Four years had passed since Arlan Kurogane quietly rewrote the rules of genius.
He had grown taller, sharper, and undeniably striking. His black hair had developed a natural soft wave, his eyes held a calm golden glow whenever his quirk tingled beneath the surface, and his voice—
His voice had become something the world had never heard before.
But outside the walls of his home…
Nobody knew that.
To the world, Arlan Kurogane was simply:
A wealthy young scholar
A prodigious inventor
A top-tier singer in training
Best friend to Momo Yaoyorozu
Nothing more.
His true quirk power—
Half of All Might's strength, demon-hunter combat instinct, weaponized music—
remained locked behind layers of composure.
He didn't need to show it.
Not yet.
⸻
Morning in the Akari Household
The alarm did not wake Arlan.
Because someone else was already there.
He opened his eyes, sensing warmth beside him. A long curtain of black hair brushed against his cheek. A slender hand was curled on his arm. And the owner of that hand held onto him as if someone might steal him in his sleep.
"Momo…" Arlan whispered.
She didn't move.
"Hey," he tried again.
Nothing.
Finally, he reached out and gently poked her cheek.
Her eyes opened instantly.
Sharp. Aware. Focused only on him.
"…Good morning, Arlan," she whispered.
"Momo, you're in my bed again."
She blinked once.
"So?"
Arlan exhaled.
Fourteen-year-old Momo Yaoyorozu was elegance incarnate—long hair, soft eyes, gentle smile… and a possessiveness that only grew stronger with age.
Her parents adored Arlan like a second son. His parents adored Momo like a daughter.
Which meant her climbing through his balcony at 5 a.m. was treated as normal.
Not that Arlan minded.
"Did you sleep well?" she asked, leaning slightly closer.
"I did," he admitted.
Her eyes softened.
"Good. You have a big day today."
He did.
His debut performance.
The one arranged secretly by Areia Records, the multi-billion music label owned by both their families in partnership. It would be a "small stage appearance"… but everyone knew the truth:
Once he stepped onto a stage, the entertainment industry would explode.
And Momo knew it too.
Her fingers curled tighter into his sleeve.
She didn't say anything, but her eyes told him clearly:
"Don't let anyone take you from me."
⸻
Preparing for the Debut
After breakfast, the house filled with activity.
Stylists were setting up equipment.
Technicians were doing mic tests.
Producers were pacing with tablets.
Arlan stood calmly in his room, buttoning the last piece of his dark performance jacket.
He didn't need makeup.
He didn't need vocal warm-ups.
He didn't need dancing lessons.
His quirk did it all.
Every song.
Every dance.
Every performance nuance.
He was born for this.
Or rather… he wished for this.
There was a soft knock on the door.
"Come in," Arlan said.
Momo entered, dressed in a beautifully simple white dress, her hair tied neatly behind her back. She looked composed—but Arlan could see the tension. The worry.
The protectiveness.
She walked straight to him without hesitation and fixed his collar.
"You look perfect," she murmured.
Arlan raised an eyebrow. "You fixed it half an inch."
"Yes. Because it was off half an inch."
Their routine.
He let her fuss over him for a moment.
Then she stepped back and looked at him with quiet intensity.
"Arlan," she said softly, "the moment you step on that stage… people will fall for you."
Arlan blinked. "Fall for my voice, maybe. Not me."
Momo shook her head.
"No. You don't understand."
She moved closer, her voice barely above a whisper.
"You're beautiful. You're brilliant. You're talented. You don't just sing—you shine."
Her eyes were trembling slightly.
"And when other people see it… I don't know what I'll do if someone tries to take you away."
Arlan placed a hand on her head gently.
"Momo. No one is taking me anywhere."
She closed her eyes, leaning into his touch.
"Promise?"
"I promise."
⸻
The Secret Behind Today
The debut concert location was a private theater, originally meant for an audience of 400.
But as Arlan stepped into the backstage corridor…
There were thousands.
Crowds had gathered outside the building.
Drones hovered overhead.
Camera crews fought for angles.
Arlan blinked. "…Why are there news vans?"
A manager rushed to him. "Ah—yes—so, funny story, Arlan-kun—your teaser clip went viral overnight!"
"What teaser clip?"
"The one you recorded humming yesterday! Someone leaked it!"
Arlan stared.
Momo's aura darkened like a black hole forming.
"Who," she asked in a quiet, terrifying voice, "leaked it?"
The manager froze. "W-we're still investigating—"
Arlan stepped in.
"Momo. It's fine."
"No," she said firmly. "It absolutely is not."
Arlan sighed.
This was their world now.
⸻
Backstage
The theater lights dimmed.
Crowds roared from outside, inside, and across streaming platforms.
Arlan walked to the center of the stage entrance.
Not nervous.
Not shaky.
Because his quirk pulsed inside him like a heartbeat.
Every fiber of his body was ready.
A soft hand slipped into his.
He turned.
Momo squeezed tightly.
"Arlan," she whispered, "I'll be watching from the front row. So…"
Her cheeks reddened slightly.
"…sing for me too."
Arlan smiled.
"I will."
He stepped forward.
The stage curtains lifted.
A sea of lights, faces, cameras—
Then silence.
Arlan inhaled.
And he sang the first note.
⸻
The World Freezes
The quirk activated instantly.
Electric blue light burst around him like shattered stars.
A full orchestra sounded from nowhere.
The stage floor lit up with radiant musical symbols.
The crowd gasped—
Phones dropped—
People froze mid-breath.
It wasn't just singing.
It was divine.
Every note he sang flooded the theater with warmth, power, and emotion.
His voice layered itself with perfect harmonics.
A bass beat echoed through their hearts.
A choir rose from the air around him.
Every soul in the room felt like he was singing directly to them.
And one person—
Momo Yaoyorozu—
felt like he was singing only for her.
Her eyes glowed like fire.
Because he wasn't just becoming a star—
He was becoming untouchable.
⸻
When the song ended…
Silence.
Then—
An eruption of screams.
A crash of applause.
Tears.
Shouts.
Absolute chaos.
Arlan Kurogane had just become the most powerful new voice on Earth.
For a moment, the world existed only inside the theater.
But outside…
The city was beginning to tear itself apart.
Sirens wailed.
Security barriers slammed shut.
Civilians fled through the streets.
A massive, mutated humanoid creature tore through the district—an escaped bio-experiment from an underground villain syndicate. Skin like cracked obsidian. Bone armor jutting from its shoulders. Eyes glowing with feral hatred.
A Class-B Demon Mutant.
And it was running in one direction only—
Straight toward the theater.
Drawn by the vibrations.
Drawn by Arlan's voice.
⸻
Back Inside…
Arlan's note ended.
The crowd exploded in applause so loud it shook the floor.
But Momo didn't cheer.
She froze.
Her enhanced instincts screamed.
Her body tensed.
Her eyes darted toward the backstage exit.
Something was wrong.
Arlan felt it too.
His quirk hummed softly at the base of his spine—
A sixth sense, a subtle vibration, like a warning.
He took a step back from the spotlight.
His earpiece buzzed to life with the panicked voice of the security director:
"Arlan—do NOT move—repeat—do NOT leave the stage—there's a hostile creature approaching—evacuating audience now—!!"
Momo stood instantly, pushing through security.
Arlan turned toward the side hallway—
And the building shook.
BOOM!
Lights flickered.
Dust fell from the ceiling.
People screamed and ducked.
The reinforcement team rushed toward the exit—
CRASH!!!
The monster tore through the side wall like paper.
Screams exploded from the audience.
The demon mutant roared, a distorted, inhuman sound that vibrated through the entire structure. Its red glowing eyes locked immediately on the boy standing near the stage entrance.
On the singer.
On Arlan.
Its voice screeched like grinding metal—
"—SSSINGERRR—"
Arlan's eyes narrowed.
Momo…
She was at the edge of the stage, breath shaking.
She saw him.
He saw her.
Her lips trembled.
"…don't," she whispered.
⸻
Arlan steps forward
He wasn't supposed to.
He wasn't licensed.
He wasn't registered.
He wasn't officially a hero.
He was fourteen.
But Arlan was also—
A genius.
A fighter.
A powerhouse with half of All Might's strength.
And this monster threatened Momo.
That alone was enough.
He stepped off the stage.
Momo grabbed his wrist with a shaking hand.
"Arlan—please—you're not supposed to—!"
Her voice cracked.
He turned back, squeezing her hand gently.
"Momo… they'll get hurt. You'll get hurt."
Her eyes widened.
"I won't let that happen."
She shook her head hard, tears forming.
"You promised… Arlan… you promised you'd always come back."
He smiled softly.
"And I will."
Then he slipped from her grip.
Momo reached out again—
But he was already walking forward.
⸻
Face to Face with the Monster
The demon mutant roared again and smashed a support beam. Dust filled the air. Civilians scrambled for the exits.
Security yelled:
"Kid! GET BACK!!"
But Arlan didn't even slow down.
He rolled his shoulders.
He inhaled deeply.
And he began to sing.
Softly.
Calmly.
A single note.
The music burst out instantly.
WHOOOM.
A circular wave of shimmering blue light erupted around him like a shockwave.
The demon staggered back in confusion.
Arlan's eyes glowed gold as he continued singing—
🎵 "Feel the wind begin to rise…
Hear the thunder in my voice…" 🎵
Every note amplified into raw force.
The ground beneath him vibrated with rhythm.
Floating musical notes formed around his body like glowing weapons.
The aura of a superstar…
No—
The aura of a hero.
Gasps echoed through the theater.
"What kind of quirk is that!?"
"He's… he's glowing!"
"He's so strong—!"
"That kid… he's overpowering a mutant!"
Momo, watching with trembling lips, whispered:
"…Arlan…"
⸻
The Fight Begins
The monster lunged with a massive fist—
Arlan sidestepped with a dancer's fluid grace, still singing, the music syncing with his movements.
He spun once—
And delivered a sonic-charged kick to the creature's ribs.
BOOOOM!!
The demon slammed into the opposite wall.
The audience screamed.
Security froze.
Momo clutched her chest, breath quickening.
Because Arlan wasn't fighting like a singer.
He fought like a legend.
Every punch landed with explosive rhythm.
Every step timed perfectly to the beat.
Every breath synchronized with his quirk.
🎵 "Break apart the fear inside—
Let the world hear how I fight!" 🎵
He struck again—
BAM!
A sonic pulse shot forward, throwing the demon into the air.
Arlan leaped after it, voice rising into a powerful chorus—
🎵 "RISE WITH MEEEE—!" 🎵
The note became a shockwave.
KA-THOOOOOM!!!
The monster was blasted straight upward, crashing through the ceiling.
Arlan landed lightly on his feet, dust swirling around him.
The room was silent.
Shaking.
In awe.
No one knew what they had just witnessed.
⸻
The Aftershock
Dust fell quietly.
Arlan exhaled, letting the last note fade.
The music dissolved into the air like mist.
People stared, speechless.
Cameras zoomed in.
Phones recorded.
Millions were already watching.
But only one person mattered to him.
Momo—
She ran to him the moment the shockwave settled.
She threw her arms around him, hugging him so tightly it hurt.
"Arlan… Arlan you idiot…!" she cried softly into his shoulder. "You scared me—"
He stroked her hair gently.
"I'm okay."
"You weren't supposed to go alone! I thought—"
Her voice cracked.
"I thought I was going to lose you."
"You won't," he said softly.
She looked up at him through wet lashes.
"You're… you're not allowed to die. Ever."
Arlan smiled faintly.
"I'll do my best."
"No," she whispered fiercely, pulling him closer.
"You'll come back. Always. To me."
He didn't argue.
⸻
But the world had changed.
Because outside the theater…
Cameras replayed the footage.
Reporters screamed into microphones.
Hero agencies froze their screens.
Analysts compared his strength to All Might.
The name Arlan Kurogane spread across the planet in minutes.
A superstar?
Yes.
But now… something more.
A hero.
A phenomenon.
A legend in the making.
And he had no idea—
How much this one battle would change everything.
The Day the World Changed His Name
The monster was gone.
But the echo of Arlan's music still vibrated through the shattered theater, lingering in the air like a divine aftertaste.
Emergency sirens wailed outside.
Hero teams surrounded the building.
Drones hovered everywhere.
Yet inside, the world felt strangely still.
Momo was still holding him, refusing to let go, her breath shaky, her hands trembling with leftover terror.
Arlan slowly placed a hand on her back.
"I'm really okay."
"No, you're not," she whispered into his shoulder.
"You pushed yourself too hard. I could feel it."
Arlan hesitated.
She wasn't wrong.
His voice felt raw.
His quirk was still humming aggressively in his veins.
The battle had awakened something deeper, stronger, almost frightening.
But he forced a smile anyway.
"I'll be fine. Promise."
Momo pulled away just enough to look into his eyes.
"You better be," she murmured, cheeks flushed, voice trembling.
"Because if you ever scare me like that again, I'll— I'll…"
"You'll what?" he teased gently.
"I'll never let you out of my sight again."
Her voice dropped to a whisper.
"Ever."
Arlan blinked.
Then—
A loud metallic slam interrupted them.
⸻
Heroes Arrive
The doors burst open.
Mt. Lady, Kamui Woods, and a troop of pro heroes stormed inside, weapons raised, adrenaline high.
"Everyone remain calm! External damage detected—!!"
Then Mt. Lady froze.
Everyone froze.
Because in the middle of a room full of rubble and shocked civilians…
Stood a fourteen-year-old boy.
Glowing slightly.
Dust rising off his boots.
Golden eyes still flickering with power.
A teenager…
Who had just launched a Class-B Demon Mutant through a ceiling.
Kamui Woods scanned the room.
"Who's responsible for the impact zone outside? We detected a massive shockwave—comparable to mid-tier pro hero output!"
A trembling security guard pointed.
At Arlan.
Kamui blinked.
Mt. Lady blinked.
Every hero blinked.
"That… that child??"
The guard nodded vigorously.
"He didn't just fight the monster… he beat it."
"Alone," another added.
"And while singing," whispered a terrified stage manager.
Silence.
Mt. Lady slowly crouched to Arlan's eye level.
"What… quirk… do you have?"
Arlan scratched his cheek.
"Uh… music?"
Mt. Lady stared at him as if he'd told her he had invented gravity.
Momo stepped in front of him fiercely, arms spread.
"He didn't do anything wrong. He protected everyone here! If he didn't act, half the theater would be dead."
A hero opened his mouth to argue.
Momo's quirk lit up instantly, her palms generating a glowing metal staff.
"Go ahead," she said quietly.
"I dare you."
Arlan sighed, touched her shoulder.
"It's okay, Momo."
She didn't move.
She wasn't letting anyone get near him.
⸻
The Cameras Find Him
Outside…
Dozens of news drones hovered, zooming in through the broken building.
Lights.
Mics.
Voices.
"Is it true a teenager defeated the monster!?"
"What is his quirk!?"
"Is this the 'Musical Prodigy'?!"
"Arlan Kurogane—are you humanity's next hero?!"
"IS HE THE NEXT ALL MIGHT!?"
Reporters shouted louder and louder.
People were chanting outside.
"AR-LAN! AR-LAN! AR-LAN!"
The heroes, already overwhelmed, looked at each other helplessly.
"What do we do!?"
"He's not licensed!"
"He's literally a singer! How do we classify this!?"
"His strength is impossible for his age!"
Momo growled—yes, actually growled—and positioned herself between Arlan and every camera she could.
But it was too late.
Because the world had already seen enough.
Arlan Kurogane:
The 14-Year-Old Who Fought a Monster With Music.
And won.
⸻
Social Media Erupts — Worldwide
In the next 10 minutes:
The Internet exploded.
The Social Media Sites crashed.
News channels cut to emergency broadcasts.
Headlines blared:
"THE CHILD WHO SINGS LIKE A GOD AND FIGHTS LIKE A LEGEND"
"ARLAN KUROGANE: JAPAN'S NEW SYMBOL OF HOPE?"
"MUSICAL QUIRK? SCIENTISTS BAFFLED"
Fan edits.
Slow-motion clips.
Reaction videos.
Live analyzers breaking down his footwork and sonic shockwaves.
Worldwide agencies panicked:
"Who is training this kid!?"
"Is he safe?"
And on a private call…
Endeavor grumbled:
"That brat… outpowered my sidekicks. At fourteen."
All Might, watching the broadcast from his home, whispered:
"…Young Arlan… you truly are… spectacular."
⸻
Backstage — The Only Person He Looks At
Chaos outside.
Fame exploding.
Heroes confused.
Billions watching.
But backstage…
Arlan sat quietly, dusting off his clothes.
Momo knelt in front of him, forcibly inspecting every scratch, every cut, every bruise.
"You're hurt," she whispered.
"It's nothing seri—"
She pressed her forehead to his.
"Don't lie to me."
Arlan exhaled.
"…okay. It hurts a little."
Her hands trembled.
"You were glowing," she whispered.
"You were changing. Your quirk… it felt stronger. Wilder."
He met her eyes.
"I didn't lose control."
"I know," she said softly.
"But you almost did."
She cupped his cheeks.
"I can't lose you, Arlan. I can't."
Her voice broke.
"I love—"
She clamped her mouth shut.
Arlan froze.
The air froze.
Momo's eyes widened in panic.
"I—I—I didn't mean— I mean I did mean— but not like that— or maybe like that— but maybe—"
Arlan placed a finger on her lips.
"Momo…"
She stopped breathing.
"You're shaking."
"I—I'm not—"
"You are," he whispered.
She swallowed.
He lifted her hands, placing them against his chest.
"See? I'm right here."
Her breath hitched.
"And I'm not going anywhere."
Her cheeks flushed red.
"…idiot," she whispered, leaning her forehead into his chest.
He smiled softly.
"…I know."
⸻
A New Type of Fame
Security entered again.
"Arlan… the Prime Minister wants to speak with you."
"What."
"And… U.A. High wants to make a statement."
"WHAT."
"And…overseas companies just offered you global contracts."
"WHAT?!"
"And… there are at least 700,000 people outside chanting your name."
Arlan blinked.
"…I just wanted to sing."
Momo squeezed his hand, smirking.
"Congratulations," she whispered.
"You just became the most famous person in the world."
⸻
But Quietly, In the Distance…
Two shadowy figures watched screens in a dark room.
One chuckled.
"So the prodigy reveals himself. Finally."
The other leaned forward.
"That boy… is dangerous."
"Shall we capture him?"
"No. Not yet."
They smirked.
"Let the world worship him first."