(A/N: I do not own any of the pictures used in this ENTIRE story, they were found on Pinterest or Google, they belong to the creators and deserve the credit. Or made with AI art.)

(A/N: I do not own the videos used in the ENTIRE story, they were found on YouTube, the creators deserve the credit)

(A/N: Also I do not own any of the series, animes or games used in this story, they belong to their respective owners and deserve the credit)

USJ, 3rd POV

The vast dome of the USJ training facility echoed with chaos, moke billowed through the air as explosions and energy blasts rattled the structure. Union's students, some of the best from the likes of Class 1-A, Team RWBY, the Gremory Peerage, and the Shinobi squads, found themselves scattered across different zones. Each fought against the sudden onslaught of villains who had invaded their training ground.

In the fire zone, Izuku Midoriya darted between flaming wreckage, his One for All-fueled movements blurring as he dodged Tomura Shigaraki's decay-infused strikes. The villain smirked, his hand stretching out toward a broken support beam.

"How much longer can you run, hero?" Shigaraki taunted, sending the beam crashing down.

Izuku leaped just in time, landing hard but safe, eyes sharp with determination as he avoided it. He moved against Shigaraki as to the side, more of 1-A was battling Dabi, Toga and Kurogiri, all while White Fang and villain grunts swarmed the area.

Near the mountain zone, Yang Xiao Long faced off against Adam Taurus, her Ember Celica gauntlets blazing with kinetic energy. Adam's crimson blade slashed through the air, narrowly missing her as Yang countered with a powerful uppercut. The shockwave forced Adam to retreat momentarily, his mask cracked but his resolve unshaken.

"Pesky human, why won't you just lay down and die," he growled, charging once more

"Cause I'm stubborn ass bitch and don't like losing," Yang said as she cocked Ember Celica and charged,"also, I love kicking psychopath, aka you, ass!"

In the waterside zone, Rias Gremory unleashed waves of crimson destruction magic against Riser Phenex, who laughed mockingly. Issie was in his Breaker form battling Vali, who was also in his Breaker form, each in a slug fest with their Scared Gears. Xenoiva and Kiba were fighting Freed, who had a psychotic smiled as he used multiple robotic arms to battle them

"Is that all you've got, Rias," Riser asked in a mocking tone,"you'll never escape the chains of your family!"

"Still better then marrying your annoying petty ass," Rias yelled in annoyance

She then gritted her teeth, her magic intensifying as she launched a concentrated blast that forced Riser to shield himself with flames. This continues as Koneko was clashing with Kuroka, who was smirking as she played cat and mouse with the Nekomata.

Meanwhile, Naruto Uzumaki squared off against Orochimaru in the rocky ruins, their Kunai clashing with sparks flying. Orochimaru's serpentine movements allowed him to evade Naruto's Rasengan, his voice hissing like a snake. Naruto panted as Orochimaru slowly walked around him, smiling creepily as Naruto glared at him

"You've grown strong, Naruto, but you still lack the resolve to kill," Orochimaru said,"not willing to do what it takes to save Sasuke?"

Orochimaru soon charged at Naruto with a couple of shurikens, but Naruto countered with sliding on the floor. He then started summoning a shadow clone to flank Orochimaru, their combined attack forcing the Sannin back. But Orochimaru just smiled as he puffed his cheeks and blasted poison gas in the area, making Naruto jump back

Above it all, Bakugo Katsuki took to the skies, using his explosive quirk to intercept Dabi, whose blue flames threatened to consume the air itself.

"You think you're hot stuff just cause you spew some colorfully flames" Bakugo sneered, dodging another fireball,"try again patchworks!"

He launched a series of precise explosions, keeping Dabi on the defensive, but Dabi just smiled as he kept fighting. Though throughout the facility, the battles raged with everyone giving it their all. Each hero faced not only their enemy but also the doubts planted by their foes given how they managed to take out Pro heros. The villains struck not just with power but with words, trying to unravel their opponents' resolve.

In the shadows of the observation deck in the ceiling, a single figure was leaning against the railing, arms crossed as they watched the chaos unfold below with an amused smirking. Their sharp amber eyes scanned the battlefield, the faint hum of a power core on their pulsed through his body. The core had metal attachments on their arms, legs and a small one on their neck

(Ignore the sword)

"Well, this is embarrassing on so many levels," he remarked dryly, his voice calm but laced with sarcasm,"the great mighty Union, reduced to flailing around like amateurs with their heads shoved up their asses. I'd almost feel sorry for them...if it weren't so entertaining as fuck."

A smirk crossed their face as the battles continued beneath them, Heros and Villains just failing around like idiots. The Heroic Society's brightest were being tested,...and failing miserably, but they knew this was just the beginning.

"Well...showtime," they said and powered up

The chaos of battle continued to rage in the USJ, each student locked in combat with an intense determination with the will to survive. Explosions tore through the air, magic crackled, and shouts of defiance echoed throughout the facility. Above it all, the air suddenly grew heavier, a strange hum resonating from somewhere unseen.

The sound grew louder, and a streak of crackling, cobalt blue energy erupted from the sky, slamming into the center of the USJ like lighting. Suddenly a shockwave blinded them all, the impact shattering glass and throwing everyone to the ground. Smoke and dust filled the air as the combatants scrambled to their feet, shielding their eyes from the radiant glow emanating from the crater.

From the epicenter of the blast, the attacker emerged, their form outlined by the shimmering energy of the power core on their back. His armor glowed faintly, a series of alien etchings its surface was pulsating like a living thing. His piercing amber eyes scanned through the helmet, seeing the stunned heroes and villains with disdain as he dusted off his hands casually.

"Well, isn't this just a heartwarming sight," he began, his voice dripping with sarcasm,"Heroes, villains, playing tag in a training ground like overgrown bitching toddlers. I'd almost be impressed if it wasn't so painfully fucking pathetic."

His words were a whip cracking through the silence, but he didn't stop as he urned to the Union students, his smirk widening under the helmet.

"And you call yourselves the next generation of heroes," he asked,"all that posturing, all those grand speeches about saving the world, yet here you are, barely keeping it together. Do you even know what you're fighting for? Or are you just hoping for a shiny medal and a few likes on social media, or getting laid cause you want lose your V cards so badly?"

"Hey who the fuck are you," Mercury asked him

That was the bad thing to say as the attackers gaze shifted to the League of Villains with a grin.

"And you lot—oh, don't think you're off the hook, get your ass over her bitches," the attacker said with a laugh,"you're not freedom fighters or revolutionaries. You're just petty criminals throwing tantrums because the world didn't give you a bandaid for your booboos? Honestly, it's so embarrassing sad that I cringe. At least pretend to have a vision worth fighting for, better then being attention seeking sluts."

The combined group, momentarily united in their confusion, recovered quickly. Bakugo was the first to act, his hands already crackling with explosions as he shot forward to the attacker.

"Who the hell do you think you are," Bakugo roared, unleashing a powerful blast.

"Someone who actually gets bitches," the attacker said

With a flick of his hand, a shimmering energy shield materialized, absorbing the explosion without so much as a ripple. The shield collapsed instantly, and the attacker stepped forward, his tone mocking as he looked at the bewildered Bakugo.

"Bold, but incredibly stupid," he said,"must be cause your brains is in your dick."

The attacker soon raised his and suddenly pulse of cobalt blue energy rippled out, sending Bakugo hurtling backward into a wall with a thunderous crash. Making the others shocked to see such a powerful blast take Bakugo in a single strike. This caused the battlefield to erupt into chaos, both heroes and villains turned their attention to the attacker.

Midoriya charged at him with One for All, his fist glowing with power to hit him. The attacker sidestepped effortlessly, grabbing Izuku's arm mid-punch, gripping his wrist tightly, crackling with energy. He started tossing him aside like a ragdoll, soon landing hard, rolling to avoid a follow-up energy blast. The attacker sighed as he looked at Midoriya with a disappointed look

"You've got power, but no clear purpose," he said,"also plan ahead dumbass, don't attack recklessly kid."

Shigaraki lunged at the attacker from behind, his decaying hand outstretched. The attacker waved his hand, summoning an energy whip that lashed around Shigaraki's wrist, yanking him forward. He then slammed Shigaraki into the ground with the whip before disintegrating it, taking him out, breaking his arm

"Decay, how original," the attacker quipped

"NOMU KILL HIM," Shigaraki yelled in pain and agony

"Oohh a new playmate, let's hope he isn't a squriter."

The Nomu roared as it backhands All Might and attacked the newcomer, who simply just looked at the Nomu. It ran at him but he simply just lifted his hand in the air, a massive whirlwind of ionized clouds formed above them.  Soon as the Nomu got within an inch of the attacker, a huge massive blue lighting bolt stuck the Nomu, causing it to spaz and soon

!!POP!! !!SPLASH!!

Huge amounts of blood, bone and charred flesh scattered the battlefield, covering the villains and students in blood. The attacker just chuckled as he saw the massive amounts of blood and flesh, making them all shake in fear. The newcomer just chuckled as he was clean, his shield blocking the blood and flesh

"Hmm seems he was a squirter," he said with a chuckle

Next Adam and Yang briefly paused their fight to focus on the newcomer, he raised his hand and it soon glowed the same bright blue. The air around them grew heavier as the attacker manipulated the very gravity around them, forcing both of them to their knees.

"Two overdramatic egos walk into a room," he said but stopped,"...you know I could finish the joke, but honestly, you're not worth the punchline or the time to make one."

The attacker released the gravity hold, letting them collapse, but they rolled before a barrage of attacks followed: magic from Rias Gremory, flames from Dabi, and Orochimaru's gas. The attacker activated a rotating energy barrier, deflecting every attack with precision as it spinned. The reflected magic sent Rias tumbling, while Dabi's flames fizzled out uselessly and the gas flew away.

"Is that all you've got, I've seen cockfights shows with more bite," he mocked

Soon he snapped his fingers to send a concussive wave that scattered his attackers away like flies. But the attacker wasn't done yet, he raised both hands, the core on his back started glowing brighter as the air vibrated with energy. Localized storms formed above the facility, lightning crackling dangerously close to the combatants.

"Since you're all so fond of your little games, let me show you what real power looks like," he declared

Bolts of lightning struck around him, precise and controlled, forcing everyone to retreat. Gravity Bombs appeared in the air, pulling debris and fighters into swirling orbs before he lets them collapse hard onto the floor, making the message very clear. As the dust settled, the attacker stood alone in the center of the USJ, the combined might of heroes and villains unable to touch him.

He tilted his head, his expression cold but calm, his helmet covering his sinister smirk. He then spreads his arms at the dozens of beaten villains and heros, laughing a bit as he spoke up

"This, his is your future, umbling heroes and bickering villains squabbling over pathetic ideals," the attacker asked, his voice dropping, carrying a razor-sharp edge,"you're not saviors, you're not revolutionaries. You're relics of a corrupt and abused system, and I'm here to tear it down into nothing more than dust. This is just a demonstration, so be ready when I get serious."

He turned around and was fixing to leave until he felt something grab his ankle. He looked down as he sees a battered and beaten Bakugo, who panted as he looked up at the attacker, his face scared and bruised. The attacker hummed and raised an eyebrow, he had to admit, Bakugo was one determined little shit.

"Mind letting go, I don't want bloody hero blood on my Jordans," he asked him

"Who...the fuck...are you," Bakugo asked him, breathing heavy

"Hmm...ah I remember now...my name is Etherion," Etherion said

And with that, Etherion vanished in a flash of cobalt blue energy, leaving behind a battered, stunned crowd and the undeniable realization that they had just faced a force unlike anything they'd ever encountered. The villains all managed to sneak to a corner and teleport away, Hero reinforcements coming in and helping the students, with them all filled with fear

Elsewhere

Etherion felt the familiar pull of teleportation as the world around him dissolved into a swirl of blue energy. The hum of the Core on his resonated faintly, calming yet eerily detached from the plains of reality. Moments later, the ground solidified beneath his boots, and he opened his eyes to desolation of a place he once called home.

It was once a small, thriving village, with people laughing, smiling and living their lives with no sense of danger. But now it was a graveyard of memories, buildings lay in crumbled heaps, their skeletal remains stretching toward the sky. Charred wood and shattered stone told the story of destruction long since passed, a tragedy swallowed by the indifference of time.

Etherion, or when the helmet came off, Jiang Lei walked slowly through the ruins, his heavy footsteps breaking the oppressive silence. The air was thick, suffocating, as if the ghosts of the past lingered, watching his every move. His amber eyes scanned the surroundings, catching glimpses of what used to be: a merchant's stall, a small schoolhouse, a playground now consumed by weeds.

He turned a corner and stopped, before him stretched a massive cemetery, makeshift wooden crosses rising from the earth like solemn sentinels. Each grave bore a personal item, small trinkets that once belonged to the departed. Jiang's breath hitched as he stepped forward, the weight of his memories pressing against his chest.

He walked through the rows, each cross marking someone he had known. A scarf fluttering weakly in the breeze, rusted toy sword and a broken pendant. Each item clawed at his soul, ripping open wounds he thought had long since scarred over. When he reached the final row, he stopped and stared at three crosses stood side by side, slightly taller than the others.

One bore his father's coat, the other his mother's bracelet, and on the smallest it held a tiny pair of shoes hanging from it. Jiang fell to his knees before them, his body trembling as tears streamed down his face.

"I... I should've been here," his voice cracked, raw with guilt,"you needed me, and I—"

He choked, his hand gripping the dirt beneath him.

"I wasn't strong enough. Not then, I couldn't stop them from killing you. I couldn't protect you!"

The Core on his pulsed faintly, almost as if reacting to his anguish and rage. He ignored it, his mind spiraling into the painful memories of that day, the flames, the screams, the smell of smoke and blood. He had relived it a thousand times, but it never grew easier when it happened. The dreams were always there, reminding him of how he failed back then

"Mother...Father...Mai...," he whispered his sister's name like a prayer, the weight of it breaking him further,"you deserved more. You deserved a better brother than me, a brother who could've saved you. You should be running around, smiling and laughing...not buried at just a year old."

He leaned forward, his forehead touching the dirt at the base of the cross of his baby sister. His tears dampened the ground as his hands clenched into fists, then he started punching the ground, causing lighting strikes to appear around the village.

"I thought if I became strong enough, if I made the world fear me," he said,"I could...I could make sure no one else suffered like you did. But even now, all I do is destroy or kill. I don't know if I'm saving anyone...or if I'm just another monster like they were."

The wind picked up, the faint sound of rustling leaves filling the silence, the cool breeze hitting his skin. Jiang lifted his head, his amber eyes glistening with a mix of grief and fury, pain was all he could feel inside.

"You're all I had...all I ever cared about," he said,"and I failed you. I failed every single one of you!"

His voice rose, anger bleeding into his sorrow as the rage builds up in him. The core's glow intensified, responding to the maelstrom of emotions building within him. Soon the sky turned grey, more lighting strikes started hitting around the village, marking the territory of his home.

"But I won't stop," he said,"not now, not ever. If this world can't protect its own, then I'll tear it apart and rebuild it myself! Do you hear me? I'll make them pay for what they did to you!"

His laughter was soft at first, almost inaudible due to the howling wind of the maelstrom building up around him. But suddenly it grew louder, more strained, until it cracked with a manically glee, his laugh edging on insanity. The core's energy surged, creating faint arcs of blue lightning around him, or a moment, it seemed like he might lose himself entirely.

But then his laughter stopped, the maelstrom soon stopped and the clouds slowly started to part in different ways. Jiang's chest rose and fell with deep, uneven breaths as he placed a hand on his sister's cross, the tiny shoes swaying gently in the breeze.

"I'm sorry, Mai...I'm so sorry," His voice softened, the mania retreating, leaving only exhaustion.

He stayed there for a while, kneeling before the graves of his family, saying a small prayer in Mandarin. When he finally rose, his expression was unreadable, the grief hidden beneath a mask of cold resolve and determination. The core's glow dimmed, its energy settling as if sensing its wielder's shift in focus.

As Jiang Lei turned to leave the cemetery, he glanced one more time to the cemetery.

"I'll fix this world, even if it means breaking myself to do it," he said with a soft tone,"I promise you that...I love you."

The blue energy enveloped him once more, and with a quiet hum, Etherion vanished, leaving the ruins and his family's graves in silence once again.