Y/N and Izuku stand at the ready, both of them knew that after this, what they had in the past, every laughter shared, every happy moment together, every smile shared, would all be thrown buried and the bond they both once shared would be shattered.

This was not a clash between long friends, but a collision between the Successor of One for All, and the Successor of All for One....

Y/N: Rock Arm + Brawn Boost and Kinetic Booster x4! 

In an instant, Y/N dashed towards Izuku with incredible speed, landed a blow directly to his chest with his arm covered in rock and slammed him into the ground.

Izuku: Gah! 

As Y/N held onto Izuku, he swung his arm as he thrown him towards a pile a debris. As he gets thrown, Izuku manages to get control of his momentum and instead of crashing into the debris, he uses them as a pad and pushes himself off them to zoom towards Y/N. 

Y/N: Muscle Argument + Strength Enhancer x3! 

He anticipates this and as Izuku gets within range, Y/N lands a kick to his abdomen, followed by knee to the face, a left, right, left hook.

Wanda: Oh no, Y/N has taken the advantage now!

Arcturus: That power-up must've increased the power of all the quirks he has stored up in his body. And this is bad since Izuku hasn't fulled recovered from his battle with that Muscular villain. 

As Izuku stumbles back, he shakes off Y/N's attacks at he goes in for his own. Using his skills of analyzation, Izuku is able to land a number of body shots to Y/N as he's able to anticipate certain movements. 

Y/N grits his teeth as he goes for a punch only for it to be caught by Izuku. He does the same thing, but Y/N catches his punch as the two are in a stalemate.

Izuku: Y/N...! I don't wanna fight anymore! Just listen to me...! This isn't what you want!

Y/N: This is exactly what I want! I finally have control, I have the power to change things! And that's exactly what I plan on doing!

As the clash between Y/N and Izuku raged on, those on the sides lines watching from their homes or from the TV on the streets saw their fierce battle. Civilians of course worried for the boy, but Hitomi, Inko, Kyoka, Momo, Mina, and Ochako worried the most. Each of them had a connection with the successors of One For All and All For One, whether they be related or not.

The two successor raged throughout the battlefield, going hit after hit, trading blow after blow with each of each other, neither one of them refusing giving up to try and way the other one down.

Y/N: Shock Absorption! 

Both Y/N and Izuku struck each other across the face, making each of each other fly off. Y/N rolled and tumbled, but was able to catch him as he slide back. Izuku tumbled and bounced on the ground until he reached Arc and Wanda. 

Arcturus and Wanda: Izuku! 

All Might: Young Midoryia! Are you alright?

Izuku: (getting up) Y-Yeah... I'm alright All Might...

Wyvern: Stop it! You three have to get out of there! 

Wanda: Sorry ma, but we can't even if we wanted too. 

Arcturus: She's right, Y/N is still family. We have to save him from himself. 

Arc dashes at Y/N, but he touched a metal object with his right hand as blue sparks start to emit. Suddenly, the railings from the debris start to levitate and heads towards Arc, wrapping around him. He then gets pushed to the ground, trapped by the railings unable to move.

Wanda and Izuku: Arc! 

Y/N: You can't save me, Arc! You can't even stop yourself for being reckless as always! 

Izuku: Stop it!

With a grimace, Izuku lunged at him with his right foot at the ready. However, Y/N uses Air Wall to block the young hero's attack.

He blasted Izuku back with Air Cannon. Wanda floats in the air and then starts firing blasts of energy at Y/N, which he blocked them with Air Wall. He then starts firing his Bullet Lasers at Wanda who was able block the lasers, but she had her cheek grazed by one laser.

Y/N: It's true you can block stop the attacks in your land of sight, you can't block every attack from every single direction. Warping + Bullet Laser! 

With the help of Warping, Y/N unleashes his Bullet Laser and landed some fatal points at Wanda from every direction, causing her to yell in pain. 

Wanda: (thoughts) This is bad! He keeps on blocking our moves and using our weakness to his advantage! 

Arc grits his teeth and starts vibrating through the metal bars as he dashed toward Y/N. 

Arcturus: SUPER SONIC PUNCH!!! 

Y/N: Warping + Impact Recoil! 

Arc reels back for a punch, only for Y/N to use Warping on Wanda as she got punched by her brother and due to Impact Recoil, Arc's shirt gots blown and torn off. 

Arcturus: Shit! I'm sorry... Wanda!

Y/N: I never wanted to use my sister a shield, but you left me no choice. 

???: Y/N! 

Everyone turned to see Hitomi was approaching Y/N. 

Y/N: (surprised) Hitomi...? 

Hitomi: I'm here. Don't run away.

Y/N: Oh, but I'm not going anywhere. 

Hitomi: I know that you're still angry. I know that how you feel hasn't changed, but I want you to—

Y/N: How I feel? How I feel?! I spent the last ten months, dreaming of this moment. I've rehearsed everything I ever wanted to say to you and Katsuki, every word, to make you two understand exactly what you stole from me. But now I realize... (dark chuckles) I don't need you to understand anything. I don't need you at all. All I want is for you to die. 

Y/N's hand was engulfed in blue flames and unleashes a wave of blue-fire at Hitomi, but she used her quirk to block the flames. 

Y/N: (looks at Arc) I've heard and saw many things about you, Arc. Surviving the attack on USJ, winning the Sports Festival, defeating Stain and destroying the Sentinel, saving Melissa and her father, and even stopping Wolfram, Man-Ape, and Sub-Mariner back at I Island and Wakanda. In my opinion, I say you have what it takes to be a true hero unlike the false heroes.

Arcturus: Is that what you think of the heroes in Japan? Is that also why you want to kill Katsuki?!

Y/N: Of course. Although seeing him and Hitomi dead is one of my goals, it's nothing compared to my mission. 

Arcturus: Mission? 

Y/N: What I want is to destroy this oppress system, to be free from the deception of the so called heroes or the next generation of peace. The only way to achieve true peace is to destroy the system we live on and make new system, one where true freedom is given to anyone. They will have the freedom to choose their own path. A world where the weak and strong thrive, but in order for such a goal to happen, I must weed out those who endanger it. Purge those who would not fit in it. I have to be strong, strong enough to people realize their whole life was a deception, and that we will never deceive them. I will make them see that the age of false heroes is over, never again will we all be lied to or be oppressed. 

Izuku: So, you want to terminate all the heroes and politicians? 

Y/N: It's not termination. I would call it... revolution. 

Wanda: Y/N... 

Arcturus: .... You're a fucking idiot. 

Y/N: Huh? 

Arcturus: You think killing all the heroes from around the world as well as the government would be the only way to achieve true peace, but do you think would happen after it? You'll end up creating a massive power gap for villains to fight each other in order to claim it. That's not the path of peace or freedom, that's a path of destruction and chaos! Besides, (gestures at All For One) that bastard killed my mother, the same person our dad fall in love with along with yours! Don't you at least felt angered by that! 

Y/N: I am aware of that, yes. Part of me felt enraged that he was the one who killed Claire since she and our dad were true heroes, but the other part felt relief. Knowing it was my mentor who did, that means she and dad have been saved from the oppressed system.  

A loud slap permeated the air. Everyone stared at Hitomi in shock as Y/N's cheek started to redden.

Hitomi: (angry) 

Arcturus, Wanda, Wyvern, and Izuku: Hitomi... 

Hitomi: You have the right to be mad at me and Bakugo for what we've put you through, but not at everyone, even your dad and Claire! Don't you get it?! Arc's mother was murdered by your so-called mentor, and you act like it didn't matter to you?! If your mother was back from her coma, she would be heartbroken to see what you've become! 

Y/N widen his eyes in shock before he grits his teeth in anger as he came for her again, Hitomi prepping a force field in front of her. An explosion sounded directly in front of her as smoke formed, confusing her for a moment because she didn't feel any weight on her barrier. 

Wanda: Hitomi, behind you!

Hitmoi: Huh? 

She turned behind saw Y/N hold his hand out to her.

Y/N: You shouldn't have come here. Blueflame. 

He unleashes a blast of blue flames in her face as she was slammed into her wall. 

Wyvern, Arcturus, Wanda, and Izuku: Hitomi! 

All Might: (thoughts) He did a fake blast to make her believe she blocked it.

He's using Young Kanetsukabe's quirk against her.

The plasma dissipated as she fell to the ground, before Hitomi decided to throw a force field at Y/N. He dodged it in midair, landing a distance away from her. Hitomi wiped the soot off her mouth as she got up, taking a cautious stance.

Hitomi: (thoughts) I guess walls as protection aren't going to work against him...

Hitomi ran at Y/N, making a large force field and launching it at him. But he died the same with Air Wall as both barrier quirks collied. The bluenette launched multiple small force fields at him, hitting him in the gut and throwing him back a few meters. 

Arc then dashed towards Y/N, but he used Dragon wings to keep himself off the ground and keep Arc from getting close to him. 

Y/N: Hydra! 

Y/N uses Hydra to attack him and slam him on the ground, holding him in place. 

Y/N: It's over. 

Arcturus: (smirk) I wouldn't count on it just yet. Hitomi! Wanda! 

Forming a force field a bit ahead of her, she jumped on it, using it as a makeshift launchpad to vault her high into the air. Suspended in the air, she raised her arms up, drawing in the heat to make a force field larger than she ever had before.

Y/N: (surprised) What the-

Before he could do anything, Hitomi let out a yell and threw the huge force field down at him, slamming his body to the ground.

Hitomi: (thoughts) If I can't beat him, I'll immobilize him instead!

Arc started vibrating through the Hydra as he and Wanda are about to unleash their big attacks while Hitomi keeps the force field down on him. 

Arcturus: SPIN DASH BUZZSAW!!!

Wanda: HEX SMASH!!!

Y/N, who slightly panicked from being immobilize while about to be hit by big attacks, uses his Weather Manipulation quirk and strikes Arc, Wanda, and Hitomi with lighting.

Izuku, Shadow and Wyvern: ARC!!! WANDA!!! HITOMI!!!

As the dark clouds from where the lighting strike spawned dispersed, Y/N was standing over the fallen young heroes in training.

Y/N: I never thought I would be forced to use this. It was one of the most powerful quirks I've stolen so far. (looks at Izuku) Time to end this Izuku! Use all your might to stop me!

Izuku: I'll use 100% of my power to bring you back home!

Y/N uses his Scanning quirk and sees's Izuku's power has increased immensely. 

Y/N: (thoughts) His strength suddenly increased again. It's even higher than before. Amazing... 

Izuku and Y/N rush at each other, each of them going to unleash their full power onto the other in their final clash.

Izuku/Y/N: 100%, DETROIT SMASH!!!/BRAWN BOOST 100%!!!

As Y/N and Izuku clashed with each other, it caused a big shockwave as they each poured everything they have into their attack to push their opponents to the edge and give them the winning blow.

All Might: Young Midoriya... 

Wyvern: Y/N... 

As their clash continues, Y/N and Izuku are almost at an equal force, but Izuku holds back still. In his heart, Y/N is still his friend despite his alliance with the villains. To him, he's still the same boy that used to come over his house every weekend and he didn't want to give up on him. 

Their fist moved past each other as Izuku fisted was headed towards Y/N's head while Y/N's was headed towards Izuku's chest. In the split moment before his fist made contact with Y/N's face, Izuku maneuvered his aim and scraped Y/N's chest while the full force of Y/N's punch landed into Izuku's chest.

Soon, the clash ended as Y/N was seen still standing and breathing heavily form his clash with Izuku, who was unconscious on the ground. Due to him using 100% of Brawn Boost, his right arm was now broken as a result. 

Y/N: (weakly chuckles) You lucky little bastard... You were stronger than I thought. I broke my arm because of that. 

His right arm started healing up, using both Super Regeneration and Cell Activation.

Y/N: It's gonna take some time to fully healed up due to my used of Brawn Boost at 100%. Though, I'm sorry I have to do this. (grabs Izuku and lifts him up) If I can't steal Bakugo's quirk, I'll steal yours instead. 

Y/N's eyes glow red as what seems like red energy comes from Izuku's body and flows into Y/N.

Shadow: Crap, this bad! He's gonna steal Midoriya's quirk! 

All Might: No! 

All For One: Yes, that's it my boy. With One For All in our possession, the heroes have no hope of stopping us. 

Wyvern: Y/N, don't do this!

Y/N: It's over, Izu- 

Suddenly, he was cut off as he was seen in some-sort of vestige world. 

Y/N: (thoughts) W-What is this? Where am I? 

He looked around before he spots a figure who was in front of him. The figure starts to slowly appear. The figure fully manifests as Y/N was met with a tall beautiful, and well-built woman with black hair, wearing a hero costume.

Y/N: (thoughts) W-Who is that? 

The woman walked up to Y/N before she did what surprised him. He pulled him into a hug, placing his head onto her breasts. 

He was confused, he felt such warmth from her hug which he never felt in a long time. His body moved on its own as he hugged back. 

Y/N: (thoughts) What's going on? This woman... the way she hugged me.... it reminds me of... mum.

Back at reality, suddenly, Y/N was forced back from an unknown force, causing to let go of Izuku who fell to the ground, much to his and everyone's shock.

Y/N: (thoughts, confused) The hell? W-What was that? I can't take it? No, (looks at his hands) I know I have more than enough storage for All For One. (looks at Izuku) Something is off with him, and it's not just One For All. It's as if he has more than one quirk as well. His very existence is a miracle.

He readies his left hand as he prepared to use Air Wall on Izuku. 

Y/N: (thoughts) Which means... I must eliminate him. 

But before he could do it, he was knocked off by Shadow and Cynthia jumping in to grab Arc, Wanda, and Izuku away from the fight.

Arcturus and Wanda: Ma...

Wyvern: (tears in her eyes) Don't you dare do that again, young man! You're grounded for life after this!

Arcturus: I'm sorry, we just couldn't—

He stops when Cynthia pulls he and Wanda in a tight hug. After a bit, they return the hug.

Wanda: We already lost Y/N once, we didn't want to lose him again. 

Arcturus: And we couldn't lose you, too.

Wyvern: I know. But I don't want you to die either.

Over with All Might, he then clenches his hand and charges up his right arm.

All Might: Thank you, young Farron, young Maximoff, and you, young Midoriya. But I'm not done, yet. (to All For One) You were right. A hero has so much to protect in this world. Which is why I will defeat you!

Despite saying that, only the muscles on his right side had formed while the rest of his body was still weak.

Y/N: He's still keep fighting despite his weakened state? 

All For One: There it is. That's the last of your strength, isn't it, All Might? A wounded hero is a most frightening animal. Do you know that even now I sometimes dream of you charging at me with your entrails strewn across the ground? (charges up for another attack) You have, what, two or three punches left?

He then blocks a blast of flames fired at him. They look and saw Endeavor had arrived.

Endeavor: Are you serious? What the hell's going on with that weak little body?!

Edgeshot: (lands beside him) Looks like we made it in time. Tsukauchi must've expected this. He feared for his friend's life.

All For One: Hm. Those Nomu weren't particularly strong, but I'm still impressed you handled them so quickly. As expected from the man who clawed his way to the number two spot. At least, only because you were practically handed it after the first one died.

Endeavor: Damnit, All Might. I did everything I could to get ahead of you. But the harder I worked, the more obvious became just how much of a widening gap separated the two of us. The stronger you got, the angrier I became. (remembers Shoto and Rei) STAND UP AND SHOW THEM WHY YOU'RE BETTER!!!

All Might: Endeavor...

Shadow: Huh. Him cheering All Might on? It really must be a cold day in Hell.

All For One: If you're really just here to cheer him on, I prefer if you remain silent.

Before he could attack, Edgeshot zooms in and attacks.

Edgeshot: Think again, madman. We're here to assist. Then, the other pro heroes from the attacks arrive in to help the injured and get them to safety.

Kami Woods: That's our job as heroes! (pulls his partner close) You did your best, Mt. Lady.

All Might: All of you came...

Tiger: (helps woman out of the rubble) Of course we did. We can't do much, but if we can just help a little...then we have fulfilled our duty.

All Might: Thank you.

The rest of the pros encourage All Might to fight as they helped fight against All For One. And just like Arc said, the world was cheering him on to keep fighting and still win no matter what. 

All For One: How pointless. 

All For One then fires a powerful Air Cannon at the ground which creates a shockwave of debris and sends everyone except for All Might back.

All for One: Let's stop dwelling on heroism and start focusing on reality.

Suddenly, All For One's arm starts to grow larger with multiple spike coming out as he combines all of the Quirks he has taken this whole time together.

All For One: Springlike Limbs, Kinetic Booster x4, Strength Enhancer x3, Multiplier, Hypertrophy, Rivets, Air Walk, Spearlike Bones. The shockwaves until now were simply to wear you out. I knew it would take much more than that to kill you. In order to put you down for good, 

I'll punch you with the ultimate combination of quirks I have stored up within me right now. This will end you.

Despite the disgusting appearance, All Might stood ready to fight.

All For One: I wasn't certain until we exchanged blows tonight, All Might. But now I am. One For All no longer dwells within you. What you're attacking me with is just a lingering ghost. The embers that remain from what you've already passed on. And that fire gets weaker every time you use it. Even now, it's a feeble spark about to put itself out. 

All For One then brings his fist back and then dashes towards All Might.

All For One: Izuku Midoriya!

All Might: (gasps)

All For One: He's the child you passed One For All on to, isn't he? I bet he came here to try and bring back Y/N without your asking. You have no control over him or Arcturus Farron, do you? It sounds as though you'll die full of regrets, All Might. As a hero and as a teacher!

The two collided with both of their punches as even reality seems to wrap at the power between the two symbols, crating a massive explosion. 

All For One: Impact Recoil!

Blood started to break out of All Might's arm as All For One pushes further, breaking All Might's arm and pushing him back, As All Might fights on, he thinks about Izuku.

All Might: I'll beat you, not because I'm a symbol, but because I will do as my master did for me. Until I finish training Young Midoriya...

He's stopped being pushed back, but readies his own attack.

(Cue United States of Smash)

https://youtu.be/Dbzlte_EaWQ

All Might: Until he's ready...

All For One: It's embarrassing how much you're resisting.

All Might: (begins to bulk up left arm) ...I won't...

All For One: Perhaps I was wrong.

All Might: (shrinks right arm, passes by attack) I refuse to die! He lands a solid hit with his left arm right into All For One's face.

Gran Torino saw this and realized he transfer the power from his right to his left, and finally lands a solid hit onto All For One.

All For One: A clever trick. That's so unlike you. Still weak, though!

All For One then charges up his Air Cannon on his opposite arm, but suddenly All Might's left arm deflates, as he transfers his power back into his right arm.

All Might: That's because I didn't put my back into it that time!

Taking a page from Izuku's book, he readies his right arm again as he hears his master passing the power to him.  

Nana: This power has been passed on from hero to hero. Each praying that it will bring joy and peace to humanity. That One For All will give the world hope. And now it is your turn. Do your best Toshinori.

She holds out the power to him, and All Might clenches his right fist and bulks up his entire right side for one more attack. The final blow to end this fight.

(If you aren't here already, move to 1:55 for the epic feeling)

All Might: (determined) RRRAAAAAAAAAAAAAAAAGGGGGGGGGGHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!! (thoughts) Goodbye, All For One.

All Might plants his foot down, twists his body, and lands the most devastating punch in the world right into All For One's face.

All Might: UNITED STATE OF SMAAAAAAAASSSSSSSHHHHHHH!!!!!!!!!!!!

The attack sends All For One into the ground, created a large tornado that rips apart the area and destroyed more of the ground. As it finishes, All Might feels the last of his power fading.

(music ends) 

All Might: (thoughts) Goodbye, One For All.

Everyone was in silence. All on the edge of their seat. Many begging that that last attack was more than to end the fight. Then, very weakly, All Might raises his left arm, makes a fist, and bulks up.

Everyone was cheering and crying as All Might stood victorious. He goes into full muscle form before stumbling a bit.

Edgeshot: He shouldn't push himself.

Gran Torino: Let him be. He's still working. This is his last job. (thoughts) A final act as the Symbol of Justice and Peace, and the number-one hero.

Shadow: (to Endeavor) Welp, congratulations, sir. You finally got what you wanted.

Endeavor doesn't respond as people were chanting All Might's name.

???: No... 

Soon, everyone stopped cheering as they saw Y/N slowly walking towards the heroes while his wounds finished healing up.  

Y/N: Not yet... there's still me left.

Wyvern: Y/N... 

Shadow: He's stubborn to admit defeat, just like Richard. 

His path was then blocked by Hitomi who in front of him, she was looking at him with tears in her eyes while putting a force field to protect them. 

Hitomi: (crying) Please, stop this Y/N. I don't want to fight you, much less even hurt you again.

Y/N gets even angry with his eyes glowing red with rage.

Y/N: You don't want to hurt me? (rage and heartbroken) YOU ALREADY DID HURT ME!!! (starts hitting the barrier) CAN YOU IMAGINE HOW I FELT WHEN THE GIRL I FELL IN LOVE WITH DECIDE TO REJECT ME BECAUSE I MADE THE SHITTY MISTAKE OF SAYING SOMETHING I WANTED TO HAPPEN?!?!?!?! BECAUSE I LOVED HER WITH ALL MY HEART AND WANTED TO BE WITH HER ONLY FOR HER TO SEND ME A VIDEO OF HER FUCKING SOMEONE WHO'S MADE MY LIFE A LIVING HELL!!!! 

Cynthia and Arc looked in sadness while Wanda starts crying. 

Y/N: AND TO MAKE IT EVEN MORE WORSE, SHE CALLS ME FUCKING VILLAIN JUST FOR FIGHTING BACK AGAINST MY TORMENTOR CAUSE AFTER AL ONLY A TRUE VILLAIN WOULD THINK THAT!!!! AM I RIGHT HITOMI?!?!?!?!

Hitomi breaks down even more with tears coming down on her face.  

Y/N: YOU REALLY WANT KNOW WHAT HURTS EVEN MORE EVEN?!?!? AFTER WHAT YOU BOTH DID TO ME?!?!?!?!

Hitomi looks at Y/N with tears going down her face while nodding her head. 

Y/N: ITS THE FACT THAT I STILL LOVE YOU AND WANT TO BE WITH YOU DESPITE EVERYTHING THAT YOU BOTH DID TO ME!!!!!

Y/N stops hitting the barrier, still staying while having his hands on it. Hitomi places her hand where Y/N's right hand is while the barrier is still on while tears her still going down her face. 

Hitomi: (crying)  I'm so sorry Y/N, for everything... I never meant to hurt you that way. I should have never hurt like that at all...

Y/N gasped as he can tell she still really cared for him. Before he could move to him, All For One used his remaining strength and used Warping on Y/N as his body was covered in sludge.

Y/N: W-Wha?! 

Hitomi, Arcturus, Wanda, and Cynthia: Y/N!

All For One: Take care Young L/N... Tomura will need guidance as will the others... look after them... I leave the rest to you, my boy...

As Y/N's body was almost completely enveloped in the Warping sludge, he tries to reach out as he called out to the man who rescued him, not out of despair, but as a lost child calling out to their parent.

Y/N: ALL FOR ONE!!!!!!!!

And the last thing Y/N saw before he was warped away, was a smile on All For One's face.

Hitomi went after him, but she was too late as he was warped away. She missed her chance to confess her true feelings for Y/N, and tell the truth behind of what she did with Bakugo.

Hitomi: (thoughts, crying) Why didn't I just tell Y/N that I love him? If I had just told him the truth, this never would have happened. And most of all, I would've had the chance to be with him right now. (falls to the ground while hugging herself with tears falling down her face) This is all my fault for what happened to him. 

Chapter 19 ended. 

Woah! That was a blast! That was both epic and emotional. And with that, the Kamino arc is done. 

I know some of you might not like what I did with the chapter, but I will say this: This is my story, I make my own decisions. If you make it even worse, I'll block or mute you. That's fair. 

Anyway, if you guys have any ideas for the next chapter, let me know at the comments below. Peace out and enjoy!