The Heroine is My Stepsister, and I'm her Final Boss-Chapter 419 - 417: THUNDER AGAINST WINGS

The skies over the ruined Samire Kingdom still burned with the static scar of divine lightning. Entire valleys had been carved open as if a titan had raked its fingers across the land.

Forests were nothing but blackened stalks. Rivers hissed with steam. And the air, thick with thunder’s ozone, trembled as a giant form strode across the cracked earth.

Thor.

Not the radiant All-Father of myth, nor the polished god the mortals once prayed to.

This Thor was hulking, swollen with divine gluttony and battle-lust, a 10-foot wall of thunder-eaten flesh and muscle. His beard a wild, storm-tangled mane.

His bare chest wrapped in tattoos that glowed whenever he breathed. Mjolnir slung lazily over one shoulder, its head still dripping molten stone from the mountain he shattered an hour earlier.

Beside him walked his son—

Ouserous, eight feet tall and broad as a fortress gate. Sharp-featured, long red hair tied behind him, sparks crawling under his skin like fireflies trapped in crystal. A boy by divine standards, but a natural calamity to mortals.

The two trudged through the devastation they’d crafted.

Kingdoms reduced to cinders.

Cities erased.

Tens of thousands dead.

To them, it was an afternoon stroll.

Thunder rolled lazily overhead, mirroring Thor’s mood—content, amused, hungry for more.

"Father," Ouserous rumbled, kicking aside what had once been a church spire, "is there anything left to destroy? Or have we already crushed everything worth crushing?"

Thor grinned, his stomach shaking with the laugh.

"There is always something left to break. Mortals breed like rats and cling to hope even after the gods strip it from them." He lifted his hand, letting a bolt of lightning crackle between his fingers. "If they prayed louder, maybe Odin would’ve sent mercy. But they didn’t. So we answered with thunder."

Ouserous nodded like a child learning the lesson of the world. "Pray... or be crushed."

"Good boy," Thor chuckled.

But before he could say more, the sky tore open.

A rush of sanctified wind spiraled down, pushing aside the smoke, clearing the clouds, and forcing even Thor’s beard to flutter. And then—

Gabriel descended.

Armor cracked, wings bruised from days of fighting hellspawn, sword drawn, eyes burning with a fury he rarely allowed.

He landed in the rubble before them—small in size compared to them, but radiant as a falling star. Wings spread wide, feathers shimmering with holy light.

He stood staring up at the monstrous god of thunder, expression unreadable.

Thor smirked before Gabriel even spoke.

"Well," Thor rumbled, "look at that. Atlas finally sends one of its pretty birds."

Gabriel didn’t answer.

He took a slow breath, surveying the destruction... the corpses... the flattened kingdom... the still-burning remains of the Samire palace. His jaw clenched.

Then he looked up at Thor, voice low, steady, lethal:

"What did you do to this kingdom?"

Thor lifted Mjolnir like it weighed nothing.

"Ruined it."

Gabriel’s teeth ground together.

"And the innocents? The children? The elderly? The women who couldn’t even flee?"

Thor shrugged so casually it was insulting.

"They didn’t pray hard enough."

Gabriel’s wings snapped open—feathers shimmering with live celestial fire.

"And Atlas?" Thor asked suddenly, amused. "Your king. Your prophet. The boy Odin favors so much. Tell me—does he cry knowing his mortals burn? Does he scream watching me erase kingdoms?"

Gabriel rose off the air, hovering upward until his eyes were level with Thor’s.

"Speak his name again," Gabriel warned, "and I’ll carve every bolt of thunder from your flesh."

Thor’s grin widened.

"There’s the fire."

Ouserous stepped forward then, excited, electricity dancing across his fingers, crackling up his arms. He stared at Gabriel like a predator looking at a new toy.

"Father," Ouserous said, "I want to play."

Thor pretended to think.

"...Yes. But don’t break him too quickly. I want to hear how loudly he screams."

Gabriel’s hand tightened on his blade.

Ouserous grinned.

And the earth trembled.

Not ran.

Not charged.

Leapt.

Eight feet of divine muscle launched like a ballistic missile, the ground exploding behind him in a crater. Gabriel barely raised his sword before Ouserous appeared in front of him—

A fist the size of Gabriel’s head barreled toward his chest.

BOOOOM—!!!

The collision detonated a shockwave that blasted mountainsides apart. Gabriel was hurled through the air, slamming into a ridge with enough force to pulverize stone. But before the dust even settled, he burst forward again—wings propelling him like a cannon round.

Ouserous was ready.

Both raised their arms, lightning screaming between them.

They clashed mid-air—

Thunder against holy light.

Energy tore through the sky, ripping clouds apart in spiraling tornados of gold and blue. Birds disintegrated. Forests miles away flattened.

Ouserous laughed, exhilarated.

"You’re fun... You’re Very FUN!"

Gabriel didn’t laugh.

His wings flashed—

A thunderous burst of divine momentum—

And he spun around Ouserous, slicing upward.

His blade carved a burning arc across Ouserous’s chest.

Blood sprayed—electric, glowing, divine.

Ouserous staggered back, stunned at the sight of his own blood. "He cut me... Father! He—"

But Gabriel didn’t let him finish.

He dove.

And the sky erupted.

Sword swings became streaks of holy light, each one splitting thunderclouds. Ouserous countered with fists wrapped in lightning so dense they warped the air. Mountains cracked. Valleys shook. Shockwaves traveled across the continent.

The last living mortals for miles fled screaming as the world split under two divine forces.

Gabriel smashed Ouserous into the ground—

Ouserous flipped them both, hurling Gabriel into the air—

Gabriel shot down like a comet—

Ouserous met him with a roar—

Their fists collided, unleashing a blinding dome of light that vaporized the forest below.

Thor watched from a boulder he used like a chair, chewing on lightning like it was jerky.

"Good warm-up," he murmured. "Let’s see what else the little angel can do."

Ouserous’s grin was widening with every blow. He was not fatigued—he was thrilled. This was the greatest fight of his young life.

But Gabriel wasn’t done.

His wings spread—

And then turned black.

Black with wrath.

Black with Heaven’s retribution.

He vanished.

Reappeared behind Ouserous.

Slashed.

Vanished again.

Reappeared above him.

Kicked him through a mountain.

Ouserous flew miles, smashing through hills, through abandoned fortresses, through a collapsed castle before finally catching himself in mid-air.

He wiped blood from his lip.

"Oh... I really like you."

He grinned—

And the sky went white.

Because Ouserous stopped holding back.

Thunder gathered behind him, coalescing into a colossal serpent of lightning wrapping around his back. The air shattered in crackling shards.

He pointed at Gabriel.

"Try not to die too quickly."

The serpent lunged.

Gabriel raised his sword—

And the world around them ended in white-blue destruction.

The beam carved the landscape into trenches, splitting rivers, annihilating everything in its path. Mountains melted. Clouds evaporated. It was the kind of attack that became legend.

Yet when the light faded—

Gabriel was still standing.

Shaking. Burned. Wings frayed. Armor cracked.

But still standing.

Ouserous stared.

"...Father," he said, voice trembling with excitement rather than fear. "He survived it. He survived my Heaven-Splitter."

Thor stood, stretching his massive shoulders, eyes gleaming. 𝑓𝘳𝘦𝑒𝑤𝑒𝘣𝘯ℴ𝘷𝘦𝓁.𝑐𝑜𝑚

"Well then..." he rumbled, "I suppose it’s my turn."

Gabriel tightened his grip on his sword.

The storm god lifted Mjolnir.

Thunder screamed across the continent.

The moment Thor lifted Mjolnir, the world instinctively recoiled.

Birds fled the sky.

Clouds peeled away like shredded skin.

The air thickened until even light seemed to struggle.

Gabriel stood in the center of the devastation—wings battered, armor cracked, sword trembling from the last exchange with Ouserous. His breath shuddered, his body seared with electric wounds, but his eyes never wavered from the titan before him.

Thor rolled his shoulders, each movement releasing booming echoes across the shattered kingdom.

"Impressive," the thunder god said. "My son struck you with the force of a young star... and you still breathe."

Gabriel wiped blood from his mouth.

"You and your ’son’ have slaughtered hundreds of thousands... Thousands!!!!."

Thor smirked.

"And?"

Gabriel’s wings snapped open in fury.

Thor’s grin only widened.

"The last angel I fought," Thor continued, "was Michael. He squealed nicely when I broke his ribs. I wonder—will you sing the same way?"

Gabriel didn’t answer.

He didn’t need to.

Because the ground beneath him cracked.

The air warped.

And the angel vanished.

Only a streak of blinding light remained.

Gabriel struck first.

A downward slash carrying the weight of Heaven’s judgment.

Thor raised Mjolnir casually—

And the collision unleashed a shockwave so apocalyptic that every tree, corpse, and mountain within fifty miles was vaporized into dust.

Gabriel was hurled backward, tumbling through the air, wings bent in jagged angles before he stabilized mid-flight.

Thor didn’t let him breathe.

A single step from the thunder god cracked the continent.

A single swing of Mjolnir tore the atmosphere in half.

Gabriel blocked—

CLAAAAAANG—!!!

The force blasted him through five smoking craters, sending molten earth spiraling upward like liquid gold.

Thor’s laughter thundered after him.

"Good! GOOD! Don’t die yet, little bird!"

Gabriel hit the ground—

Rolled—

And flared his wings back open, launching himself skyward.

Lightning exploded behind him as Thor pursued.

High above the clouds, Gabriel gathered his halo into his sword, the ring shrinking into a burning orb of condensed holy power.

He slashed—

Once.

Twice.

Seven times.

Each stroke sent a blade of divine light screaming toward Thor, sharp enough to cut the concept of "matter."

Thor spun Mjolnir in a lazy circle.

Every beam struck the hammer—

And shattered like glass.

Gabriel narrowed his eyes.

Thor winked.

"That tickled."

Thunder erupted as the god lunged.

Mjolnir crashed into Gabriel’s chest.

Even with his wings crossed in front of him, the blow was catastrophic.

Feathers detonated like grenades.

Gabriel’s ribs cracked audibly.

A sonic boom tore the clouds apart.

He shot downward like a meteor, carving a burning trail across the sky before smashing into the earth with enough force to create a second Samire crater.

Dust mushroomed upward.

Lightning spiraled down the crater walls.

Thor landed softly at the rim, peering down.

"You angels are too fragile. Pretty, but fragile."

Gabriel pushed himself up—slowly, painfully—his wings trembling with rage and agony.

"Fragile?" he rasped. "Is that why you hide behind your son?"

Thor’s smile faltered.

Just for a second.

Gabriel noticed.

And he twisted the blade deeper.

"Mighty Thor," he taunted, "but you let the boy fight while you watched. A god who fears a fair fight?"

Thunder crackled violently around Thor.

Ouserous stiffened, unsure whether to attack.

Gabriel rose into the air again—barely, but defiantly.

"If Atlas were here..." Gabriel said, voice steady despite the blood running down his jaw, "you wouldn’t dare speak the way you do now...You wouldn’t dare strike the way you do..."

The thunder clouds blackened.

A storm the size of a kingdom formed instantly.

Thor’s voice dropped, low and murderously quiet.

"...Do not speak his name."

Gabriel spread his ruined wings wide.

"I will speak it again. Atlas. Atlas. ATLAS."

Thor roared like a primordial beast.

The storm collapsed around him, concentrating into his hammer until Mjolnir blazed white-hot.

"IF YOU WANT YOUR KING—"

Thor bellowed, raising the hammer as the earth split beneath them—

"—I WILL SEND YOU TO HIM MYSELF!"