It's time...FOR THE FINAL BATTLE BETWEEN ALL FOR ONE AND THE NEO WORST GENERATION!
*Play Kings of Infinity from Death Battle*
"So you have all come to die! So be it!" All for One snarled as he unleashed a wave of Conqueror's Haki but Izuku, Kaido II, Shanks II, Ryuma, and Katakiri stood in front of the others and exhumed their own Haki to fend him off.
"Huh, didn't know you could use Haki!" Izuku said as he and his friends pushed back.
"Yes, it was after my humiliating defeat at Roger's hands! I vowed the next time we met, I would fight back with his own weapons, but you will do just fine as a substitute!"
*At the Midoriya Household*
Bonney and the kids were watching firmly as Izuku and the others fought against All for One.
"Papa, please be safe."
"Mmmm!"
"Daddy, you can beat him. Don't lose." Kanna softly said.
"Big Bro will kick his ass! He's the best!" Roger cheered with Edward and Rouge nodding in agreement. Hana was with them as well and looked nervous, hoping her family was safe, wherever they were but also hoping All for One was stopped as well.
"Deku, everyone, YOU CAN DO IT!" Ochako cried as she held Eri, Nezuko, and Kanna close.
"ALCHEMY CANNON!" Izuku shouted, using the Alchemy-Alchemy Fruit to form a giant cannon that fired at All for One, who created a thick wall out of the ground and absorbed most of the explosion but it still was enough to push him back somewhat. However, that was what Izuku wanted as Ryuma got behind the Symbol of Chaos with all three swords ready.
"Purgatory...ONIGIRI!" Slashing with all three swords, All for One let out a scream of pain as a three-way cross was cut into the back of his suit, sending him flying towards Katakiri, who activated Diable Jamble.
"PREMIER HACHIS!" He yelled, jumping after getting a running start and rapidly kicking All for One with a flurry of burning kicks. The Symbol of Chaos was sent tumbling back and got up, still ready to fight as he coiled his arm like a spring and aimed his open palm towards Corazon.
"[Springlike Limbs] plus [Air Cannon]...TAKE THIS!" Firing a giant bullet of compressed air, Corazon braced for impact before a figure jumped in front of him and punched the air, creating a cracking tremor that shattered the air and dispelled the attack.
"What?!" All for One gasped, if he still had his eyes, they'd be widening in horror as he saw his beloved son standing in front of him. "Ben! How did you escape?"
"Sometimes, you don't need powers to break free from a trap...all you gotta have is the heart and mind to push past the obstacles in your way!" The boy declared as both his arms glowed before exploding into flames, transforming into a pair of giant flaming dragons.
"DOUBLE DRAGON!" The Villain's Son roared as he shot the dragons forward. All for One was too stunned to react as the dragon's bit into him, burning his suit and skin as he screamed in pain before pushing back and jumping a safe distance away.
"Meteor...CRASH!" Stone shouted, channeling energy in his sword before drawing it back into its scabbard, sending meteors towards All for One, who quickly blew them away with a blast of energy from his fingers.
"You'll have to try better than that, brats!" The Symbol of Chaos snarled before suddenly being bombarded with giant icicles made of snow courtesy of Angel, two of which pierced both his legs as he tried to pull them out before Jolyne rushed at him with Silver Chariot.
"This is the power of Uncle Polnareff's Stand! HORAHORAHORAHORA!" A barrage of rapier strikes pierced All for One all over before Erza leaped in.
"SCISSOR LANDSLASH!" Cried the Okama girl as she formed both her arms into scissors and slashed the ground, cutting up large strips of it as if they were paper and making them fall on All for One, badly injuring him as the cut pieces of ground still retained their original density.
"FISHMAN KARATE: SIX HUNDRED-THOUSAND BRICKFIST!" Tiger roared, having been warped by one of Karen's portal behind All for One as he struck him hard in the back, blasting him through the ground strips formed by Erza.
"HADES BLACK FLAMES!"
"Love: SNIPER!"
Mune transformed into his Cerberus Hybrid Form and all three mouths breathed black flames towards All for One, who quickly formed a barrier of air to try and push away the flames. But then Viper shot a single powerful heart bullet from her finger that pierced his shoulder, turning it into stone.
"Foolish! I still have plenty of Quirks that allow me to counter your feeble attacks!" Sneered All for One as he prepared for a counterattack before Shanks II suddenly zoomed in front of him with his right arm coated in Armament Haki and stretched back before electricity coursed through it, followed by flames.
"GUM-GUM RED STORM HAWK!" Shouted the Son of Luffy as he punched All for One in the stomach, creating a fiery explosion behind him, which made him fall to his knees weakly as Olivia crossed her arms.
"Seis Fleur: Slap!" Multiple arms sprouted on All for One's shoulders before slapping him in the face multiple times, one of the slaps even breaking his mask. After a few more hits, the Villain finally had enough.
"I must admit, you little brats are pretty good...BUT THEY WILL NOT STOP ME!" Boosting himself into the air with [Air Walk], All for One then held his hands out and began gathering debris and even chunks of the ground, forming them into a giant ball which then condensed and became a ball of dark energy.
"I would have used my Ultimate Combination technique as I had planned for All-Might...but I figured I'd give you children a special treat!" The Symbol of Chaos laughed before throwing the ball down.
"DEATH BALL!"
"GUYS! SCATTER! VIOLET! PROTECT EVERYONE!" Izuku ordered as Violet quickly formed a forcefield big enough to protect everyone while Karen quickly created a portal to take them far away. The only ones who stayed behind were Izuku, Ben, Kirby, and Kaido II.
"You sure you're up for this, little buddy?" Ben asked Kirby, who smiled and nodded before raising his sword high, causing it to grow several times its original size, much to everyone's amazement as Kaido II chuckled.
"Waiting to show off when the big bad was about to use a super attack? Smart move, kiddo." The Son of Achilles chuckled before his arms became coated in green nuclear energy and he reared them back while Izuku and Ben held hands and nodded before separating and covering the hands they held in Quake Bubbles.
"SMAAAAAAAAAAAAAAAAAAAAAAAAAASH!" The three boys yelled while Kirby let out a mighty cry of his own, the three powered up fists and one giant sword struck the Death Ball, slowly pushing it back as All for One growled in disbelief.
"Dammit, Benjamin! Why couldn't you have stayed by my side?! We could have done great things together!"
"I'm through being seen as your weapon! I'M GONNA BE A HERO! A HERO WHO WILL GO ON IN HISTORY AS ONE WHO DEFIED HIS FATHER'S LEGACY!"
"HELL YEAH!" Kaido II cheered as he, Izuku, and Kirby helped Ben push the Death Ball away, causing All for One to fly out of the way as it flew past him and into outer space, where it exploded harmlessly.
"I think that's going to have an effect on the Ozone Layer..." Endeavor said as he, All-Might, Gran Torino, and the other Pro Heroes watched in awe at the spectacle.
"If these kids weren't only students I'd say they'd already have us all beat for the Top 10 Pro Heroes!" Mt. Lady said, who was having her injuries tended to by Kamui Woods and Best Jeanist.
As Ben, Izuku, Kaido II, and Kirby took a moment to catch their breath, everyone quickly returned to their side.
"Holy crap! That was awesome!" Shanks II cheered as Ben glared at his father, knowing he was still raring to go before a thought came to his head.
"Guys. I need you all to hit me and my dad together!" Everyone looked at Ben like he was crazy but his stern look told them he was serious.
"Ben, please tell me you have a super-powerful regeneration Quirk..." Hinata said worriedly as the bespectacled boy chuckled and tapped her forehead.
"Hey, it's me, sweetheart. I have a Quirk for everything."
"Of course you do..." Mune and Ryuma said with sweat-drops while everyone else had a good chuckle. Ben then turned to face his father, who was floating down as his right arm expanded, being covered in rivets and spear-like bones.
"My Ultimate Combination...it seems I have no choice but to use this as my last resort!" The Symbol of Chaos said before faltering slightly as Ben boosted towards him and grabbed him tightly.
"NOW! GOOOO!"
*Now play Mighty from Death Battle*
"RIGHT!" Shanks II exclaimed before blowing into his Armament Haki-infused left arm and transformed into Gear Fourth: Snakeman Mode.
"GUM-GUM JET CULVERIN!" Releasing a massive barrage of stretching blows after compressing his fists, the punches struck Ben and All for One on all sides.
"Forgive me, Dear Ben!" Penny apologized as she sent several of her swords to shishkebab Ben and All for One before using the wires to pull them towards her as Ryuma stepped in and activated the Kyutoryu Style.
"ASURA!" Ryuma cried, using the Kyutoryu technique to rapidly slash Ben and All for One as Penny pulled them towards him.
"TWIN MOCHI BAZOOKA!" Katakiri roared turning both his arms into mochi, coating them in Armament Haki, and then stretching them back before doing a powerful double palm thrust to both All for One and Ben, sending them crashing to the ground.
"ROOM...CLEAR!" Corazon shouted, forming a ROOM around Ben and All for One before sending an electric shock through it, zapping them both. Tiger than ran up with Violet forming stepping stones out of her forcefields so that he could traverse the destroyed grounds.
"FISHMAN KARATE: ONE BILLION BRICKFIST!" The Son of Jinbe bellowed as he punched so hard, it created a powerful wave that struck Ben and All for One hard. Gyro then jumped into the air and took out a cork from his pocket before infusing it with his [Spin] and shooting it as a drilling bullet that caused both Ben and All for One to spin around out of control upon contact.
*At the Midoriya Household*
"Why are Papa and the others attacking Uncle Ben?" Eri asked worriedly as Bonney looked concerned.
"I don't know...but something tells me that kid has a plan.
*With the UA Staff*
"Oh Ben...be safe..." Midnight whispered in worry, seeing the bespectacled boy as much of her son as she did Corazon.
"Is that kid insane?!" Aizawa said, confused as to why Ben was allowing his allies to harm him alongside his 'father'.
"Something tells me that this is all part of the plan. We simply must have faith." Nedzu spoke up, though he was also rather worried about the potential outcome.
*With the Pro Heroes*
"Those kids are insane! Why are they attacking All for One's kid along with him?!" Endeavor questioned, stupefied at what he was seeing.
"Wait, Enji...something tells me that Ben has a plan!" Toshinori pointed out as he saw everything unfold with the other Pros.
*With the Rescue Squad*
"Why are Midoriya and the others attacking Shigura?!" Eijirou asked in befuddlement as he, Katsuki, Hitoshi, Shoto, and Momo watched in confusion and worry along with a gathered crowd. Melissa had chosen to stay with the Neo Worst Generation since she was technically part of them already, due to her being the niece of Douglas Bullet.
"Perhaps they have some sort of plan. I wouldn't be surprised if Shigura had a trick up his sleeve." Shoto mused.
"UNDERWORLD'S FLAMES!" Mune roared in his Cerberus Hybrid Form, breathing purple flames from all three heads that burned Ben and All for One greatly. Stone then jammed his sword into the ground and increased gravity, pinning the two down as Angel formed her snow wings into a massive gust of snow that soon became a blizzard, frost patches forming on Ben and All for One as they were caught in the epicenter.
"Gigantesco Mano: STOMP!" Olivia yelled as a giant pair of legs formed behind Ben and All for One and stomped on them rapidly as Jolyne rushed in with her father's Stand, Star Platinum.
"ORAORAORAORAORAORAORAORAORAORAORAORAORAORAORAORAORAORAORA!" A quick barrage of punches with the fury of a machine-gun punched into Ben and All for One before they were sent flying into Kirby's direct line of sight.
"POYOOOOOOOOOO!" Kirby cried, having absorbed some of Mune's fire and become Fire Kirby. The younger boy took a deep breath and then fired a steady stream fo flames that burned Ben and All for One greatly.
"Okay! Here I come!" Melissa shouted as she formed a moderately sized golem out of debris with the Clank-Clank Fruit before proceeding to pummel Ben and All for One into the ground, forming a small crater in the process.
"GENTLE STEP TWIN LION FIST!"
"NUCLEAR WINTER 100%!"
Hinata formed a pair of lion-shaped gauntlets out of blue energy around her arms before punching Ben and All for One hard, quickly jumping out of the way as Kaido II delivered a full-powered nuclear punch to the two afterward, creating a massive explosion that blew the two away from each other.
"Ben! Is that enough?!" Izuku asked in worry as he helped Ben up, the boy's clothes were ripped up, burned and his glasses were cracked but his wounds were healing surprisingly quickly.
"Maybe one more punch for good measure!" He said as Izuku sighed and formed a Quake Bubble over his hand before slapping him hard in the face but Ben stood his ground, even as the shockwave rang in his ears.
"Now?"
"PERFECT!"
Ben then turned to see his 'father' getting up, his arm charging with energy as he prepared to strike.
"You fools! RETURN MY SON TO HIS TRUE FAMILY!"
"I AM WITH MY TRUE FAMILY! THESE BRAVE YOUNG HEROES! THEY'RE MY FRIENDS! AND MY FRIENDS ARE MY FAMILY!"
Ben then charged forward, his body glowing brightly with white-hot energy as All for One pulled back his fist with all the power he could muster.
"AND I WON'T. LET YOU. HURT THEM! REVENGE!"
All for One and Ben's fists collided, the power behind both attacks taking the form of a monstrous demon and a powerful devil dragon as the ground around them crumbled. Everyone braced themselves while Violet formed a force field to shield everyone. Kirby touched a rock and became Stone Kirby, turning into a statue and wedging himself in place.
All for One tried his best to push back but then he saw a look in his son's eyes that made him pause. His power slowly began draining as he felt an overwhelming emotion starting to overcome his body, allowing Ben to push through.
That emotion...Acceptance.
"My son...you truly are better than me..." If he still had his eyes, All for One would close them as Ben finally broke through, destroying his entire Ultimate Combination arm and leaving nothing but a bloody stump below the shoulder as Ben pulled his other fist back and punched his 'father' in the face, pushing him into the ground. He then saw the spirit of not just Gol D. Roger but also the first one who ever defeated him; Captain Harlock.
"In the end...even long after your deaths...you've BEATEN me..." Were the last thoughts of the Symbol of Chaos as his entire body was then crushed into a pulp and engulfed in a magnificent explosion that could be seen from outer space.
"Nyo-HO~! Truly Ben's power is magnificent!" Gyro exclaimed as everyone had a front-row seat to the spectacle. Soon, when the dust settled, Violet dispelled her force field and everyone, including the Pros, approached the crater that had been formed form Ben and All for One's final clash.
There, lying in the center was Ben, who's glasses laid destroyed beside him, and his shirt burned off, his pants now pretty much shorts and multiple burns and wounds littering his body. Underneath him was the permanently crippled and mutilated body of All for One, who was barely breathing.
"BEN-KUN!" Hinata cried as she slid into the crater along with Kirby, Penny, Violet, Karen, Izuku, and everyone else while the Pro Heroes watched the kids help their comrade up as best they could.
"No...gotta...do this..." Ben weakly said as he tried standing on his own and with much difficulty, he managed to rise before pumping his fist into the air triumphantly as the Rising Pluto flew overhead and Achilles jumped down along with Jack, Page One, and X Drake.
"Amazing...he actually did it!" X Drake said in amazement while Achilles smiled and looked at his son, Kaido II, with pride as he helped support Ben along with Izuku, the teens helped their friend out of the crater as they looked at the sun rising in the horizon. The Beast Pirates began moving to help any injured civilians in the area while Toshinori felt a pang in his chest and sighed, a single tear leaving his eye.
"Goodbye, All for One...Goodbye...One for All..."
The era of All-Might and All for One had ended...but a new one was about to take its place...
*Omake: All for One's Defeat...in Real-Time Fandub Form!
"I will make sure you all watch my Vine compilations and I'm gonna make you perish, you little rodents!" All for One roared.
"We will never watch your Vine compilations 'cause they suck! You pick all the bad Vines!" Erza said as she snapped her fingers.
"OH SNAP!" Olivia, Angel, Viper, Violet, Karen, Hinata, Penny, Melissa, and Jolyne cried together.
"We're just gonna hang out in the corner here. Just don't blow us up." Gran Torino said as the other Pros stuck and watched from the sidelines.
Ben then slapped All for One like a simp and then he dropped a bag from his pocket.
"MY FUNION RINGS! I'M TAKING THEM BACK!"
"Poyo!" Kirby cheered as he took the Funions and emptied them in his mouth.
"I'M GOING TO KILL YOU!"
"Their Kirby's Funions now, All for One!" Izuku said as he, Kaido II, and Ben got in front of the pink-haired boy protectively before Ben proceeded to use his Neutral Special, a Gun, to shoot All for One's kneecaps out as he fell down and struggled to get up and turned to Ben.
"Ben, listen to me! I know who you're mother is!"
All for One coughed before Ben walked over and snapped his neck.
"DON'T YOU DARE LIE TO ME!"
PHEW! THAT. WAS. TIGHT! I HOPE YOU ALL ENJOYED READING THAT AND I HOPE ALL FOR ONE'S DEFEAT WAS SATISFACTORY ENOUGH! HOWEVER, TOMURA SHIGARAKI AND THE LEAGUE OF VILLAINS ARE STILL OUT THERE AND WHO KNOWS WHAT OTHER THREATS MAY COME AS WELL!
STAY TUNED FOR THE NEXT CHAPTER!