My Unique Skill is Fate Gacha(DxD)

The salty breeze blew gently, carrying with it the scent of the sea and the lazy sound of waves crashing on the sand. A red and white parasol swayed slowly, shielding the tall, relaxed figure occupying the beach chair as if it were a throne.

The man had short, brownish-green hair, with a few rebellious strands falling over his forehead where a red diamond-shaped mark stood out. His lilac eyes, even behind round dark sunglasses, exuded a natural arrogance, as if they were above everything and everyone in that world.

The Hawaiian shirt, patterned with blue and red flowers, was open, revealing part of his chest and a pendant jewel around his neck—a cut crystal held by golden threads, discreet and of exquisite taste. He was also tall, standing at about 1.95 meters.

This was Indra, King of the Hindu Gods, Lord of the Sky, God of War, Storms, and Rain, who was on a break.

He hummed a melody that only he likely knew. His fingers tapped lightly on the arm of the chair to the rhythm of the music.

After a few minutes, he stopped. His lips curved into a humorless half-smile.

"How long are you going to keep skulking around? I'm not exactly a fan of an invisible audience, you know…"

The tone was sarcastic, almost lazy, but the atmosphere shifted.

"Come out already before I have to ruin my mood."

The sound of the waves continued in the background, but the air grew heavy. A muffled snap echoed as a figure materialized a few meters away, without fanfare. A young man with long, white hair, smooth as freshly woven silk, cascading down to his back. But it wasn't the ethereal beauty of his face that drew attention.

His eyes.

Coldly sharp, like the blade of a freshly forged sword. The kind of gaze that wouldn't hesitate to pierce through anyone without blinking.

Embedded in his chest, a polished red stone gleamed like crystallized blood. More than that, what made the world seem quieter around him was the golden armor covering his body—not as clothing, but fused, as if part of his very being. Every detail shone, not with beauty, but with restrained ferocity.

Indra raised a finger, slightly pushing down his sunglasses to look at him with his lilac eyes.

"And you would be…?"

The young man didn't move. He just stared, as if nothing in that scene mattered. Then, his right hand moved, and in a flash, a spear appeared.

It was long, golden, with a blade at the tip that gleamed as if it could cut through light itself. Between the blade and the shaft, a minimalist design of a sun, delicate and cruel at the same time.

"Just a servant…" His voice was firm, expressionless: "Following my master's orders…"

Having said that, the man who was none other than Karna fixed his gaze on Indra before him. Even if he wasn't from his world, he had a certain history with the God in front of him. Out of respect, he would use all his power to face him.

He spun his spear and raised it.

The moment Karna lifted the spear and invoked the words.

"O Agni."

The temperature surged violently in fractions of a second. The water particles in the coastal humidity boiled before the attack was even unleashed. The atmospheric pressure fluctuated, creating an invisible wave of expansion that pushed the lower layers of air, distorting the horizon.

And then—

"Solar God's Flash."

Appearing instantly in front of the God, he moved his spear in a vertical strike that traveled instantaneously toward its target.

The explosion wasn't a mere flash.

It was the release of thermal and magical energy condensed to such an extreme point that the heat front instantly reached over 6,000°C at the epicenter, equivalent to the surface of the sun.

The sand on the beach beneath Karna's feet vitrified instantly, turning into transparent amorphous glass plates that cracked in circular waves under the pressure.

The ocean, in the path of the attack, didn't have time to boil.

The water was directly vaporized, turning into supersaturated steam at hundreds of atmospheres, creating a temporary vacuum that caused micro-explosions upon contact with the cold air above.

The column of light advanced, cutting through the horizon line. The nitrogen and oxygen atoms in the atmosphere ionized immediately, forming a corridor of ionized plasma that rose to the ionosphere, momentarily rendering the sky opaque.

The flash was visible even from distant lands.

For those seconds, the area near Karna entered a microzone of thermal vacuum and plasma expansion, where no sound wave or ordinary matter could remain stable. It was the perfect simulation of the wrath of a solar god, materialized.

The beach chair and parasol vanished.

The sound of the waves ceased.

For a moment, the world seemed nonexistent.

Karna slowly lowered his spear, thick steam covering everything ahead.

Then, a sharp, dry sound pierced the air.

Crack.

A pair of sunglasses, or rather, what remained of them, fell in two charred pieces, vanishing before touching the ground.

And above, high up, in the empty space where clouds once existed, he was there.

Indra.

He had successfully dodged by a hair's breadth… He adjusted his hair, his lilac gaze now serious. The residual heat from Karna's attack still made the air ripple around him, but he ignored it as if it were a warm breeze.

"How rude, huh…" he murmured, slowly rotating his wrist.

A faint blue glow began to form in the palm of his hand. Small sparks danced in the air, the sound of electricity humming and growing rapidly. That power was not decorative.

Indra extended his arm to the side, and amidst a shimmering flash, a golden, gleaming object materialized.

A three-pronged scepter, shining like thunder incarnate.

The Vajra.

"Since you decided to bother me, it's only fair I return the favor, right?" he said with a slight, crooked smile.

How could a God be insulted like this? He'd lose his dignity if he didn't retaliate, wouldn't he?

The bluish aura around his body expanded, crackling the air with electric discharges. In an instant, Indra raised the Vajra above his head.

"Celestial Thunder Punishment."

The thunder descended.

A blast of pure electrical energy, amplified by divine magic, shot forth like a solid lightning bolt. The strike didn't seem made of light but of living matter—a pillar of compacted electricity with the force to disintegrate mountains.

Karna, unmoving, gripped his spear firmly.

His eyes didn't blink.

At the last moment, Karna moved his weapon, spinning the shaft and blade at a subtle angle.

The impact was brutal.

The thunder collided with Karna's spear, the sonic explosion reverberating like a roar that tore through the sky.

Golden flames enveloped Karna's weapon, and with a skillful spin, he redirected the torrent of thunder behind him, splitting the attack into two diagonal lines that dispersed into the air.

The electric blasts cut through the sky and struck the ground, and what was once a tropical island was obliterated.

The remaining vegetation, rocks, and strip of sand were erased in seconds, consumed by the thunder and left behind as a massive, smoking crater, surrounded only by the churning ocean and pieces of vitrified glass floating about.

Silence followed soon after.

A cloud of dust, steam, and plasma hovered between the two.

Indra descended slowly, hovering a few meters from Karna in the air, his feet not touching the ground.

Karna, naturally, also floated casually. His [Mana Burst (Flame)] ability couldn't only amplify his attributes with magical energy externally and internally; he could also use it to fly effortlessly through the air, using the flames as thrusters, and with his master's magical energy, he didn't have to worry about expenditure…

"…Hoh." Indra let out a low laugh: "I didn't expect anyone besides me could withstand that…"

His gaze slid over the devastated field.

"But you… who the hell are you, huh?"

Karna's spear spun in his fingers, the flames still pulsing around it.

"I told you…" he murmured, without changing his tone: "I'm just a servant…"

The tension began to rise again.

Indra's eyes gleamed with a mix of irritation and interest. He spun the Vajra in the air, the sound of condensing electricity creating small pops that seemed to burst within the atmosphere itself.

"Alright…" he growled, flashing a sharp smile: "Then let's see how far you can go…"

Without warning, Indra charged.

The air exploded around his body the moment he moved, leaving behind a trail of distorted plasma. He spun the Vajra above his head and launched another horizontal strike, the condensed electricity forming a pure lightning blade that sliced through space straight toward Karna.

Karna, floating above the surface, calmly tilted his spear to the side, the strike colliding and ricocheting upward, splitting the clouds in two. The sky parted, revealing the darkness of the ionosphere beyond.

Indra followed up, already launching another attack, this time direct, like a piercing thunder spear. The tip of the Vajra came with enough force to pierce through a mountain.

Karna responded by spinning his own spear in a clean motion, the golden flames enveloping the weapon creating a vortex around the strike. The resulting clash unleashed a wave of energy that swept the remains of the ground below, turning what was once a flat expanse into glass and molten rock.

The battle continued, both vanishing and reappearing in the air, their strikes exploding like meteors of fire and lightning.

The island and the ocean had long since vanished beyond the horizon. All that remained was a devastated land.

Each collision of their weapons sent blasts of energy far off, opening smoking craters where they struck, sending columns of steam and incandescent rocks skyward.

Hundreds of kilometers away, the waves, unable to survive the heat and discharges, dissolved into steam before reaching the battle zone.

Karna dodged unhurriedly, using his flames as thrusters, leaving golden trails with each movement. Indra, with his natural speed and mastery over the winds, appeared at impossible angles, firing blasts and cutting beams, the clouds around them consumed and reformed every second.

"Tsk…!" Indra growled, launching another strike.

Karna spun in the air, dodging by inches, counterattacking with his spear in a lateral arc, a torrent of fire accompanying the strike. The golden flash swept everything in front, carving a flaming canyon into the remaining crust of the island, which disappeared seconds later in a plasma explosion.

The sound of thunder mixed with roars of fire echoed ceaselessly.

The two descended and ascended, crisscrossing the sky at absurd speeds, the battlefield increasingly becoming a formless, devastated land of glass, ashes, and smoking craters.

Their weapons clashed once more.

The impact of that final strike created a flash that streaked across the horizon from end to end, vaporizing the last clouds and expanding the destruction beyond the visible line, giving the impression that the world itself was beginning to crumble there.

Both floated, surrounded by the destruction they caused, but neither seemed willing to stop.

The air was incandescent.

Indra stopped, hovering above the destruction, spinning the Vajra in his fingers. A faint smile crossed his lips.

"Alright… time to end this."

The air grew heavy, not from heat, but from electrical pressure. Sparks sliced through the sky, tendrils of bluish energy racing through the rarefied air. The thunder to come wasn't ordinary—it was pure lightning, condensed and pushed beyond any natural limit. A discharge with destructive potential enough to erase a country from the map.

The sound vanished.

Indra raised the Vajra.

The weapon glowed violently, and then the entire sky changed hue.

A sphere of pale blue plasma condensed above his head, spinning slowly, with concentric rings of electrical energy around it, as if a small electric sun were about to be born.

He pointed the Vajra at Karna.

"Vajravidyut-Pāta…"

The word cut through the silence.

And then, the lightning descended.

It wasn't a beam of light.

It wasn't an ordinary electric current.

It was a river of electromagnetic plasma, with enough charge to generate a discharge of tens of billions of volts and a current greater than the combined total of all storms ever recorded on the planet.

Scientifically, the discharge would cause the instant expansion of atmospheric gases around it, generating a shockwave over 20,000 times the power of the Hiroshima bomb. Temperatures at the epicenter would exceed 30,000°C in fractions of a second, and the ionized air currents would reach the ground like a bolt piercing the Earth's crust until it evaporated groundwater and caused the ground to rupture.

The flash was instantaneous, and Karna was hit full-on.

The energy devoured his figure, enveloping his body as if trying to pulverize it.

But.

In the midst of the flash, the silhouette remained motionless.

The gold gleamed amidst the electric currents.

[Kavacha and Kundala] — O Sun, Become Armor.

This was his defensive Noble Phantasm, a divine set of golden armor and a single golden earring, given to Karna by his mother, Kunti, as proof of his divine heritage. Though he gave up the armor in life, he has it when summoned as a Servant, as it was born integrated into his body. It acts as a powerful crystallized defensive concept that even Gods with their Authorities find difficult to destroy. As light itself taking form, it grants protection against all types of attacks, including conceptual ones. While his armor is active, it reduces all damage dealt to him to one-tenth, rendering attacks from opponents of his level useless, as they only leave scratches that are quickly healed by his connection to his Master.

His defense is so absurd that when Karna is struck by a spear, for example, if it were to pierce him directly, it would only penetrate slightly. However, it offers no protection against attacks that directly damage his internal organs without interacting with his armor. As it is extremely powerful and always active, it significantly increases his maintenance cost, which was no issue for his current self, who had a master with infinite magical energy.

Karna continued staring at Indra, the tip of his spear pointed downward, his gaze unwavering.

The flash ceased.

The remaining clouds had vanished forever.

Indra gasped slightly, his arm still extended, beads of sweat evaporating on his skin.

In the center of the devastation, Karna raised his face.

He took a slight step forward, as if he had walked through a warm breeze.

The gold of his armor intact, the flames still enveloping his body, the air around him vibrating with heat and energy.

Indra gave a lopsided smile.

"…That's absurd. That was one of my best attacks, you know? And you withstood it… A man like you serving someone is a waste…"

Karna stared at him directly.

"My actions don't exist to be seen. Nor to be recognized."

The flames around his body intensified, as if responding to their owner's spirit.

"As long as I can stand… as long as my body holds… I will fulfill what was asked of me."

Indra spun the Vajra in his fingers, smirking.

"You're really a good dog, huh. A good, stubborn war dog."

For a moment, Karna closed his eyes.

"Perhaps."

He opened them again, his gaze sharp as a divine blade.

"But even a dog… if ordered, will bite a god's throat."

Indra's eyes widened slightly, then he grinned broadly, his tone amused.

"Hah! Now that's more like it."

He spun the Vajra above his head, and serpent-like lightning bolts sliced through the devastated sky.

"Alright… I'll take this seriously. Come on…"

Karna raised his spear, the flames responding with a roar that distorted the air around him.

"I expect no mercy."

And so, the two charged again.

Indra rushed forward, the Vajra slicing through the air at absurd speed, but this time, Karna moved first.

A slight spin of his heels, and his body surged forward, the golden spear leaving an incandescent trail behind.

The first strike was swift.

A sharp snap.

The spear's tip grazed Indra's side, opening a deep cut on his left shoulder.

Blood splattered in the air.

Indra stepped back, but Karna was already on him.

No time to spare.

The second strike came from below, a diagonal cut, tearing into the side of the Hindu Sky God's torso.

Indra gritted his teeth, his expression hardening.

Karna gave no quarter, moving his spear with mastery to confront the God. The spear spun, and the shaft struck Indra's jaw with force, sending him reeling to the side. Before his body hit the air again, Karna was already behind, striking with the back of the blade.

A snap.

Indra's arm was forced back with the impact, and another piercing strike hit the side of his abdomen, piercing divine skin and drawing more blood.

Indra gasped, retreating again, trying to create distance. Damn it! What was happening? He wasn't even getting a chance to fight! Since when did a monster like this exist in this world?!

He didn't want to use it, but it seemed he had no choice…

His pale blue aura intensified violently, and small electric arcs began leaping between the fragments of earth and glass around him.

Karna narrowed his eyes slightly.

Indra rose, and in that instant, his body fragmented into pure electricity.

In a near-silent flash, the Sky God vanished, and the thunder came half a second later, bursting like a sonic explosion. A flash cut through the distance and reappeared above Karna, the Vajra already descending in a vertical strike.

Karna moved quickly.

The spear rose in a clean motion, blocking the impact. The flames roared in response, and the collision generated a flaming shockwave mixed with electricity, spreading like a wall.

But Indra was no longer there.

Another flash.

To the right.

Another flash.

To the left.

Another behind.

Indra appeared and disappeared with the speed of genuine lightning, the sound of each strike coming only after the blows. Each movement created electric afterimages of himself, residual images made of pure light, serving as decoys to confuse even the most trained eye.

A strike grazed Karna's shoulder.

Another passed close to the side of his head.

A sequence came from above, from the sides, from below.

The speed had leaped absurdly.

The electricity curved around Indra, allowing him to cover instant distances, and the shockwaves he left in the air distorted the space around him. With each movement, fragments of earth and ionized air rose like debris floating in zero gravity.

This ability was called [Blue Lightning], a manifestation of his authority over lightning, so advanced that when used, he moved in four dimensions. By controlling the ability to accelerate and decelerate, he had mastery over the speed of travel, essentially allowing him to manipulate time, deceiving opponents by switching between acceleration and deceleration.

It was this ability he had used earlier to dodge Karna's first attack, but it gave him a massive headache afterward, and his body became overloaded because he was literally moving infinitely close to the speed of light at that moment.

Karna stopped moving.

He stood still in the center of the electric storm.

His eyes narrowed slightly…

And, for the first time in that battle, a faint smile crossed his lips.

In an instant, the flames of [Mana Burst (Flame)] around his body surged even higher, forming a flaming halo behind his back, and his figure began to move faster, keeping up with Indra's new speed.

The spear and Vajra clashed in the air, now in sequences so rapid that the sounds of the impacts blended with thunder and explosions. Each strike left flaming and electric trails, golden and blue streaks tearing through the sky.

The earth beneath them sank further with each blow.

Indra advanced with feline movements, the electricity acting as a thruster, allowing him to slow falls, leap against the air, change direction mid-charge, or even create illusory electric clones that vanished in sparks upon contact.

At times, Karna was surrounded by multiple Indras, afterimages, but without hesitation, his spear pierced each one, cutting through the air as if slicing light itself.

Flames and lightning exploded in every corner of the devastated sky.

Until Karna blocked another lightning-fast strike and spun his spear with a faint smile.

He decided his opponent was worthy of him using one of his Noble Phantasms.

Indra charged again, the Vajra raised, lightning tearing through nonexistent clouds, his speed doubled, tripled, the flashes multiplying around Karna.

But at that moment, the hero of the Mahabharata stopped.

The flames no longer enveloped him in aggressive whirlwinds.

They hovered behind his body, as if revering the moment.

"Weapons are crude," Karna's voice was calm, clear, and cut through the silent war zone. "A true hero kills with a glance."

[Brahmastra] — O Brahma, Cover the Earth.

This was a Noble Phantasm granted to Karna by Parashurama, the sixth avatar of Vishnu. It takes the form of a bow when summoned as an Archer, but appears in other forms in other classes, such as his spear, and he can even use his intimidating gaze with his right eye, usually covered, to fire it as a beam. When invoking Brahma, it pursues its opponent over a great distance, striking unerringly regardless of range…

From Karna's right eye, a red beam erupted, not as ordinary light, but as a flaming arrow.

A blood-red flash tore through space.

The heat of the world seemed to be sucked into that single point.

Indra's eyes widened, his body moving on instinct, lightning condensing around his skin, but he knew.

The red beam covered the distance between them in an instant…

Indra roared, his aura expanding violently. He raised the Vajra with both hands, all the defenses of a supreme god activating at once. Blue, purple, and white lightning enveloped his body, creating walls of condensed energy, layers of plasma, divine force fields, and even dimensional manipulation to deflect the impact.

The lightning barrier shone like a star.

The Brahmastra collided.

The shockwave swept through the sky and sea, and for a moment, the planet seemed on the verge of shattering.

Indra's barrier held for two seconds.

On the third, cracks appeared in the electric wall.

On the fourth, the Brahmastra pierced through the defenses.

Thunder and fire collided directly.

Indra screamed, his body hurled backward like a flaming meteor, crossing kilometers of sky and crashing into the remains of the incinerated earth, opening a crater dozens of kilometers wide.

The explosion lit up the entire horizon, vaporizing the surrounding surface, creating plasma columns that rose to the stratosphere.

The flash was visible from space.

And then, silence.

The flames ceased.

Karna's right eye returned to normal.

He didn't speak.

He merely spun his spear and rested it on his shoulder, floating above the sea of vitrified ashes.

From the bottom of the crater, after eternal seconds, Indra rose.

Blood dripped from open cuts on his skin. His hair disheveled, his skin stained with soot, and his lilac eyes exhausted, but alive.

The Vajra was still in his hand.

Indra roared.

"WHAT THE HELL IS THIS, DAMN IT?!"

The thunder echoed in response to the god's fury.

"ARE YOU MESSING WITH ME, YOU GOLDEN BASTARD?!"

He spat to the side, his lilac eyes wild, lightning ricocheting around him.

"SINCE WHEN DOES A DAMNED SERVANT MANAGE TO DO THIS TO ME, HELL?!"

He took a step forward, his body staggering but the electricity gathering once more, as if the very atmosphere refused to let him fall.

"I AM INDRA, DAMN IT! KING OF THE GODS! LORD OF THE SKY! THE FUCKING GOD OF WAR AND STORMS, DAMN IT!!"

Lightning tore through the sky, sparks leaping from the ground to the clouds.

"NO DAMNED MUTT IS GOING TO MAKE ME SUFFER THIS HUMILIATION!!"

His chest heaved, his right arm trembling with rage and effort as he raised the Vajra one last time, the weapon gleaming with contained fury.

Indra gritted his teeth.

Blood dripped from the corner of his mouth, mixed with the bitter taste of defeat he refused to accept.

The blue sparks around his body intensified, becoming so dense that the air screamed in agony.

[Mahāvajra Vidyutākāśa] —

A pillar of condensed electric plasma, kilometers in diameter, formed in an instant around his fist, launched toward Karna. Within it, tens of millions of lightning bolts intertwined like serpents of blue and white light.

The electric charge advanced so fast that the flash and impact would be simultaneous for any observer, destroying matter at the atomic level. That strike instantly raised the atmospheric temperature to over 150,000°C at the epicenter, five times the surface of the sun, unleashing an electromagnetic shockwave that shut down all electronic systems on the planet. It tore through the ionosphere, leaving Earth unprotected from cosmic radiation.

The plasma's pressure pierced the crust and evaporated the lower layers of the Earth, creating a kilometers-deep hole in the surface, from which the attack flew toward Karna.

A force so absurd, so colossal, that if the target were the planet, it would be destroyed in an instant.

This was his strongest attack!

He poured all his divine power and magical energy to the maximum, using his authority over lightning.

Karna calmly floated while watching the attack coming toward him. Behind him, his armor sprouted blades that opened; he decided to take it more seriously. He spoke calmly.

"This is not an imitation of Arjuna…! Watch the sky! It's about to get worse…"

The flames around him grew denser, shifting from gold to a deep, almost blood-red hue.

The atmosphere compressed. Space creaked. Light particles froze in the air, unable to escape.

[Brahmastra Kundala] — O Brahma, Curse Me.

This was Karna's hidden Noble Phantasm and his trump card, rivaling his golden armor. It's a variant of Brahmastra, where he reinforces it with his Mana Burst, significantly increasing its power and range while enveloping it in blazing flames and suffocating heat.

As he activated it, flames of Mana Burst swirled around the weapon, compressed alongside the power of Brahmastra. The heat surpassed any previous reference—50,000°C, then 100,000°C, exceeding the point where matter and antimatter could coexist.

He made a gesture with his spear and threw it toward Indra's attack…

When the two attacks collided, there was an enormous explosion that made hydrogen bombs seem like fireworks.

Booooooommmm!

The flash consumed the horizon.

The sea, the earth, the air… the very heavens were torn, exposed in white and black rifts.

Indra screamed, but his voice was lost in the flaming fury.

For eternal seconds, there was only light.

And then, silence.

The battlefield vanished.

Nothing remained but a bottomless crater and devastated, smoking earth.

Karna's attack erased the one made by Indra.

High above, floating over the remains of the Indian Ocean (literally, as it had been completely vaporized from the world), Karna hovered with his spear in hand. He looked at the hole stretching to the horizon and narrowed his eyes. He couldn't tell if Indra was alive or dead, as just before the attack consumed him, he sensed something interfering—perhaps someone had saved Indra? Well, his master had said it was only to defeat the Sky God to show the world that Chaldea's strength was no joke…

So, his task was done…?

Karna took one last silent look at the destruction, then shook his head and vanished in a golden glow.

It was time to return to his master to report the success of his mission.

_______________________

(A/N: Sorry for the delay, everyone! I finally finished the chapter of the fight between Karna and Indra, I hope you liked it (I marked it as an interlude in the chapter because I thought it would be cool). I hope you enjoyed it.

Altogether this chapter is worth 3 normal chapters, it has 6k words.

And for those of you who thought Karna took too long to finish Indra, you have to remember that he is one of the Ten Strongest Beings in the world, it would take all the current Maous combined to be able to match the guy (some abilities he used were ones I created to give him some lore, since in DxD there weren't many abilities for him), remember that the Ten Strongest Beings in the DxD world can basically destroy the world, something that any average Servant in the Nasuverse could also do if Alaya and Gaia weren't there to get in the way.

And about someone interfering in the fight and Karna not caring…?

The mission was not to kill Indra but to defeat him, and Karna completed it splendidly.

As for who could have interfered, there are two plausible possibilities for him to have been rescued from the attack, but he's going to be traumatized…

💬 And hey — want to just read ahead a bit?

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