The battle between All for One and the Neo Worst Generation had now begun. All for One turned his arm into a large blade and swung it down, only for Corazon, Stone, Mune, and Tiger to block with their swords and anchor respectively. As the weapons connected, waves of Conqueror's Haki echoed off the struggling warriors.
"So, you learned Haki, huh?!" Tiger asked with gritted teeth as All for One grinned.
"Indeed! After Roger dared to defy me, I studied his techniques and skills. When I learned that anybody could harness Haki with the right training, I learned to manifest it for myself!"
"Huh, that's so like you! Stealing things that aren't yours and claiming them as your own!" Corazon taunted.
"If only Roger had joined me and Shiki, we could have taken over both worlds!" All for One snarled as he jumped back, disrupting the Haki wave as the heroic young pirates joined back up and got on guard for his next move.
*Meanwhile, on the Piece of Spadille*
"YOU KIDS CAN DO IT!" The Whitebeard Pirates roared as they cheered the Neo Worst Generation on.
"Please...Win..." Hana said as she was also watching with Bonney, Roger, Rouge, Edward, Eri, and Kanna. Roger noticed his new friend's distress and held her hand, giving her a smile as she blushed in response.
"Be safe, Izuku..." Bonney sighed. "Ace...watch over our boy..."
"ALCHEMY CANNON!" Izuku shouted as he used the [Alchemy-Alchemy Fruit] to create a huge cannon that fired a massive explosive payload at All for One, who held out his hand and formed a massive air barrier to absorb the attack.
"PURGATORY...ONIGIRI!" Ryuma shouted as he slashed at All for One, creating a massive X-shaped shockwave but the Symbol of Evil melted through the ground and reappeared behind the Son of Zoro, preparing to strike him down.
"OH NO, YOU DON'T!" Katakirin roared as he appeared behind All for One. "BIEN CUIT: GRILL SHOT!"
All for One growled in pain as the Son of Sanji delivered a flaming back kick from behind, burning his suit and leaving a criss-cross grill-shaped burn on the originally well-tailored outfit.
"Impressive...BUT NOT ENOUGH!" All for One turned his arm into a blade and swung it at Katakirin, only for Corazon to knock his friend out of the way and take the blade to his arm, lopping it off as the Son of Law and Midnight screamed in pain.
"CORAZON!" Everyone screamed at the sight of their friend getting his arm chopped as All for One smirked and reached his hand out.
"Your Quirk is exactly like your father's Devil Fruit. Once I have it, I'll give it to a trusted friend of mine who will restore me to my former glory...and then I shall achieve Immortality!"
"That's what you think..." Corazon smirked as he suddenly created a ROOM with his remaining hand, which he then made a gesture with. "Sterben Blade...!"
Corazon's chopped-off arm had actually been holding his Harbinger, which turned into its scythe form as his arm floated back to him thanks to the powers of the ROOM, the arm and scythe spinning around to become a makeshift buzzsaw. before All for One could react, the attack hit him in the back, making him scream in anger and pain.
"Need some help, buddy?" Ben asked as he created his own ROOM and pulled Corazon towards him with Shambles. The Son of Law smiled as he simply reattached his severed arm thanks to the power of his Quirk.
"No need. I am my father's son, after all."
"Meteor...CRASH!" Stone said as he swung his sword downward, pulling a meteor down from orbit towards All for One. The Symbol of Evil growled as he fired a blast of energy from his palm, pulverizing the meteor before it reached him.
"PERPETUAL SNOW!" Angel yelled, transforming into a snow monster as a blizzard surrounded her before lunging to bite All for One, who held back her fangs before grinning.
"Hypertrophy..."
All for One's arm bulked up in size, tearing apart his sleeve as he reared his gigantified fist back and punched Angel, dispelling her snow monster form and sending her flying back. Thankfully, Penny created a cushion of snow to stop her descent.
"OH, NOW YOU'VE MADE ME MAD!" Erza roared as she pulled out her scissor blades and channeled her [Scissor] Quirk through them, cutting up the ground into strips and sending the curved strips down on top of All for One, crushing him due to them maintaining their original density.
"BAH! A futile effort!" All for One scowled as he burst through the strips of ground, only for Tiger to appear behind him with his anchor pulled back.
"ANCHOR TILE BREAKER!"
Combining his Fishman Strength with his anchor, Tiger struck All for One in the back and manipulated the water vapor in the air to increase the force of his strike, sending the Symbol of Evil flying towards Mune, who grinned as he transformed into his Hybrid Form.
"HADES' BLACK FLAMES!" The Son of Mifune and Carrot roared as he and the two dog skulls on his shoulders breathed gouts of black flames at All for One, who quickly waved his arms and formed a barrier of concrete from the ground around him to absorb the flames as he used a [Density Alteration] Quirk to pull himself down to the ground.
"LOVE SNIPER!" Viper shouted as she combined both hands into a handgun gesture and fired a streaking heart-shaped bullet that pierced All for One, turning the impacted part into stone.
"Impressive technique, but not enough!" The Symbol of Evil snarled but that's when Daigo jumped over his girlfriend, stretching his Armament Haki-coated arm back as it sparked with lightning.
"GUM-GUM RED STORM HAWK!" The Son of Luffy and Nami shouted as he shot his arm forward, covered in lightning and flames as his fist impacted into the petrified part of All for One, causing an explosion that shattered the petrified area, leaving All for One wounded.
"Seis Fleur: SLAP!" Olivia shouted as hands sprouted on All for One's shoulders and began slapping him silly, one slap even managing to crack his mask. However, it was at that moment the Symbol of Evil grew tired of holding back.
"You brats are good...BUT I'M DONE PLAYING AROUND!"
"Really? I didn't get to go yet!" Ghidorah said as he appeared behind All for One, his arms glowing with green nuclear energy as he dove towards the Villain and reared both fists back.
"NUCLEAR WINTER!"
All for One was hit before he could react and plummeted down to the ground, the impact creating a massive mushroom cloud. All-Might, Endeavor, Gran Torino, and the people watching all held on as best they could to avoid being blown away from the resulting shockwave.
Penny fired strings made of smoke that pulled Ghidorah back to the rest of the Neo Worst Generation. Ghidorah looked slightly winded but still rearing to go as he took a few deep breaths.
"You doing alright, G?" Ben asked as the Son of Achilles grinned and gave a thumbs-up.
"Uh, guys, I don't mean to be the bearer of bad news...but I don't think he's down!" Melissa pointed out as everyone turned to see All for One coming out of the crater formed from his and Ghidorah's landing. His mask was shattered, leaving his face and respirator exposed. His suit was torn in several places and he was bleeding from the wound caused by Viper and Daigo's attack earlier.
Well, you kids are tougher than you look... but that will not stop me..." The Symbol of Evil released a huge wave of Conqueror's Haki as everyone stood their ground.
"Man, that's a lot of anger directed at us!" Ben yelled. "You guys more than me since I'm his son."
"It's time to end this farce. At this point, I was going easy on you brats, letting you wail on me to get your aggressions out." All for One chuckled as he floated into the air and held his hand up, several chunks of rubble, ground, and other destroyed objects floating together and forming into a ball of pure dark energy.
"...BUT NOW IT'S TIME TO END THIS LITTLE GAME WE'VE PLAYED; DEATH BALL!"
"SCATTER!" Izuku yelled as the Neo Worst Generation all scattered to get out of the blast radius. The only ones who stayed were Izuku, Ben, and Ghidorah.
"You up for this?" Izuku asked as Ben and Ghidorah formed Quake Bubbles over their fists, the verdant-haired boy doing the same as he placed his free hand on his hat to keep it from flying away.
"Hey, anything to take my old man down a peg? It'll be worth it!" Ben smirked as the three bys all pulled their Quake Bubble-coated fists back as the Death Ball began getting closer.
"THREE-WAY TREMOR FIST!"
The trio made a huge shockwave that traveled to the Death Ball, which then shot back towards All for One, who clicked his tongue as he dodged by combining two Quirks,[Air Cannon] and [Springlike Limbs], to push himself out of the way in time. The Death Ball exploded harmlessly in the sky as everyone looked up at it in awe.
"A clever tactic...but it only delayed the inevitable."
The Neo Worst Generation regrouped as All for One floated down before combining several Quirks together to transform his arm into a hulking monstrous form covered in bone spikes, rivet-like protrusions, and twitching muscles.
"I was hoping to save this for All-Might, but you brats have all earned my ire to use it on you, instead. After I kill all of you, I will take back my son and return him to his rightful home."
"That's funny..." Ben chuckled lowly as he stepped forward. "When I was a child, home never really was home living with you...you lied to me, tortured my mother, destroyed the family I could have had...I'm sick of it. I'm sick of the lies, I'm sick of the death, AND I'M SICK OF YOU!"
Ben unleashed a fearsome wave of Conqueror's Haki before activating the power of the [Sin-Sin Fruit], harnessing [Full Counter], the power of Wrath. Dark demonic markings spread over his body as he turned to the others.
"Guys...I'm going after my shitty old man. When I'm close enough to him, I want you guys to hit both of us with everything you have."
"But Ben, you might die!" Penny protested as Melissa nodded worriedly.
"Trust me, I know what I'm doing..." Ben said reassuringly as purple demonic flames surrounded him.
"Alright, but if this fails and you do die...I'm killing you myself!" Ryuma said as Ben chuckled before lunging forward towards All for One.
"Hey, Dad! Let's hug it out!"
"What?!" All for One exclaimed as Ben wrapped his arms around him as tightly as possible before turning to his friends.
"GUYS, NOW!"
"Right!" Daigo said as he coated his arm in Armament Haki and blew into it, transforming into Gear Fourth: Snake Man. "GUM-GUM BLACK MAMBA: HURRICANE EDITION!"
A rapid flurry of punches struck Ben and All for One from all angles as Ryuma channeled the power of Kyutoryu, forming the illusion of two extra heads, four extra arms, and a collection of nine blades.
"ASURA: BLADES DRAWN DEAD MAN'S GAME!"
The Armament Haki-infused blades slashed through Ben and All for One, leaving several deep cuts in them as the demonic aura surrounding Ben began getting stronger.
"ROOM: CLEAR!" Corazon shouted, forming a ROOM around Ben and All for One before projecting electricity through it, shocking them both.
"Forgive me, Ben..." Penny said as she fired a powerful blast of magical green fire that burned Ben and All for One severely.
"Me too!" Melissa pleaded as her All-Might Golem jumped forward and hit Ben and All for One with its own Detroit Smash.
"FLAME GIANT'S FIST!" Izuku shouted as his arm became engulfed in flames and grew larger in size as he struck Ben and All for One, sending them crashing to the ground as Ghidorah dove down and struck with another Nuclear Winter, this time with more power.
"GIGANTESCO MANO: STOMP!" Viper shouted, two large pairs of legs forming and stomping on Ben and All for One repeatedly. Mune jumped over them in his Hybrid Form and took a deep breath.
"UNDERWORLD'S FLAMES!" Mune and his dog skull shoulder heads unleashed purple flames that slammed down on Ben and All for One, burning them severely.
"Dear god, is that enough?!" Erza asked as Ben suddenly came over with the power of the [Stand-Stand Fruit] using [Hermit Purple] to pull himself to a good distance as All for One got up, his suit burned, near-destroyed, and messed up but he was still standing.
"Yeah, I've got a lot of good pain inside me now..." The Son of All for One chuckled as the demonic purple aura surrounding him exploded outward in power, the black demonic markings on his body glowing with purple outlines as he glared at his father.
"HEY, OLD MAN!"
All for One looked toward Ben as he began slowly walking forward, each step emitting a mighty tremor that shook all of Kamino.
"IT'S OVER! I'M NEVER GOING TO BE YOUR TOOL OF DESTRUCTION! I'M MY OWN PERSON! I HAVE A NAKAMA NOW! AND I'M GOING TO BECOME A HERO!"
All for One glared as he flew forward, rearing his grotesque Multi-Quirk fused fist back as he prepared to attack.
"FOOLISH CHILD! YOU WILL ALWAYS BELONG TO ME! I AM YOUR REAL FAMILY!"
"No, my real family is with me right here...AND I WON'T LET YOU HURT THEM!" Ben roared as he rushed forward, despite the sheer pain he was in, he pulled his fist back and collided it with All for One's own.
"REVENGE COUNTER!"
The power of father and son exploded everywhere as everyone held their ground and shielded themselves. All for One's aura radiated like that of an evil demon lord, but Ben's aura...his aura radiated like that of a fearsome dragon, which flowed around before diving down at All for One, who looked up at the incoming projection and if he still had his eyes, they'd be widening in disbelief.
"You really are stronger than I ever imagined, Benjamin..."
Despite defeat coming at him like a missile, All for One simply smiled in content.
"At least in one way, you succeded me as a truly powerful individual who will one day rule over this world in my steed...Good luck, my boy."
The aura dragon slammed down into All for One, creating a massive explosion as everyone looked away. When everything settled, a massive crater was left in the wake of the clash. Toshinori was helped up by Endeavor and Gran Torino as Achilles jumped down from the Rising Pluto and joined the Neo Worst Generation as they all ran into the crater.
"BEN!" The teens all screamed as they saw the state he was in; His clothes had been burned off, leaving only his pants, which were torched into shorts. He was covered in massive bruises, scars, and bloody marks and his glasses had been shattered. As they approached, he slowly got up, wobbling from side to side as it looked like he could barely stand.
"Well, well, looks like the Son of All for One turned out to be his downfall." Achilles chuckled as he looked at the beaten and bloodied form of the Symbol of Evil, whose twitching was the only indication he was still alive.
"BEN!" Melissa and Penny cried as they ran over and tried to help him stand. The Son of All for One looked up to see a news chopper that had been recording all the events that had transpired and shakily raised his fist into the air.
"Plus...Ultra..."
The Whitebeard Pirates, the Beast Pirates, the NEO ROCKS Pirates, the Big Mom Pirates, and all the other Pirate Crews cheered as they watched this on TV. Izuku's family cheered for Ben as well alongside all of Japan, seeing Ben stand like a mighty pillar despite looking like he was on death's door.
"Holy crap...You really are cool, Ben!" Minoru said as he watched the events on his computer, the grape soda he had been drinking dropped out of his hands and spilled on the short boy's lap.
"They're all okay..." Tsuyu whimpered in relief, covering her mouth with tears in her eyes as her younger siblings moved to support her.
"Merci..." Yuuga said, watching what happened on the TV with his mother beside him.
"They did it..." Himiko said, a wide smile on her face as she was watching the events on a phone given to her by the doctors currently checking up on her for anything the League of Villains might have left in her.
"Are you guys okay?!" Eijirou asked as everyone was airlifted onboard the Rising Pluto. Ben was on a stretcher and hooked up to an oxygen mask while All for One was wrapped in chains to keep him from making any sudden moves.
"Yeah, for better or for worse..." Izuku sighed as he rubbed his arm before being hugged by his friends.
"We're so glad you and Ben are okay, Badguy!" Angel said as Katsuki walked over and slapped his friend on the back.
"Deku, you and Benny sure took that potato-faced fucker down a notch, didn't you?"
"Yeah..." Izuku said before looking out into the horizon. "But the League of Villains is still out there...and I know that they'll be back to avenge their master."
Next Time: Aftermaths & Reunions!