."

"That's healthy. It means you care." Oak leaned back. "You've grown, Theo. Not just in strength. But as a trainer."

Theo's eyes flicked toward the framed photograph on the wall: Oak, younger, victorious, flanked by his old team. Roy's father stood proudly in the image—Arcanine, battle-scarred and noble.

"I've been meaning to ask you something," Theo said, voice softer now.

"Oh?"

Theo stood slowly. Roy rose with him.

"I want to challenge you."

Oak blinked. "Me?"

Theo nodded. "One-on-one. You don't have to use your strongest. Just… a battle. Teacher and student."

Oak studied him for a moment, then smiled with quiet pride. "It's been a while since anyone's asked me that."

"I figured," Theo said. "But it feels right. Before I take on the Plateau… I want to measure myself. Against someone who shaped the world I'm stepping into."

Oak finished his tea and stood up, his voice a little warmer now. "Then meet me at the training field. Give me fifteen minutes to change and loosen these old joints."

Theo gave a small bow. "I'll be there."

Roy let out a low, excited woof, fire sparking faintly between his fangs.

As the morning mist began to lift from the fields, so did the quiet tension in the air—one trainer ready to ascend, the other ready to test him.

The sun was high now, casting a golden sheen over the ranch's main training field. The air shimmered faintly with heat, stirred by anticipation rather than weather.

A small crowd had gathered. Assistants paused their morning routines. Delia stood beneath the shade of a tree, her hands resting gently on Ash's shoulders. Daisy sat cross-legged on the fence, Gary beside her, both wide-eyed with curiosity. Even the Pokémon in nearby paddocks watched with unusual stillness.

Across the field, Theo stood tall, his posture calm yet alert. Beside him, Roy, his majestic shiny Arcanine, stood proudly—his golden-white fur rippling in the breeze, his gaze focused, almost reverent.

The far gate creaked open.

Professor Oak stepped onto the field, now in his old trainer jacket. At his side walked a powerful, battle-hardened Arcanine—scarred in places, but graceful with age. Her fur, a deeper burnished red with flecks of gray, shimmered in the light. Her eyes locked instantly with Roy's.

Roy let out a deep, excited bark, tail wagging once before he crouched slightly—eager.

"So," Oak said, placing a hand briefly on his Arcanine's shoulder, "a family duel."

Theo dipped his head in respect. "If she'll indulge us."

Oak smiled, a mixture of nostalgia and pride in his eyes. "She's been retired a long time, but I think she's been waiting for this."

The two trainers took their positions.

"Single battle," Oak announced. "No time limit."

"Agreed," Theo replied.

A hush fell over the onlookers.

"Begin!"

Oak started bold. "Flare Blitz, forward and feint left!"

His Arcanine surged, flame trailing from her body like a meteor in motion.

Theo didn't flinch. "Evasive spiral. Mirror edge."

Roy twisted into a tight arc, narrowly dodging the rush. A tail flick. Dust kicked up. The older Arcanine adjusted mid-flight, landing heavily and whirling back.

The two exchanged blow after blow, claws and teeth flashing, flame colliding with flame. Roy was faster, younger. But Oak's Arcanine was smarter—seasoned, unpredictable.

"She's reading him," Daisy muttered. "He's going to need something more."

Oak continued with a command.

"Extreme Speed!"

His Arcanine vanished in a blur of motion, striking Roy with a forceful blow before darting back. The younger Arcanine skidded but regained footing swiftly.

"Recoil with Flame Charge!" Theo called.

Roy burst into flame and lunged forward, slamming into his mother. The impact shook the earth, the fire trailing behind him like a meteor tail.

The crowd gasped, impressed.

Back and forth they went. Moves clashed, canceled, echoed each other.

Thunder Fang versus Crunch.

Flamethrower versus Fire Spin.

Double Team illusions disrupting Wild Charge chases.

Each movement from Roy was graceful yet calculated — like a practiced martial artist testing his opponent's rhythm. But Oak's Arcanine was seasoned, battle-scarred, and sharp. She knew how to wait, how to bait, how to make a younger opponent overextend.

And ten minutes in, that's what she did.

Roy launched forward with a blazing Flame Blitz, only for Oak's Arcanine to sidestep at the last second and retaliate with a Reversal, striking him cleanly in the ribs and sending him sprawling.

"Roy!" Daisy and the kid's shouted, rising halfway.

But Theo didn't flinch.

Roy was panting now. Slower. Less stable.

Samuel Oak, ever the wise professor, offered a nod of respect. "He's strong, Theo. You trained him well. But he's still not—"

Snap.

A sharp sound echoed across the field. Oak paused. Roy's ears twitched.

Snap. Snap.

Theo walked a few steps forward, his fingers dancing.

Roy's head lifted. His eyes narrowed. The flames around him began to change — not in volume, but in intensity. Like they were compressing. Tighter. Sharper. Focused not around him — but beyond him.

"Let's show them the other half of our training," Theo said quietly. "Code—Ignition."

Snap.

The air behind Oak's Arcanine ignited, a soundless flash that caused her to recoil instinctively.

Snap-snap.

To her left, another burst.

Snap.

A flicker directly above her.

"What is that!?" Gary gawked.

Daisy whispered, "He's… setting controlled explosions mid-air? But there's no fireball. No arc. Just—bang."

"That's not a move. That's choreography," muttered one assistant.

Oak's eyes widened. "You've weaponized atmospheric ignition."

Theo snapped twice more, and Roy moved with them, using each ignition as a signal and as cover. It was like fighting someone who could bend the battlefield at will.

"He's not attacking with flames," whispered Delia. "He's directing them."

Oak's Arcanine lunged again, trying to predict Roy's movement.

Snap.

Snap.

SNAP.

A pattern,but there was none just pure unadultared chaos.

The ground beneath her feet exploded in a silent bloom, just enough to make her leap. But as she soared—

Snap.

A sudden ignition right in front of her muzzle disoriented her, smoke veiling her sight.

And Roy came through it, not with a dramatic leap, but with eerie calm, launching a searing, pinpointed Fire Fang at her exposed flank.

The elder Arcanine landed hard. She rose, but her legs shook. Samuel raised a hand.

"That's enough."

Silence fell like snowfall across the ranch. Then, a low wave of murmurs spread through the crowd — hushed, reverent, incredulous.

Ash and Gary stared wide-eyed, neither knowing what to say.

"That… that wasn't even a move. That was like teleporting fire," Gary said, half breathless.

"He made it appear without warning," Daisy murmured. "Not thrown. Not aimed. Just—there."

A few of Professor Oak's senior research assistants were still stiff, eyes fixed on the spots where the spontaneous ignitions had appeared. One of them finally whispered, "If he miscalculates even a little…"

Oak stood beside his old Arcanine, gently running a hand over her singed mane. Despite her loss, she huffed proudly, nuzzling Roy in a sign of maternal approval.

"What you've made, Theo," Oak said slowly, "isn't just a technique. It's a new discipline. A battlefield philosophy."

Theo gave a small shrug, feeding Roy a strip of dried kelpsy meat. "We call it the Ignition Code. But… we're not done."

Oak turned to him, brow raised. "Not done?"

Theo looked toward the horizon.

"That was version three. Still working on refining the range and pattern complexity. Roy gets it, but sometimes the conditions don't. Weather. Humidity. Air density. I've barely begun mapping the counters."

He paused, then added with quiet seriousness:

"What you saw today — that wasn't the full thing. Just a glimpse."

The silence returned, but this time it was different.

The kind that settles in your bones.

Gary and Daisy, for all their teasing and energy, now stared at him as if he were something unfamiliar. Not dangerous — but untouchable.

"So you're saying…" one of the younger assistants muttered, "that this was the incomplete version?"

Professor Oak's face was contemplative but proud of what theo has achieved.

Delia, arms crossed but eyes sharp, gave Theo a small, knowing look — somewhere between pride and concern. She had always known he was different. But now she was starting to realize just how much.

Behind him, Roy sat tall and watchful, his massive frame outlined in the fading glow of sunset — a majestic, shining Arcanine, barely held in check by a voice and a series of snaps.

And all those who had watched… couldn't help but wonder:

If this was just the beginning, what kind of firestorm would the world face when Theo finally perfected it?