The scene starts off with Arc and the others moving with the evacuation group. Once they landed, they went in with the others to escape the chaos. They called Todoroki and Momo and told them they were just near the station and the rescue was a success.

Katsuki: A rescue?! That's not what happened back there. You idiots just happened to be our best escape route.

Arcturus: (deadpanned) Fuck you too, asshole.

Kirishima: (thumbs up) You're welcome!

Katsuki : We needed to get away so All Might and Wyvern could destroy those guys.

Wanda: That was still a crazy plan of yours. (smiles) But regardless, thanks for the save, guys.

Both the Farron siblings, Hitomi, Momo, and Izuku look back as the smoke coming from the direction they came from. Izuku notices Arc's look and put a hand on his shoulder.

Izuku: You're thinking about him aren't you?

Arcturus: Yeah...

Wanda: I ca't believe. After all this time he's alive... but he's...

Izuku: Hey, don't worry. All Might and Wyvern will stop him and bring Y/N home. I'm sure of it.

Momo: I hope so. 

Arcturus: Me two. (looks at Hitomi and Katsuki with a serious expression) Is what he said true? You two are the reason Y/N became a villain? 

Hitomi: (sad) Y-Yes... 

Arcturus: (glares at Katsuki) And you forced her into doing it? 

Katsuki: That's not-

Arcturus punched Katsuki at the face, surprising everyone before he grabbed him by the shirt. 

Arcturus: (angry) You bastard! Do you realize what you've done?! Because of your actions, he's hellbent on killing you and taking your quirk! 

Iida: Farron, calm down! 

Kirishima: Yeah, relax! 

Izuku: Arc, listen. I know what Kacchan did was wrong, maybe unforgivable, but now's not the time to get mad at him. 

Wanda: He's right. We just have to hope Ma and All Might will defeat All For One and bring Y/N back, we'll try our best to convince onto the right path. 

Arcturus: Tch. (lets go of Katsuki) Alright. Now, let's just hope they can win this. (thoughts) Gran Torino and Shadow can help them. But still... Why do I have this bad feeling in my gut?

(with All Might) 

Back in the fight, All Might and Wyvern were still in the same positions as before while the symbol of evil keeps talking shit about All Might's former master and old friend.

All For One: You both have so much in common with Nana Shimura, the utter waste of a human who passed One For All on to you, and Claire Farron, the dear friend who left behind her children under your care.

All Might: My master and best friend were true heroes! Keep their names out of your filthy mouth.

All For One: Two women with no skill, and grand ideas neither of them could live up to. How embarrassing for me, the creator of One For All, to see Nana inherit the power. Even the famous Lightning wasn't worthy of it. And the way they died was so pathetic. Shall I tell you all about it?

All Might and Wyvern: (furious) ENOUGH!!!

They get ready to throw more attacks, but with a quick flick of his wrist, All For One blast them with Air Cannon as they go flying up above which made All Might caught blood. They nearly hit a news chopper nearby, but Shadow teleports them away. Gran Torino joins them by their sides.  

Gran Torino: It's the same as last time. Toshinori. Calm down!

Shadow: Neither of you can afford to get distracted right now. I may not have been there, but I know the same thing happened six years ago. That's how he won and put a hole in your stomach, All Might.

They dodge another attack and land on the ground.

Gran Torino: (to All Might) That's always been your weakness. Don't let him get under your skin!  

All Might: Yes, sir.

Wyvern: His quirks and fighting style are different than when you described them. Which means we can't stop him head on.

Gran Torino: Can you still fight. It's do-or-die. You must go past your limit!

All Might: I will.

Up above in the helicopter, the news reporter is commenting on the destruction that's being caused.

News Reporter: The scene below is straight out of a nightmare. Half of Kamino Ward destroyed in a single horrifying instant. All Might and Wyvern are currently fighting the villain who appears to have causes the blast. I can't believe it, how is one person so powerful?! He's destroyed the city and is holding more than his own against the symbol of peace! 

Everyone was watching and shocked of the fight. Some believed that they'll win, and others claiming that the other heroes were going soft. But regardless of the reason, no one could take their eyes off the screen.

All For One: I find myself conflicted. Tomura has been the one to chip away at societies trust in heroes, but Y/N has been working in the shadows, slowly but steadily gaining strength. So, should it be fair that I am the one to deal the final blow? You know, All Might, as much as you hate me, I think I probably loathe you more. I killed your master, sure. But you took away so much from me, everything I tried to build. That's why I want you to suffer until your last breath, and die broken and disgraced, for all the world to see.

All For One's right arm starts to expand, charging up a bigger Air Cannon blast. 

Gran Torino: Big one's coming! Dodge and counter!

Shadow: Right!

They run off, but they weren't the target.

All For One: Not everyone's so fast.

All Might realizes what he means and saw a woman nearby, injured, and trapped in the rubble.

Wyvern: All Might!

Gran Torino: Watch out!

Shadow: Shit!

All For One: I will obliterate everything you try to protect!

All For One then shot off a massive Air Cannon at All Might who didn't dodge it, protecting the woman behind him. All Might blocks the attack with his left arm, but it causes a massive explosion and fills the whole area with smoke. 

All For One: First to go will be your self-respect, and ridiculous public image. 

Show the world how pitiful you really are, "Symbol of Peace."

All Might was standing in place, but was now in his skinnier form with his sleeves destroyed, costume damaged, and blood on his hands and head. 

Everyone watched as his real form was shown and people were shocked by the state he was in. Arc and Izuku were especially horrified as they realized he couldn't hide the secret anymore. 

Izuku: (thoughts) All Might... Your secret!

Arcturus: (thoughts) Now everyone knows!

In the fight, All For One continues to taunt him.

All For One: Hollow cheeks and sunken eyes. To think that you're their greatest hero. Now the adoring public knows your true form. Try not to be ashamed. Your move.

Despite his state, All Might held his ground.

All Might: Even as my body rots and grows frail. Even as you expose my weakened state. (clenches his fist) In my heart, I remain the Symbol of Peace. And there's nothing you can do to take that from me.

All For One: Is that so? Ah, well. I'd forgotten how stubborn you are. I guess I'll just give up. Oh! But there is one thing you might be interested to know. Tomura Shigaraki? My first appearance? He's Nana Shimura's grandson. 

Everyone stops and are in shock by his words. 

All Might especially looks horrified as his eyes widen.

Wyvern: What?

Shadow: Her...grandson?

All For One: I kept wondering what would annihilate your golden heart. And so I found Tomura. Groomed him to hate you, and watch you smile so proudly as you beat your master's descendant.

All Might: (quietly) T-That's a lie...

All For One: Oh, come now. You know it's the truth. That is clearly something I would do.

All Might was still processing it that he was looking more depressed.

All For One: Huh! Well, well. That's strange, All Might. (mockingly makes a smile) 

Where is your smile now? (dark chuckles)

All Might was beginning to shake as he was still horrified by the reveal.

All Might: (shocked) You...bastard.

All For One: (laughs) How very entertaining. I think I've taken a piece of you after all.

All Might: (somber) She's my master's grandchild... My god, what would she say if she knew how we turned out?! (screams in agony)

Shadow and Cynthia then run in and began attacking All For One.

Wyvern: (furious) How dare you! You took his master's grandson and made him a monster! 

Shadow: (furious) Scum like you don't deserve to breathe! You'll pay for everything you've done!

The two are the stopped by Bullet Lasers coming towards them, causing the two to dodge. Some debris moved, causing them and All For One to look that way. As the debris moved, it's revealed to be Y/N as he let out a few coughs as he got to his feet.

Wyvern: (surprised) Y/N... 

All For One:  Hmmm? What's this? Young L/N, why are you still here? You are supposed to be with Tomura and the others.

Y/N: Yeah, but... I had my own plans, and I wasn't gonna let you get in the way of that.

All For One: I'm impressed with your resolve, but it's seems I would have to deal with you later. For now, I must focus my attention to our now broken hero.

Y/N: Huh?

As Y/N looked in the direction his master was looking at, his eyes widen as he saw how All Might looked. He believed that All Might was unbeatable force of good, but he had been proven wrong as he saw him now.

Y/N: (shocked) That's... All Might? 

All For One: (chuckles) Indeed it is. A great hero now reduced to nothing but a broken man.

Y/N: (sees Wyvern) You... 

Wyvern: It has to be trick, it just has to be. 

Y/N: It's no trick, Cynthia, I really am here. 

Wyvern: (shocked) H-How is that possible? What... 

Y/N: What am I even doing here with All For One? I guess I won't mind telling you a few things.... For starters it, was All For One who found me and saved me when I really thought I didn't have anyone. Even when I was quirkless. Second of all, it's also because of him I now have a power of my own like all of you who do have one. Not be powerless like those who don't get bullied for not having one. My third reason, I can't just let you hurt someone who gave me a reason to live and be stronger than I was back then. And as for my fourth and final reason, you can ask Bakugo and Hitomi on why I'm even doing this in the first place. 

Wyvern: But you're Richard's son who was a hero, why would take the life of a villain? 

Y/N: A hero? Are you referring to the false heroes on Japan? 

Wyvern: What? 

Y/N: I've seen how it works. These so-called "heroes" don't really care about saving people, they just did it for the fame and glory. I would consider Arc, Izuku, Endeavor's son, and the other two real heroes since they took down the Hero Killer Stain. They did what's right and the heroes failed to do it.

Wyvern: That maybe true, but they weren't Pro heroes-

Y/N: So what? The police only enforced that law to make the people relied on the heroes to do everything, creating more fake heroes, and in the process make villains more and more cruel and dangerous. This is more like an oppressed system to me. 

Wyvern: That's not true! 

Y/N: Isn't it? Take Magneto for example. (points at Magneto) He is a broken hero with all the stuff suffered and wants to help his kind, especially his own daughter Wanda. I bet the heroes known who is Wanda's birth parents, and maybe they took her away from him. 

Wyvern: No, that's not what happened. 

Y/N: Then tell, what really happened that day? 

Wyvern: It's... 

Y/N: So, you've been keeping secrets from not only me, but Arc and Wanda as well. You disappoint me, Cynthia, truely. I thought you were better, but I guess I was wrong. It seems you have been corrupted by the oppress system as well. 

Wyvern: Y/N, listen-  

Suddenly, she blasted away by Air Cannon coming from Y/N. 

Y/N: I'm done listening to you. (starts flowing nit the air) 

If you are still under control of this oppress system, then I'll purge you myself. 

All For One: That's it, my boy. Show them why you were chosen as my successor. 

New Reporter: What's this!? Another villain has appeared on the battlefield! One of them was already back enough, but now there are two!

As the camera captures Y/N on live television, people start to get even more worried now. AFO already did enough damage, but with Y/N now on the scene who knows what will happen. 

In a hospital room far from the battle, Inko sat in Maria's hospital room as she watched the news. She prayed that her children were safe from whatever was going on, but then she saw the face of the boy she loved like her own children at the side of the most dangerous villain to ever exist.

Inko: (shocked beyond belief) Y...Y/N...? 

But it wasn't just her, Kyoka and Mina were also saw this as Mina was on the verge of tears while Kyoka was holding her. 

Mina: (crying) It's not true... it can't be... 

Kyoka: Y/N... 

Back on the battlefield, Y/N unleashes Bullet Lasers from his fingers at Shadow who dodges them. Shadow unleashes his chaos blasts, but he blocks them with Air Wall. 

Y/N: You think mere energy blasts will touch me? 

Shadow: Maybe not, but now I've studied your attack pattern. You start off by firing long-range attacks like All For One, then block other long rang attacks with some defensive quirks. 

Y/N fires an Air Cannon at Shadow while he counters it with Chaos Spear, causing an explosion. 

Shadow: As for close-combat, you used quirks to increase your muscles or gaining spike from it. 

Shadow, quickly reacts by boosting himself to the left where Y/N was unguarded, but Y/N quickly turns to Shadow and tries to attack with his Air Wall. Shadow forcefully moves away Nine's hand with a round house kick and prepares to attack with a clean hit.

Shadow: It's a shame you don't have speed-type quirk like your brother does! 

Suddenly, before Shadow could attack, he was soon pushed away by a blue blur raising him high up into the air. The blue blur was revealed to be a dragon like creature that emerged from Y/N's back, another one of Y/N's multiple Quirks, Hydra.

Y/N then commands his Hydra and slams Shadow who was still inside of the Hydra's mouth into the ground. As the cloud of dust start to fade away, it reveals Shadow who was still trapped in the Hydra's mouth while also being crushed.

Shadow: (thoughts) Damn it! He broke my ribs!

Wyvern: Shadow! 

Y/N: You just won't stop barking!

Y/N then commands the Hydra to crush Shadow with even more strength.

Wyvern: Fire Dragon Roar!

Wyvern unleashes a torrent of flames from her mouth at Y/N, but he blast the flames away with Air Cannon. 

Shadow: CHAOS BLAST!!

Shadow unleashes a blast of chaos energy to destroy the Hydra, freeing himself in the process. 

Wyvern: Are you alright? 

Shadow: I'll be fine. Richard's kid is stronger than he looks. 

All For One: You truly think you can win, Shadow? You may have killed before, but how many lives did you sacrifice for the greater good? And how many people did you really save? I mean, you couldn't even save your dear brother in arms when he needed you the most.

This makes Shadow think back to when he was a kid.

(flashback)

Young Adrian: You still wanna be a hero?

???: Yeah! I'll prove to dad that I'll be the best hero no matter what! I mean, that's why he was training me so much before, right? 

(flashback 2) 

A news report goes on about a fire happening on the mountain. Adrian watches the news in horror as he soon runs off to the mountain. When arriving, the whole placed was charred with no signs of life and just ash. 

(flashback ended) 

Shadow: (thoughts) How does he know that? I made sure no one knows my personal life.

Wyvern: Don't listen to him, Shadow! Neither should you, All Might! We need to keep—

She's interrupted by getting stabbed in the stomach. She looks over and sees Y/N having his tendrils fired at her. 

Y/N: GET OVER HERE!!! 

He pulls her toward him as he grabbed her by the neck before using Muscle Argument to increase his strength, choking her. 

All Might and Shadow: WYVERN!!! 

Over with the others, people gasp at seeing this. The kids, especially, as they feared for their teacher.

Izuku: Oh no!

Wanda: Ma!

Hitomi's hands moved to cover her mouth as she stared at the TV, seeing Y/N was going to kill a hero.

Hitomi: Y/N, please stop! 

Katsuki: (thoughts) Did I really do this...? Was my goal... of being the number 1 hero... ended up creating a monster out of him...? 

Seeing Cynthia getting impaled and choked by his brother made something snap in Arc. He couldn't hear anything else and felt an absolute sense of dread of losing someone again.

Arcturus: He's gonna end up killing her at this right... (clenched his fist) No... Not again... NOT AGAIN!!!

Arc suddenly turns and takes off in blue lightning. It takes the others a bit to realize what he's doing.

Izuku: Arc, wait!

Iida: Don't go, Farron! It's too dangerous!

Kirishima: Get back here!

Katsuki: You'll get killed, ya damn bastard!

Wanda: (thoughts) Ma... Arc... Y/N... (clenched her fist) I can't wait in the sidelines anymore, I have to bring him back home! 

Izuku gripped his fist. There were multiple things running through his mind at the moment but only one matter. Just then, Izuku picked up Wanda and bolted away from the crowed area headed towards the raging battle ahead.

Hitomi: (thoughts) They're not going after All For One to save All Might and Wyvern, they're going to save Y/N. (clenched her hand) I promised I would apologize to him, and I'm gonna do it right now.  

With Arc, he kept running as fast as he could.

Arcturus: (thoughts) My legs are running on their own. Even if they weren't, I gotta do something! I can't lose one of my moms and Y/N again!

Arcturus: (narrator) I remember how it felt that day. It made me recall what All Might told Izuku on the day we met. 

(flashback) 

All Might: There are stories about every hero. How they became great. Most of them have one thing in common; their bodies moved before they had a chance to think. Almost on their own. 

(flashback ended) 

Arcturus: (narrator) On that day, that's when I had that moment. Even if I was scared and knew I couldn't beat them, all I knew was my mother, my mentor, and my teacher were in danger, and I needed to do something. I already lost Y/N before, I wasn't going to do it again. And in that moment, I ran faster than I had ever ran before.

With a yell, Arc runs faster, leaving a blur of blue lighting.

(with Y/N) 

All For One approaches Cynthia as she was struggling to break free from Y/N's grasp.

All For One: Your quirk is very fascinating, my dear. Just so you know, I'm going to take it, and then I'm going after your children to take their quirks and lives. And just to make it more fun, why don't you die the same way Cla—

He stops when the sound of thunder was heard. Then, the next thing he knows, he hit by something going so fast, it not only knocks him back, but creates a shockwave that makes nearly everyone go deaf from the sheer force of the wind. 

Before he could get up, he's hit again and again by the speed. It turned out to be Arcturus going faster than before.

Arcturus: Faster!

More punches were thrown.

Arcturus: Gotta go faster!

His speed increased to the point the roads he ran on were being destroyed and the wind was increasing, sending stuff flying. All For One gets hit with more punches and kicks, until he finally regains his footing and catches the last punch Arc threw. The force from it still shot back behind him. 

All For One: There you are. 

Y/N & Wyvern: (shocked) Arc?!

All Might: Young Farron?! What do you think you're doing?!

Shadow: You idiot! Get outta here!

Arc jumps back and stands ready against All For One. All For One then lowers his mask briefly and spits out a tooth.

All For One: Not bad, boy. Even those other blows didn't break my teeth. (beat) So, you're the famous Arcturus Farron. The Sapphire Speedster against Tomura Shigaraki. I must admit, I'm humbled you came all this way to fight me. However, surely you know that not even All Might can defeat me. So, what do you plan to do?

Arcturus: (thoughts) I'm scared right now. No, I'm terrified. This is worse than when I first fought Stain. But even so...

He takes a stance and charges up his quirk.

Arcturus: My plan is to stand up for what's right! I know I can't truly beat you, but I can at least give it my all! You wanna know something? You set all of this up just to make the world lose faith in All Might, right? Well, guess what? It's not working! People right now are cheering for him to fight! To win this! Even at his weakest, they believe in him! They still see him as the world's greatest hero! So, if your big plan was to really break their belief in the true heroes like All Might, (smile) then you're honestly pretty weak!

That last sentence makes All For One remember someone saying the same thing. 

(flashback) 

Claire: You're honestly pretty weak. 

(flashback ended) 

All For One: So, you think I'm weak, do you? (readies attacks) Then allow me to show you how strong I am!

He unleashes his Air Cannon at Arc, and he dodges them while running in and they trade blows. For a bit, they keep fighting until All For One grabs Arc by the neck and slams him to the ground. Picking him up, he gets ready for the kill.

All For One: You're just like your mother; a cocky little prick to the very end.

Arcturus: (choking) Well, I take after my parents.

All For One: Oh yes, I'm aware. In fact, Lightning said those words to me about being weak.

Arcturus: What?

All For One: Wyvern never told you? No surprise, considering you were full of so much anger and hate back then. Well, let me tell you a little secret. Six years, when All Might defeated me, he didn't do it alone. You see, he had a friend, a woman with electricity so dangerous that many ran in fear of it. That same woman was the number 2 hero for many years. It was her actions that helped All Might injure me, but not before I wounded her so badly to the point where she died of her injuries. In other words, it was I who killed your mother, Claire Farron. 

Y/N and Arcturus: (shocked) W-W-What...? 

Arcturus's eyes widen by that as he now realizes the man who killed his mother was now right in front of him. However, it would go so well by the end.

All For One: I wasn't able to take her quirky, unfortunately. However, know that I will put yours to good use.

Wyvern: Arc!

Shadow: No!

All Might: GET AWAY FROM HIM!!

All For One touches Arc's head, and begins to take his power. However, something happens that no one could predict.

Arcturus: Let go of me!

Y/N: Wait, this is not what we agreed on! 

Arcturus: Let go!

All For One: Don't struggle.

Arcturus: (determined) I SAID LET GO!!!!

All the sudden, a bunch of golden chains shoot out of Arc and they damage All For One. Everyone is shocked by the power and All For One is getting injured.

All For One: WHAT?!?!?!

Y/N: What the hell?! 

Arc lands on the ground, charges up, and hits him with an uppercut that knocks him back. As he's knocked back, Arc looks at his hands to see the lightning and the chains moving around him. The tips were bladed, making them more as whips.

Arcturus: What is this? Did my quirk change somehow?

His head begins to hurt, and the next thing he knows, he standing in a wasteland where various weapons were planted in the ground. Ahead of him was a woman and seven other shadowy figures with glowing yellow eyes behind her.

Arcturus: (thoughts) What's going on? Am I dreaming or something? No, wait a minute. It's like when Izuku was tapping into One For All for the first time. If so, then why am I seeing this? And more importantly, why does one of these people... look like my Dad?

The image fades and he's back in reality as the quirks deactivate. All For One then stands up, recovering from the attacks. However, based on his body language, he's more confused than injured. 

All For One: What's this? A few of my quirks are gone? No... They've been destroyed completely! But the only thing that can do that is—

He suddenly gasps, and then begins laughing. Soon, it turned into a fully-blown laughter as he reels his head back.

All For One: Of course! How did I not see this before?! Not only did All Might have his precious successor hold his quirk, but also trained the one with the very power of destroying that quirk! After all these years, it's right in front of me! (ecstatic) I'VE FOUND YOU AT LONG LAST, BIG SISTER!!!

Y/N: (thoughts, confused) Big sister? 

He runs towards Arc, but he was knocked by a blast of crimson energy as everyone turned to see Wanda. 

Arcturus, Y/N, and Wyvern: (shocked) Wanda?! 

Wanda: My brother alone, All For One!

Before Y/N could ask, he suddenly tackled which made him release Wyvern, and the culprit of this sneak attack...? Izuku Midoryia. Y/N was caught off guard by this sudden action and both boys go crashing and tumbling across the ground.

All Might: Y-Young Midoryia!

As they tumble across the ground, Y/N and Izuku both hop to their feet and as they do, Y/N lifts his head glares at the one person he considers his friend as Arc and Wanda came beside him.

Wanda: (holds Arc) Are you okay? 

Arcturus: I'm alright, but my head was killing me...

Y/N: Arc... Wanda... Izuku... what are you doing here?!

Izuku: We're here... to stop you!

Y/N: Stop me? 

Wanda: We can't let you do this Y/N! T-This isn't you!

Y/N: This is me now, so get used to it! You can't just expect me to go back to the way I was!

The trio knew that Y/N's words are right, but they still had hope that things could change, that Y/N could change.

Wanda: Y/N, please.... we don't want to fight you...

Y/N: Then get out of my way... 

Arcturus: You knew we can't...

Y/N and the trio stare at each other as they get ready to stand off. 

All For One: Well now this is quite the spectacle, won't you agree All Might? Your successor, Magneto's daughter, and Claire's son against my successor. I wonder who will win...

Izuku: Wanda, take care of Arc. I'll hold him off. 

Wanda: I will, be careful.

Izuku focused the power and One for All and spread throughout his entire body.

Izuku: One For All: Full Cowl! 

Before Y/N could question on what Izuku just did, he sprints towards Y/N with incredible speed, taking him off guard and barely giving him enough time to properly defend. As Y/N gets pushed back, Izuku bounces all around him, hitting him at every change he has.

Y/N: (thoughts) How is he so fucking fast all of a sudden?!

He was hit in the back but as he goes to swing at Izuku, he's already gone and gets hits again.

Y/N: (thoughts) What did he do to gain such speed?! He's as fast, if not, faster than Arc!

As he keeps getting hit, Y/N swings his arm using Air Cannon in conjunction as the blast blows Izuku off his feet. As Izuku gains his footing, Y/N comes jumping in as he slams his fist into the ground. Luckily, Izuku was able to backflip just in time to dodge his attack.

Izuku doesn't waste anytime and continues his attack on Y/N. He's able to duck and dodge some of his hits, but Izuku is able to deal some blows to Y/N. As Y/N stumbles back from the hits he took, Izuku charges up for a smash and feels his fist back.

Izuku: 5% Detroit Smash!

As his fist makes contact with Y/N, a strong gust of wind causing some slight damage as Izuku catches his breath. But his attack didn't work as he thought as he had made contact with a hard surface.

As the smoke cleared, Y/N had grabbed Izuku wrist as Bone Protrusion was used as a sort of armor to protect himself.

Y/N: Bone Protrusion + Shock Absorption. Ya know... (smirk) it took me a minute to understand why you got so strong suddenly...

Izuku: (confused) W-What?

Y/N let's out a dark chuckle as his eyes glow red. Red and black lines suddenly start to slowly appear on Y/N's down as it spreads to every part of him. Izuku's eyes widen as he sees what's happening and quickly manages to pull away from him and jump back.

Y/n: Thanks to you, I was able to put together what you did. Thank you, Izu....

Izuku gets a bit nervous as he prepares himself to what Y/N has in store for him.

Y/N: What did you call it? One For All: Full Cowl? (light chuckles) Not a bad name, but I'll need one of my own... Hmm... Yeah, that's a good one. All For One: Dark Emergence.

(I know this is from Roblox, don't flame me)

Arcturus: (surprised) All For One: Dark Emergence? 

Wanda: (thoughts) Wait, what is One For All? 

Izuku: (thoughts) H-How?! How is this possible? This is bad... this is very, very bad... if Y/N can copy my Full Cowl, what else is he capable of...?

Y/N: Come on Izuku, let's see who's grown in strength. You...

.... Or me...

Chapter 18 ended. 

I hope guys like that one. Especially with what I did. And yes, Arc has a special quirk similar to One For All. For those who haven't read Chaos and All fanfic, I'll explain about it later after the Kamino arc is over. 

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