Noikari's roar reverberated through the city as he launched himself directly toward the Colossaeus. Forcing himself past the stinging in his side and the throbbing in his head, he ignored both his injury and the aches that rained down all over. As the child neared, he lashed out with a punch. The giant effortlessly dodged it, though the attack did cause a monumental shockwave behind him. The titanic man retaliated by smashing both of his elephantine fists down on Noikari's back, forcing the child to painfully smash into the ground.
In retaliation, the two tentacles on Noikari's back acted on their own, impaling one of the Colossaeus' arms, eventually touching the bone. Finally, the giant had been hurt. Howling in agony, the giant didn't let the pain hold him back as he brutally punched Noikari with enough force to force the tentacles to withdraw, before grabbing the child and painfully bashing him into the ground once more.
The gargantua held Noikari down, preparing to finish him off, only to be grabbed from above the eyes and pulled away. Bakugo latched onto the Colossaeus' neck, throttling the titan to disorient him. But this only briefly distracted the giant. Recovering quickly, a single mammoth palm took hold of the explosion hero and smashed him hard into a streetlight, the pole snapping as the light within sparked before fading. Bakugo fell to the ground in pain, looking up to see an elephantine foot raised above him, preparing to crush the Explosion hero like a twig.
Before the Colossaeus could get the chance, however, Noikari leapt back into the fray as two tendrils, along with two small daggers he had materialized via his quirk, stabbed into the titan's back, piercing his flesh and drawing blood. Shrieking in pain, the Colossaeus lifted his foot back up, allowing Bakugo to escape. Deku then rushed in once more, activating One-For-All and smashing the creation with a powerful uppercut. Noikari leapt off of the creatures back as the giant finally fell.
As the Colossaeus tried to recover, he found himself under a relentless barrage of blows. Deku sent blow after blow into the giant's chest while Noikari discarded the daggers and generated two rounded clubs, doing his best to cave the artificial being's head in. Bakugo continuously fired a stream of flaming projectiles, smoke and steam erupting outward as every one crashed into the Colossaeus
Skin bruised and blood flew with every agonizing strike, but the Colossaeus would not stay down. Reaching his hand forward, the creature gripped onto Noikari's left shoulder and pulled. With little effort, the young boy's arm was yanked upward so violently that it caused blood to flow freely from the wound. But Noikari was strong, much stronger than he appeared, his power being augmented by the sheer rage he felt. Using the broken streetlamp as leverage, the child wrapped one tentacle around the pole while the other wrapped around the Colossaeus' offending fist. The titan screamed as he felt the circulation in his arm being cut off from the pressure. Grasping the appendage with his other arm, the Colossaeus tugged with all of his might, ripping the lengthy limb clean off.
Noikari cried out as he was forcefully ejected back with the removal of one of his tendrils, with the other tentacle instinctively retracting back into the child's back. With the tentacles now gone, the purple glow of Noikari's quirk took hold of his arms once more. He glared upwards at the giant, the veins in his face bulging as his mouth opened.
A sudden wave of pure oscillatory energy crashed into the giant causing the colossus to fall over, knocked flat on its back. Noikari took a moment to clench his head, snarling. A roar of primal rage echoed from his maw as he launched himself at the Colossaeus once more.
The massive beast struggled to regain itself, grunting in pain as he attempted to move his body. A second surge of energy surged through the giant and pushed him backwards, causing the creature to fall. The giant looked up just in time for Deku's kick to send him crashing through several buildings, causing rubble to rain down on his head.
Shrouded in dust and debris, the giant was enraged. He would not fail Dr. Hetodah's mission. These three would fall. Finally, the giant spoke.
"ENOUGH!" The voice boomed out through the city, reverberating through each and every person's brain.
No one was spared from the booming cry, even as the ground cracked and collapsed around them. It was as if an invisible dam had burst.
The giant rose from the wreckage and with surprising speed, he smashed straight into Noikari, sending the child sprawling into Deku. The pair tumbled through the air, colliding against a nearby building. Landing heavily to the ground, the young boy groaned, struggling to lift his body. The purple light that had completely engulfed his hands was now little more than tiny, lavender embers He glanced up, watching his attacker approach. Stumbling, he scrambled to his feet, using his energy to form a mallet before charging at the Colossaeus. As a burly fist was launched forward, it was struck by a sudden blast of heat, courtesy of Bakugo. This allowed Noikari to slide underneath the giant's legs, giving the child an opportunity, he couldn't pass up. Quickly leaping up on his feet, Noikari swung the mallet with all of his might directly into the giant's heel. The Colossaeus fell to a knee as he felt his femur crack from the blow. He retaliated with a backhand which sent the child once more flying. Before he could crash painfully into a wall, he felt a pair of hands grab him, saving him from a painful landing.
Bakugo, having launched himself with his explosion to catch the child, gently placed him down.
"Thanks, Bakugo." Noikari thanked.
The explosion hero simply scoffed, "Save it for later, kid. We need to take him down, now."
Deku walked over to the two, blood rushing down his face from a large gash. As he scanned his two friends, they weren't doing much better. Bakugo had numerous cracked ribs and scars, while Noikari didn't even want to move anymore.
"I have an idea", Deku inquired.
Raising an eyebrow, the two turned their heads to the emerald-haired hero, confused.
Turning to Bakugo, Deku asked him, "Do you remember how All-Might transferred One-For-All to me, Kacchan?"
He didn't look happy, "... Yeah."
"Then how about I do the same. I can transfer One-For-All again."
"Are you crazy? If you do that, you could risk losing One-For-All permanently." The blonde reasoned.
The emeraldette shook his head.
"That's a risk I'm willing to take, Bakugo."
The blond hesitated, glancing between the two boys. What could he possibly do? Even if he wanted to refuse, he knew there was no way he could win against an opponent like that, even with their combined powers.
"Fine," he grumbled, "But don't blame me if you end up dead."
"Don't worry, I won't."
With that said, Deku activated One-For-All once more, and extended a hand. But not to Bakugo.
He extended it to Noikari. Noikari was confused, but reluctantly decided to take his hand. The moment he did, a surge of sudden power rushed over the child like a waterfall. He looked down at his hands, now shaking. This power was. . unreal. Noikari felt Conversion Furnace rapidly absorbing the innate energy of One-For-All. His shirt was completely torn asunder as red veins appeared running down his forearms. His body became more muscular, bulking him up considerably. As his body finished accommodating for One-For-All, Noikari glanced at Deku, who still held much more power in reserve.
"Are you ready?" Deku asked.
Noikari nodded, "Let's finish this."
Turning to face the giant, Deku and Noikari each clenched a single fist, the former's being engulfed in emerald light while the latter's shone with magenta-hued radiance. Deku activated One-For-All: Full Cowl, turning his hair color from a dark green to a brighter shade of blue. Instinctively, Noikari did the same. With Conversion Furnace working overtime in conjunction with One-For-All, his body began transferring all of his power obtained from Conversion Furnace to fuel his own Full Cowl. His hair became immersed in a brilliant purple, the sheer glow resembling a miniature star. The Colossaeus briefly stepped back in fear before composing himself. This would be it: the final assault.
For a moment there was silence, neither side saying a word.
With two mighty screams, that silence was broken.
Deku and Noikari launched forward at nearly incalculable speeds. The entire area around them was decimated by the air displacement. Bakugo braced himself as he was pushed back by the shockwaves.
Being more accustomed to One-For-All, Deku took the lead. Charging forward and striking the Colossaeus with full force, the colossal creature staggered backward, momentarily disoriented. As he stumbled, Noikari landed another blow across the Colossaeus' chest. The impact propelled his gigantic frame into the street beyond.
Todoroki breathed in deeply, stumbling as he held the unconscious Momo in his hands. Noikari had tasked him with making sure she was okay, and he intended to do just that. He turned around as a tremendous combination of emerald and lavender light pierced the skies.
Todoroki recognized the first glow as Deku, but who was the other one?
He shook his head. No, he didn't have time to think about it. Momo's safety was his top priority. He had seen the look Noikari had given him when he had been told to take her to safety. He wouldn't let his friend down.
Seeing Tsuyu and Tokoyama alongside Ochaco and Ida heading over to his area, the son of Endeavor slowly began his march with Momo still in his hands, hoping that one of them could help.
The Colossaeus hastily recovered, his chest feeling like it was ready to cave in. Before he could act, he was attacked once more. The giant looked up, seeing Deku launching himself at him with all his might, a bright light engulfing his entire body as he flew straight for the colossus. Once again Noikari jumped onto his shoulders, holding firmly onto him with all his strength, trying desperately to hold on.
With a loud roar, the Colossaeus threw Noikari off of him. Unfortunately, this left him unprepared to defend against Deku's next attack.
UNITED STATES OF WORLD SMASH!
Hundreds of rapid-fire punches hit the giant at full force, not a single one being painless as bones cracked and skin tore with every blow. As the giant desperately tried to recover, Deku leapt away before building up momentum and increasing air pressure before launching forward, ending the technique with a devastating kick.
The Colossaeus' screams echoed throughout Tokyo as he smashed into the concrete, his body in too much pain to retaliate. What he saw next filled him with a new emotion: pure, unbridled fear.
High in the sky, Noikari gathered every ounce of power he had left as his eyes flashed, a powerful aura of pure determination filling his small body. The child grit his teeth, focusing all of his willpower as he raised his arms, aiming to strike. A wave of lightning shot from between his fingertips as they connected with each other, creating his ultimate weapon. At first glance it resembled a cross between a hammer and a sledgehammer, its surface was made of sharpened spikes coated in a blackish, glossy sheen. Upon closer inspection it appeared to be comprised of several layers, each layer having a unique shape. A few inches above the top were three massive spikes protruding outward. They were shaped like daggers, with each dagger being tipped by a huge spike which could reach up to twice the thickness of a man's arm. Below these five spikes was a series of seven smaller spikes, each larger than the last, their tips also pointed downwards and slightly angled upwards towards the middle. But this wasn't it.
Strangely, he channeled the power of the weapon into his hands, grimacing as he felt an unfathomable pain in his arms, his fists becoming engulfed in yellow orbs of energy. The construct faded away, leaving Noikari fully charged. Every ounce of power he had absorbed, from the training battle with Bakugo and the others, to the recent influx of power from One For All, fueled his new ultimate attack.
For Momo, he would end it here.
Preparing to launch downwards, Noikari uttered a final saying which shook the Colossaeus to his very core.
"AND WITH THIS POWER, YOU SHALL SMITE THE WICKED!"
His body was instantly consumed by a bright white light as he soared towards the Colossaeus, his right arm shooting out towards the ground. Just as he got close, the young boy unleashed his ultimate technique: Gravity Maelstrom. With his powerful punch landing directly into the giant's sternum. Noikari's fist tore through his stomach before reaching the other side. The entire area, along with the Colossaeus, was engulfed in a bright light. Strangely, the giant felt at peace. For in death, he would finally find comfort. The ground where the giant lay was turned to ash in a mighty explosion which shook the entire city.
With that final strike, it was over. In a crater, Noikari stood, the dead body of the Colossaeus sprawled beneath him. Despite life having left him, it's eyes still remained open.
As Noikari began to calm down, the rage he felt was now fading, and remorse took control. Although he had hated this thing for hurting his friends, hurting Momo, he knew deep down, the Colossaeus wasn't to blame.
It was the doctor.
That cruel, disgusting man who had brought the giant into this world. He had made the Colossaeus uninhibited by emotion. But Noikari had seen it. Signs of lucidity, however faint, existed in the giant during the fight. It saddened him. If the Colossaeus had been found by him, could he have perhaps been an ally, like how he himself had become?
Noikari sighed as he felt something tug at his heart. He knew it was guilt. There was a cruel irony in this whole situation. Deep down, Noikari and the Colossaeus were the same: beings created to bring an end to heroes.
But whereas Noikari was saved and became that which he was made to destroy, the Colossaeus did not have that luxury.
As a final act, Noikari put a hand to the giant's face, trailing it to his eyes. He then gently closed the Colossaeus' eyes, allowing his soul to pass through the living and make the journey to the dead. The child could only hope that in the afterlife, the Colossaeus would find solace.
And then Noikari collapsed, losing consciousness.