**Jupiter – Orbit, The Final Crucible**
Jupiter's storms had become a maelstrom—vast crimson bands spiraling into violent green whirlpools, as if the planet itself mourned the battle unfolding in its shadow. The void was alive with emerald atomic energy—swirling in radiant, furious cyclones that rotated like a newborn galaxy born from desperation and hope. Auroras of pure green light danced violently across the gas giant's atmosphere, lightning arcing in colors no human eye was meant to witness—neon emerald, void-black, blood-crimson. Gravity twisted. Space itself groaned. The pressure crushed everything—every breath a battle, every heartbeat a defiance against oblivion.
Argon hovered—chest heaving violently, black steel armor shattered in places, cursed tattoos pulsing weakly like dying embers. His four eyes burned with rage, pain, and the dawning realization of mortality. Black lightning crackled around him—erratic, fading.
Leo floated opposite—feet barely touching the churning gas clouds, green aura rising calm and steady like the heartbeat of a dying star refusing to fade. His emerald-green hair fluttered in the solar wind, eyes locked on Argon with quiet, unbreakable resolve. The perfected Atomic Awakening had pushed him to his limit—muscles trembling, torn yellow gi fluttering like tattered banners, green energy coiling around his fists in faint, flickering flames. He breathed slowly—each inhale pulling strength from the cosmos, each exhale carrying the weight of every life he had sworn to shield.
Argon clutched his chest—armor creaking, voice raw and ragged.
"I have enough… Enough of this." His words echoed through the void—cold, desperate, almost pleading. "You can't stop me now… I am a demon king."
Leo shifted into fighting stance—knees bent, fists raised, aura steady despite the exhaustion bleeding into his limbs.
"For humanity…" His voice was calm, resolute, carrying the quiet grief of a man who knew the cost. "I will."
Argon's lips curled—though no mouth was visible, the malice radiated like heat from a dying sun.
"Okay then… I will kill you first."
Argon's body began to glow—black lightning erupting in violent, final arcs. His form shifted—armor cracking wide, cursed tattoos flaring like dying stars. Four arms flexed. Four eyes burned. Hair fluttered wildly. Tail lashed like a dying serpent.
Primal mode—maximum output.
He cracked his knuckles—voice echoing through the void, shaking Jupiter's storms.
"So it's time for my revenge."
Argon teleported—appearing in front of Leo in an instant.
Punch.
Leo dodged—barely.
Leo countered—kick faster than light.
Argon caught it—with one hand.
Small shockwave exploded from the impact—wind howling, Jupiter's clouds parting violently.
Leo's eyes widened—shock flashing across his face.
"No… He's adapting my techniques."
Leo backed off—green eyes glowing brighter, voice steady despite the tremor in his limbs.
"I will defeat you."
He rushed.
Argon attacked—four arms punching, elbows striking in a brutal symphony.
Leo slid through—dodged, weaved—landed a clean kick on Argon's face.
No scratch.
Argon smiled—cold, cruel.
"That's all you've got?"
Leo gritted his teeth—voice low, fierce, breaking slightly.
"No way… I'm using my full power!!"
Argon teleported—landed two ruthless punches on Leo's abdomen.
No shockwave. No destruction.
But Leo's pupils vanished—body crumpling.
He collapsed—unconscious.
Argon hovered above him—voice mocking, triumphant.
"What? Done already!? Weren't you supposed to be a savior?"
Leo clenched the swirling gas beneath him—sensing nothing. Feeling like he was being sucked into Jupiter's depths.
He forced himself up—energy draining, transformation fading. Hair returned to black. Aura dimmed. Green pupils gone.
He snapped his eyes open—flew upward.
Kicked Argon's cheek.
Argon flew—crashing onto Venus at full speed.
Venus cracked—surface fracturing, lava spilling like blood.
Leo gathered his hands—transformation reigniting.
Jupiter shook.
Leo launched himself from the gas giant.
On his palm—a small green orb glowed, pulsing with contained power.
He pushed his hand backward—creating a shockwave that rippled through space.
"The… Atomic…"
Argon—recovering on Venus—tried to predict the attack.
Leo teleported in front of him—voice calm, deadly.
"Wave!"
**The Atomic Waveeeeee!**
A massive green wave erupted—pure, unstoppable—toward Argon.
Argon raised four arms—trying to block.
He failed.
The wave consumed him—body vanishing inside the blinding light.
Leo's eyes half-opened—he fell to one knee, breathing hard, smiling faintly.
"I saved… I saved everyone… Everyone is safe now!"
Suddenly—
Four black hands erupted from the ground—grabbing Leo's legs.
Leo's eyes widened—shock, exhaustion.
"Wha—!?"
Before he could finish—the hands yanked.
With a massive shockwave—the ground exploded.
Leo pushed backward—crashed, bounced across the surface, slammed into a mountain.
He injected his hand into the ground—stopping his roll.
Argon unleashed maximum output—primal form blazing.
"Youuuu!"
He teleported—punched Leo.
Each punch covered in black lightning—relentless, no chance to recover.
Final punch.
Leo crashed into a mountain—rock shattering.
Leo coughed—voice hoarse, breaking.
"What are you really!!??"
He powered up—slowly, weakly.
Argon teleported—kicked Leo's head.
The kick was critical—meant to end it.
Time slowed.
Leo's mind raced—shocked, terrified.
*No… If this kick hits me… I won't survive. He's inserted too much power into it.*
Leo closed his eyes—for one heartbeat.
The kick descended—
Leo dodged—smooth, perfect.
His aura reignited—dark green now, lightning coiling.
"If I can't defeat you in strength… then I use agility."
Argon blinked.
Leo moved—no—he teleported.
Afterimages—hundreds of Leos, moving constantly.
Leo's voice echoed from them.
"Find the real me if you dare."
Argon snarled.
"Is that some ancient illusion?"
He shot lightning blasts—explosions blooming.
Afterimages.
Argon fired a lightning arrow—massive blast.
Afterimages.
From behind—
Leo appeared—slid—kicked Argon's back head smoothly.
Argon buried in ground.
Argon roared.
"This ends right now! You annoying brattt!"
He teleported—punched.
Leo's POV—the punch felt like slow motion.
*Too slow.*
Three punches landed—perfect—on Argon's head, chest, abdomen.
Argon thrown back.
Mid-crash—
Leo dashed—massive kick on Argon's head.
X-ray vision—Argon's skull cracking.
Impact created a massive hole on Venus.
Argon sent planet to planet—landed on Uranus.
Injured.
Leo teleported in front.
"Your adaptation won't work now. I have better speed than you."
Argon smiled—ruthless.
"Heheheh…"
Then laughed—mad, echoing.
"Hahahahahahhaha!"
Leo—confused.
"What's wrong with you?"
Argon—voice low, deadly.
"You think you can defeat me!? Yes… you can. But I will take everything with me! The timer starts now. I will explode in under 10 minutes… and the explosion is galaxy level."
Leo gritted his teeth—eyes wide, heart pounding.
"No way…"
The cosmos waited—silent, breathless—for the final clash.
**Earth – Paras City, Moments Later**
The sky above Paras City turned golden—then blinding. A massive blast wave rippled across the heavens, wind howling like a thousand storms at once. Buildings swayed. Trees bent. People screamed—covering their faces, holding loved ones close.
Blu stood firm—arms folded, cape whipping wildly. One eye barely closed against the force.
"I hope that Leo kills him…" His voice was low, grave. "Otherwise… everything will be destroyed."
Sai's eyes widened—shock.
"Really?"
Blu nodded—solemn.
"Yes. The explosion will be massive… we will all turn to dust."
Absolute silence fell—broken only by the wind.
Yuki clutched her chest—heart racing. Astra hugged her leg—small body trembling, tears streaming.
Wano sat down—tail curling around her, eyes wide with fear.
Aoi—shaking—reached out and held Sai's hand tightly.
Sai squeezed back—silent.
**Back on the Battlefield Planet**
Argon teleported—landed two punches on Leo.
Leo slid—slammed his leg on Argon's head.
Argon buried in ground—the planet shook by impact.
Leo raised his palm—shot green blasts.
Argon countered with a massive lightning blast—dodging.
Leo teleported—landed many punches.
Argon blocked—countered.
Leo sent back.
Argon—voice booming.
"Take this!"
He shot a lightning orb.
Leo jumped—dodged—the orb blasted a mountain behind him into dust.
Leo's eyes glowed—he moved faster—landed a hard punch on Argon's abdomen.
Argon fell to one knee—holding his guts, pain flashing.
"Not bad…" he growled. "But these aren't working on me anyway."
Leo teleported in front.
"Stop talking."
He kicked—Argon blocked—threw Leo skyward.
Argon jumped—landed lightning barrage.
Leo dodged—struggling.
Leo held Argon's arm—threw him into a mountain—it turned to dust.
Argon stood—angry.
"I will end youuuuu!!!"
He teleported—punched.
Leo held the arm—ripped it off.
Only three remained.
Argon screamed—powering up.
"What have you done!! You brat!"
Leo closed his eyes—blinked—teleported behind.
Landed a perfect punch on Argon's head.
Argon crashed.
Leo snapped his finger—many green atomic blasts appeared.
Leo raised two fingers—targeting.
A massive green atomic orb gathered above them.
"The Atomic burst!"
The orb hit Argon.
**BOOM BOOM BOOOOOOOMMMM!**
Five massive blasts in chain—the planet half-exploded.
Argon survived—massively injured.
He smiled—weak, mad.
"There is one minute left…"
Argon laughed wildly.
Leo narrowed his eyes—dashed.
Left massive dust behind.
Leo landed a punch—Argon blocked—adapted.
Argon—laughing.
"Hahahahahahah! There is no way you can save anyone! The end is near!!! The chaos is coming soon!"
Leo landed kick—uppercut.
Argon blocked—adapted.
Leo shot flaming green bullets.
Argon raised his hand—the bullets froze—erased.
Leo's eyes glowed—hair fluttering. Green aura rising.
"I will defeat you today."
Argon glowed golden—like a time bomb.
"You can't. There are only some seconds left."
Leo stopped powering up—thought.
*If I fight him longer… he'll self-destruct… and we all die. Better… give death to others… I prefer to kill myself.*
Leo turned toward Earth—base form.
Smiled—sad, peaceful.
"Goodbye… everyone."
Argon froze.
"Wait? What do you mean?"
Leo placed a hand on Argon's shoulder—teleported.
**Andromeda Galaxy – Near Milky Way**
Leo smiled—landed a last kick on Argon's head.
Argon—shocked.
"No! My move wasted!"
He glowed more—massive blast erupting.
Leo turned—eyes closed, a single tear falling, smiling.
"I saved… Everyone."
The blast erupted—spreading.
Leo turned to dust instantly.
From far—fall of an entire galaxy.
**Milky Way – Earth – Paras City**
A massive golden blast covered the sky—wind howling like a tornado.
Buildings ripped up. Temperature soared—200°C. Lakes, rivers, seas turned to steam.
Blu covered himself—cape whipping.
"Everyone! Cover yourself! The impact is too muchhh!!"
Sai injected sword into ground—holding on.
Aoi sat behind him—hugging tightly.
Yuki held Astra—two Honokage claws erupted from ground to stabilize her.
Wano curled—covering herself.
Blu—inside his mind.
*So… this was a real threat. We fought monsters… trained for years… but they were nothing compared to this. We need to grow up more… for future threats.*
The blast faded.
Silence.
The sky cleared.
Earth survived.
But Leo was gone.
And in the silence that followed—only one thought remained.
*He saved us… all of us.*
**To be continued…**