I AM EXTRA IN A SHONEN MANGA

A figure stepped forward. Yawning.

"Kaen…"

Kaen's head snapped up, his unstable aura flickering. His eyes widened.

Standing between him and the Clown was a tall, wiry young man with wild, untamed black hair. His uniform hung loosely, collar open, posture slouched like he'd just woken from a nap. But his eyes half-lidded, calm, disinterested held a depth that froze even the Clown mid-movement.

It was Raiden Kurogami.

Khael's eyes sharpened as recognition struck.

He murmured, almost to himself:

"Raiden… the Thunder God."

The sensei of Team Three.

Rae Eluron, Kaen Suro, Lira Valenne— His team.

Raiden scratched the back of his neck, bored.

"Tch. You're noisy, Kaen. Burn yourself out again, and I'll drag your corpse back myself."

Kaen grit his teeth, torn between relief and frustration.

"…Sensei."

The Clown tilted his head, void writhing from his palm. His tone sharpened, curiosity laced with caution.

"You…" A pause. Then a grin beneath the mask.

"…You are the famous Thunder God Raiden."

Raiden rolled his shoulders. Sparks of lightning cracked lazily from his fingertips, thin veins of blue-white energy tracing the air like lazy brush strokes. Yet even this "casual" flow made the air tremble.

Raiden's Echo Arts – Thunder Vein

His affinity was thunder speed so sharp it bent sound, power so sudden it ripped the air itself. Legends said he once split the sky and struck three enemies at once before their blades had even finished drawing.

Khael, watching, let out a silent breath.

(Raiden… the Thunder God… why is he here?)

Matthew whispered, clutching his side.

"That's… a monster."

The Clown's laughter rang out, jagged and unhinged.

"Perfect. Now it's getting fun." His void expanded outward, veins spreading like a living shadow across the ground.

"Come, Thunder God. Show me why they call you that."

Raiden finally opened both eyes fully. A faint glow pulsed within them, lightning threading across his irises.

His words were soft, but they carried like thunder across the ruined field

"One strike. That's all you'll get to see."

Kaen's fists clenched.

"Wait… why are you here, Sensei?"

Raiden's gaze didn't leave the Clown, but his answer dropped like a hammer.

"I'm here… because of you kids. Master Isen sent me."

Khael's lips curved, just barely.

(Master… sent him here? So my plan worked…)

The battlefield stilled for a moment. Even the Clown's writhing void slowed, sensing the shift in air.

From the sidelines, Andromeda Ban tilted his head, his gaze flicking from Junjun to the slouched newcomer.

His lips parted in a murmur, almost reverent

"Raiden Kurogami… the Thunder God. Whoah… am I really about to see that infamous attack?"

Junjun said nothing, his expression unreadable—but his eyes didn't leave Raiden for a second.

Nearby, Ceyla Nox folded her arms, her storm-lit aura hissing faintly against the stagnant void.

She clicked her tongue.

"Tsk. Of course he'd show up now."

The weight of Raiden's name pressed down on all of them.

Kaen bit the inside of his cheek, watching his teacher's casual stance.

Khael's eyes narrowed, thoughts racing beneath his calm exterior.

Matthew, pale, could only whisper prayers under his breath.

And Raiden? He simply stretched his shoulders, sparks of thunder crawling across his fingers as if it were just another lazy morning.

The Clown chuckled low, mask glinting.

Rael's brows knit together, sweat sliding down his temple.

His Verdant Mirror pulsed faintly, reading the currents of Shinrei.

(Why… why is this guy not terrified?) he thought, eyes narrowing on the Clown Mask.

Even under Raiden's presence, the masked figure's aura only rippled with excitement—never fear.

Khael's thoughts echoed the same unease, his dragon-blood veins trembling against his skin.

(Even against Raiden… he doesn't flinch. What is this Clown…?)

Raiden's gaze stayed fixed, eyes half-lidded, but his heart ticked sharper in his chest.

(He's still calm. My lightning doesn't shake him at all… is he bluffing? No. That void is alive. Still—doesn't matter.)

The air thickened as sparks crawled up Raiden's arm, veins of blue-white light engraving themselves across his skin like divine script.

He exhaled once, steady.

Then his tone dropped, soft as a whisper yet rumbling like stormclouds.

"Echo Art…"

The ground hummed. The sky darkened.

"Storm God's Wrath."

The instant Raiden spoke the words, the gym's lights flickered and shattered one by one.

"Storm God's Wrath."

A crack split the air. Blue lightning poured from Raiden's body like a flood, arcs slamming into the metal rafters above, shattering them like glass. The wooden flooring beneath his feet burned black in an instant, lines of crackling energy spreading outward like a living storm map.

The gym's walls groaned, windows bursting into glittering shards as if they couldn't contain the pressure.

In that moment, Raiden disappeared.

Not a step, not a blur just gone.

The next breath, his body reappeared mid-strike, arm extended downward like a divine executioner. A thunderbolt, thicker than a tree trunk, crashed from the sky itself, smashing straight into the Clown.

The Clown only tilted his head, mask grinning wider, void writhing faster around him. Instead of retreating, he laughed.

"Marvelous. Truly marvelous! Show me, Thunder God—make me dance!"

The impact was apocalyptic.

The floor of the gym caved in, an explosion of light and dust ripping upward. Steel supports warped and bent as if made of wax. Shockwaves hurled desks, bleachers, and fragments of ceiling into the air.

The others were thrown back—

Kaen shielded his face, his half-awakened void aura screaming to life. "…Sensei…"

Khael skidded, his dragon-blood veins glowing faintly to resist the shock.

Rael's Verdant Mirror flickered uncontrollably, his foresight overwhelmed by the scale.

Matthew gasped, voice trembling, hand clutching his bleeding side.

"Mon…ster… no… this is… a god…"

Andromeda's eyes widened, hands trembling: "Hah… the infamous attack… it's real. The Thunder God himself."

Ceyla, jaw tight, muttered: "Tch… it's like the academy itself is going to collapse."

The bolt roared, chewing a crater into the gym floor where the Clown had stood.

When the dust began to settle, silence drowned the ruined hall. The air still snapped with residual currents, hair standing on end, ozone stinging every nose.

Raiden stood with his arm still extended, lightning hissing across his body like a living crown. His voice was calm, cold:

"It's over."

But then—

From within the crater, a laugh. Low, jagged, growing louder.

"…Heh… hehehahahaha…"

The smoke parted.

The Clown Mask stood there. Burned, cracked, parts of his outfit smoking—yet his body upright.

Void seeped from his wounds like black fire, knitting them together.

His mask tilted, voice dripping with unholy delight.

"So this… is the Thunder God's Wrath?....I felt it tear into me. I FELT it! Hahahaha—"

His voice, ragged but giddy, slithered out of the haze:

"You are Marvelous, Raiden Kurogami. Truly marvelous. You've shown me the Wrath of a God…"

The others froze, realization dawning.

Rael's heart pounded.

(No… no one survives that. How is he—)

Khael's breath caught.

(He tanked it…? Even Raiden's full strike… wasn't enough…?)

For the first time, Raiden's eyes sharpened, his disinterest gone. A flicker of something colder realization.

(He survived... As expected he must be one of them…)

To be continue