My name is Isaac Midoriya. I am the Number One hero of the State of California, but I wasn't always that. As a child, I was merely a Quirkless kid born Izuku Midoriya. After I was diagnosed as such, kids in kindergarten started to bully me. My mother, in response, decided to move in with my father in his workplace at Los Angeles, in America.

I grew up in the city, until one day, during a visit on I-Island, I met the Japanese Number One Hero, All Might. To make a long story short, I tried to save someone from an accident, despite being Quirkless, and that caught his attention. He offered me his power, and I started my journey.

It was an interesting adventure. I found out there were extra Quirks inside my body, got my American citizenship and changed my name, fought All for One's heir, saved the country, and then… I found more.

I found the Multiverse. A system of infinite possibility. Magic. Science. Quirks. All of it was there, just beyond the veil of my reality.

It fascinated me. It frightened me.

I'm the Number One Hero of California and the founder of the League for All.

And there is nothing else I would rather be.

Izuku walked through the door of Isaac's office the moment it opened, with Zuzu's holograms in tow. There would have been a point where he would have been intimidated by the sight he saw inside. Isaac Midoriya was now wearing his full Star Might costume. Reminiscent of All Might's Silver Age design, it featured a primarily red color, with a large white star in the front, a blue cape held up by two additional white stars, and blue pants with white stripes. White gloves and red shoes completed the design. It screamed America in every possible way, even more than All Might's costume did.

But right now, he had questions to ask, so he just moved forward.

"Izuku. Isn't it a bit early in the morning? Zuzu?" The man asked, looking at him and then at the AI hologram. Izuku caught him folding the newspaper he was reading and putting down a mug of coffee.

The AI bowed apologetically, "I'm sorry Mister Isaac, but he asked if you were around and…"

"Mister Midoriya, we need to talk." Izuku interrupted.

"Just call me Isaac kid." The Hero replied with a condescending smile, "What has you so heated up? Bad dream?"

"What is a Circular Current?"

The man stopped in his tracks, his eyes going wide in surprise before the realization seemed to hit him at once. He grunted. "Izzzuku."

"Nice way to bust me right away pal!" Izzzuku replied emerging from Deku's head, a frown on his translucent face as he shook his head toward the teen, "'Oh please Izzzuku, help me figuring out what's going on!' And then you just wake up and tell him I deed." He sniffed in an unconvincing way, pretending to be crying and making a handkerchief appear in his hand to remove non-existing tears, "I'm so hurt, how could you Izuku? How could you use me and toss me away, destroying the blossoming of our great friendship? Oh, how I feel…"

"We both know you find this hilarious Izzzuku." Isaac butted in, before Izuku could answer, and the ethereal being just turned right around, with a grin and a wink.

"I sure do. You shouldn't keep secrets Isaac, it's bad for your health."

"You are one to talk." Isaac replied.

"I chose to impose an exile on myself to keep the secret of the Multiverse from my world. It's not the same as not telling a teenager that he lives in a cell."

"What?!" Izuku asked, "What does that mean?"

Isaac looked up at the ethereal apparition with a hint of anger on his face, and Izzzuku in response just chuckled. "Wops, looks like the cat is out of the bag." He said, while at the same time in his hand a meowing bag appeared, before dissolving again into a substance similar to dust and disappeared when he moved again. "Nope, still in there. Well, this was a beautiful night, but I think I should go sleep."

"You don't sleep."

"This is a great incentive to start. Bye Izuku, bye Isaac." And then the figure backflipped, starting to rotate faster and faster until he disappeared.

Izuku blinked, "What…"

"He is just showing off, he actually turned invisible and phased through the floor." Isaac replied, "I don't suppose you could be convinced to just… ignore the issue, right?"

"If you don't tell me, I'll tell the others what I know." Izuku replied, "I'm sure they would like to know."

Isaac sighed, before pulling out his laptop and starting it up. An awkward silence grew more and more in the room as the PC started up. "This isn't how I planned this to go…" The man finally grumbled, before turning the object around, showing Izuku the screen and his worlds, connected by a thin line in a ring.

"This," Isaac explained tapping on the thin line, "Is a Circular Current. It's a rare shape for a Current to have, but not unique. Things rarely are out there. It's usually just a weird peculiarity, where using Teleport in a given universe will make you follow a regular path that ends where it begun." He pointed to the three worlds, "It's easy enough to enter in one, but the only ways to leave them are using Guide to go back outside of it, using Teleport as an experienced user to go to another world out of the Current, or messing up with Guide and Teleport combined."

"Which is what we did."

"Exactly. Best I can guess, you four propelled yourselves just out of it, enough to get swept away in the Great Current and then get lost in there."

Izuku stopped, both hands crossed under his jaw. "So, we could have just… gone back home in a few jumps?"

"Pretty much, yeah. It's quite funny if you think…"

Izuku slammed his fist on the armrest of the chair he was sitting on. If he was Bakugou, he would have probably created an explosion then and there. He wasn't using One for All, of course, but the wood still creaked, a testament at the strength he had built up. "It's not funny."

Isaac's smile dropped completely, "Right. Sorry. I'm… I guess I am a bit too used at things going wrong with Teleport or Guide. I've lost count of how many times I lost consciousness in my journeys. But that was disrespectful of me. I apologize."

"I see. But why keep it a secret? If it's just an accident, why not just let us go back home to trap us?"

"Because of him." He replied, pointing to the other Izuku on the screen. "Izuku Midoriya from J-083, also known as All for Deku. Criminal mastermind that inherited All for One and stole a One for All. One that includes Teleport."

Izuku stared at him, "I mean, we know. But what's the issue with that? All for Deku never went in the Multiverse, did he?"

"No, he never did. However he was always capable to, if only he tried. It seems that his One for All was never stressed enough, so Teleport never did its thing. In turn, that meant All for Deku never found out about the real power he had. But in the case he did, we had a countermeasure. Or well, the Multiverse itself had."

"The Circular Current?"

"That's right." Isaac leaned back on his chair, with a serious expression, "Even if All for Deku uses Teleport, where is he going? Two more universes and then back home. Not a threat to the Multiverse, so long as he doesn't have Guide and is ignorant of other locations."

"So that's why no one knew of the Multiverse in my universe?"

"Right now, yes. But at first it was just because we usually only set up a Sitting Agent at the beginning and the end of a Current, or in one single place in a Circular one. The Flameverse was setup as the place you would find your answers in, until we found out All for Deku had stolen One for All. That's when we decided once and for all to put your universes under Quarantine. No more Sitting Agent, and no passing knowledge of the Multiverse to other people. Aizawa was told to take the secret to his grave…"

"But you couldn't tell Katsumi and the others without telling them why." Izuku nodded. He was seeing what was going on now, "And then we left the Current."

"It was something I had never considered, to be honest." He muttered, "The idea that Itsumi and you would happen to work together to leave her Universe – no, not even that, you were just tossed away accidentally – never crossed my mind. To be fair, I think I can be forgiven since I thought the Quirks inside All Might's One for All had not appeared yet. Still, this puts me in a bad spot."

"Why? Just help us take down All for Deku."

"No." He moved his hand up, stopping him, "I can't do that."

"Why?! He is a danger for you too! He is dangerous for any universe!"

"Hardly so. What is he going to do? He is trapped right now, and that will hardly change, so long as you and Itsumi stay away from him."

"But the Flameverse is the first Universe he will run into!"

"He did." Isaac said, and Izuku's eyes went wide as he took in the answer.

"He…"

"I decided to check personally once we confirmed who you are. He went to the Flameverse, and left behind a trail of destruction. I will need to speak to Itsumi, it's not safe for her back there."

"Why? What is happening?"

Isaac took a deep breath, "Katsumi Bakugou is in the hospital, in critical condition after a fight with Alien King and All for Deku, and it's currently unknown if she will make it. Hakyu Togata is dead, the line of One for All she was carrying gone. Red Jewel, the only One for All user still able to fight, is searching for the All for One users that did this. But she won't find them."

'She won't- No. No. Nononononono…' Izuku didn't want to ask. He didn't want to, but he needed to. He had to. "Why?"

"Because they moved on." He replied, and Izuku's breath caught in his throat. "Izuku, I don't think it's safe for you to go home. And I mean this in the most honest way possible. You could die if you fight All for Deku and Alien King. Not to mention your own All for One might be involved to."

Izuku gasped for air. The picture Izzzuku had shown him, his friends happy together. All Might. The teachers. Mom…

"Where is he?" He asked, hoping he was wrong. "Where is All for Deku?"

"He is in UA." The man's expression was contrite.

Izuku felt like someone had hit him in the chest with a sledgehammer. His friends, his teachers, his mother… They were all there, or close to there. And if All for Deku was there, he must have been pretending to be him. "W-Why…"

"I don't know. I really don't, I swear, there wouldn't be a point in keeping the information." He reinforced the answer when Izuku tried to argue, "Izuku. I'm sorry. I can't let you go home. I want Itsumi and the others to stay here too. It's to save your lives."

Izuku didn't even listen, instead thinking about everyone he knew. All the people dangerously in the line of fire of All for Deku. All the friends he might be losing. 'Why is he doing this?'

"I need to go back home." Deku finally said, once he calmed down.

"That is the opposite of what you should do." Isaac looked calm, but Izuku did notice he moved slightly back, "You need to come with me, train yourself using Teleport to not get yourself lost, maybe learn to use the other Quirks too, and then you will go home."

"I can't wait that long!"

"You can't wait until you actually have a fighting chance? Izuku, I told you, if you go now you will die. Alien King, All for Deku, All for One, maybe Shigaraki Tomura too… That's potentially four people that have All for One against a single One for All user. Even if you brought with you Red Jewel and Itsumi from the Flameverse, how likely are you to win? Keep in mind, two of them killed a One for All user and put another in a hospital on life support, and they were fighting three of them at once."

Izuku gritted his teeth. "But you won't help."

"I won't fight. There is a difference. I gave my reasons to Todoroki, they don't change for you. However, I'm not the only member of the League." He paused, and the words seemed to come out of him like they were being forced out. "And not all of them agree with me."

Izuku's head shot up as he stared in Isaac's eyes. "Are you saying…"

"That you could find volunteers that would join you in your fight, yes." Isaac sighed, "I told Todoroki the same thing, remember? It's not something I appreciate. We aren't a police force. We aren't built to go around stop every crime. If we tried, there would be consequences. However, I can't stop people that want to do good. If members of the League offer to help you, you can take them. Does that sound better now?"

"Will I find some? Or will it turn out that everyone thinks this isn't a problem worth solving?"

"Izuku, I'm not about to lie to you. It will be hard. Most of them have their own life, their own worlds, and won't happily jump to another random world to risk their life. Moreover, you can't just find a person or two. Against three or four All for One users and their followers, you will need many different fighters. It will take time."

"And you won't help, will you?"

"I won't hinder your search. I won't help either."

"That's…"

"Fair. I have too much authority. They will do what I say, if I do that, but I won't tell people to fight and die for a danger that isn't even extending beyond your three worlds until you go back. Something that, I remind you, you can only do by chance or by training." Isaac's eyes met Izuku, and the teenager could see how serious the man was. He wasn't doing it for cruelty or because he didn't care for his suffering. He was sorry, yet determined to maintain the course he had decided on.

Izuku couldn't help but scowl, however. Still, there was nothing he could do. Isaac was right. He could only go home by chance or by training. "Please. At least let me start the training then. The sooner I'm done…"

"The sooner you can go back. Very well." Isaac nodded. "Let's go call your friends. I will explain them everything and we can leave to the Allforverse."

-x-

Izuku leaned back on his chair, smiling widely while he internally cursed. Not that he couldn't appreciate a nice welcome back party, but the company was far from ideal.

Especially the sixteen years old Katsuki Bakugo glaring at him with a fierce scowl. That one was making it a lot harder to control himself. The future Hero had kept his eyes on him the whole time. "Is something wrong?" He finally asked.

It was the wrong question.

"Something wrong?! Something wrong?!" The teen promptly shouted, "Where have you been, you shitty nerd?! You come back after being gone for two week, and you don't even tell us where you have been, but you clearly did something stupid since you fucked up your leg!"

All for Deku bit back the irritation, noticing everyone turning to look at them. Of course he would ask that. 'So, what would the other Izuku do?' He wondered. He had been keeping One for All secret, even if at this point Katsuki knew. Did the other knew about Teleport? If he spouted it out and people had no idea about the Multiple Quirks, it would add more questions. He opted for a mid-point. He had already told All Might and a few other people, including Aizawa, who only thought his Quirk was acting weirdly, but that had been a different situation. "I can't tell you now." He said, glancing at Bakugo.

"What does that mean?!" Bakugo shouted.

'Dammit Kacch- Katsuki, I thought you were supposed to be smart.'

"Yeah that's not really manly man." Kirishima interjected, "We are all friends worried for you."

'I can't decide if that's annoying or hilarious.' Izuku thought, but managed to look down and act guilty. "I'm sorry guys, you know I would tell you if I could."

"Deku is right." Uraraka moved forward, closer to him, "He would tell us what happened if he could, you all know that."

'Man, they would be really surprised if you told them about One for All, Izuku.' He thought, before nodding. "I-I'm really sorry guys, I really can't tell you now." He replied, glancing again at Bakugo. The explosive teen still looked angry, but perhaps he would understand his words this time.

Looking at the others, he met Todoroki's eyes. The fire and ice user kept eye contact, and Izuku looked away, knowing the other him would not keep it up too long. It made him angry, but luckily having to hold back the Vestiges of One for All meant he couldn't focus on it enough. 'It's starting to become harder. I really need to accelerate my plans.' He sighed and stood up, attracting everyone's attention. "D-don't worry guys, I just want to take a breath of fresh air. I'll be back soon."

He walked out, ignoring a few of them asking if they should come with him, and made a run for it around the building, breathing hard as he moved to the back of the house. Then, after double-checking to make sure no one was following him, he released slightly his hold on One for All. The fingers in his hand cracked immediately as a shockwave hit the ground, before quickly recovering thanks to his Super-Regeneration.

"There, happy now?" He asked sarcastically, feeling the throbbing of One for All in the back of his head. They weren't of course, they never were.

He leaned against the wall. 'Harder than I thought, master. I think I'm a bit too used to things being easy.' He thought, sitting on the ground. He had never been the best at infiltration, since that was always Toga's forte, and he had gotten used at sending her in his place. Yet, he needed to infiltrate UA for a number of reasons, the most important being the other Izuku. He needed to figure out what Quirks were inside his One for All besides Teleport and those shadow tentacles to make good counterplans. That was how he had beaten Mirio, even with One for All working against him to support the Hero's embers. And if he had done it sooner, he might have saved his Master and all the people the Heroes had taken from him.

'I won't let them get in our way, master.' He thought with a sad expression, looking up at the sky, 'I know what I have to do.'

That was when he heard the steps rushing toward him and sighed. Turning around, he found Bakugo glaring at him. "Speak." The explosions-user grunted, "You said you couldn't back there, so I take it's One for All. Spill it, now, or I will drag you to the gym and explode your face until you talk."

Rage boiled inside Izuku. He was many things, patient among them, but in his own universe someone that dared to talk to him like this for half as long would have died instantly. He could do it too. Stab Bakugo in the head with a quick shot and see if he can still talk with the brain split in half. But no, he had more things to figure out. If there was a way to access Tartarus, if Mirio Togata needed to be dealt with or if he was truly Quirkless forever, if Endeavor posed a threat worth considering for his possible allies here.

If the other Izuku could come back any time soon.

That question, however, sparked an idea. A dangerous one, but one that had the potential of paying off well.

"You are right Kacchan." He said, turning around, "I need to tell you something important. And I promise you it's all real."

-x-

Itsumi paled as she heard Isaac's story, before she finally stumbled on a chair, sitting down. For a long minute, no one said anything, until she broke the silence. "I need to go home…"

"No you don't." Isaac replied, as the young woman looked weekly at him, "Listen Itsumi, you are a target. Don't you understand? You were almost killed by the High End Noumu and the few minor ones they sent after you, right?"

"I… Y-Yes, but…"

"And here you and Red Jewel alone will find yourself facing at least ten times that many. And even if you two alone manage to win, what will you do when All for Deku and…"

"I know! Don't go on that tirade, you did already! I know, but my mother is in a hospital bed! My father is…"

"Wounded, but safe."

"And meanwhile where am I?! Stuck here, with someone that could take me home but refuses to and a Vestige that couldn't even tell me if my mother was safe."

'That's not fair Itsumi, I…'

"Shut up! Shut up, old man!" She shouted, and the Vestige seemed to recoil, before she turned to Todoroki and Ojiro. "What are All for Deku's weaknesses? Can you help me?"

Todoroki and Ojiro looked at each other, before slowly returning their attention back to her. "We… Itsumi, we don't know." Ojiro finally said, breaking the silence. "I'm sorry. We have tried for years to beat All for Deku, but we think only One for All can beat him."

Itsumi nodded and immediately turned to Izuku and Isaac, "W-well, you are One for All users. You two will help, right?"

Izuku nodded, but before he could speak Isaac answered first, "I told you Izuku won't be enough."

"And you?"

"I can't."

"You are the reason we are here!" She shouted, "If it wasn't for you…"

"If it wasn't for me, you would have been lost in the Multiverse right now. Where would you have gone from Izo's universe, if I never bothered to come up with plans for the League? You would still be stuck jumping randomly. And that would not help either. Itsumi, I'm on your side."

"But you won't fight with us?" She asked, "That's an interesting concept of being on our side, you… You coward!"

"Itsumi!" Todoroki shouted before Isaac could rebuke her. The girl turned to him, like everyone else in the room. The ice-and-fire user seemed to be the only one that was calm. Cold, maybe, but calm. She couldn't help but feel intimidated. "If he won't help, the plan remains the same, doesn't it? We try to look for help elsewhere."

"How do we know his League will help?" She asked, staring at Todoroki, as her mind filled with the images of her friends and family being defeated. Her mom in a hospital, her dad wounded. How were Shiro and auntie Shoko doing? What about her classmates? "How do we know he isn't just dragging us in a wild goose chase just to keep my stupid Quirk from All for Deku?"

"If I wanted to do that, I wouldn't offer you training, I wouldn't take you to the Allforverse, I wouldn't have explained you so much since we first met. This room has anti-Quirk measures. If I really wanted to keep you away from your home forever, I would just have to turn those on and lock you four in here." Isaac's answer was calm but it had a clear undertone Itsumi did not miss. He could still do it if he wanted. Zuzu-9 was everywhere, after all. That felt ominous, now. Judging by the others' expressions, they agreed too.

"Itsumi…" The voice of the old man, her only Vestige, the previous user of Guide, spoke in her head.

"Shut up. You said everything would be fine. You said mom, dad and the others would make it, but it was all a lie!"

"I didn't lie, Itsumi."

The voice was gentle but firm, a tone she had only heard him use a few times in the past. Usually when she was acting like an idiot. "Your mother is strong. She will pull through. She always has."

"And what if she doesn't?! What if I'm stuck here, while she… she…"

She sobbed, ignoring the concerned expression from everyone else in the room. "What if she dies while I'm here. What if I never tell her I am sorry for what I said?"

"She knows Itsumi. I have been a part of Katsumi for a long time. She already knows you love your parents. And you know they would want you safe."

Itsumi just stood still for a long moment. She didn't know what to say. She wanted to hunt down All for Deku and Alien King. She wanted to go to her mother's bedside, to sit there and hold her hand once more. She wanted to tell her parents she was sorry for all the things she had said that last day. She wanted to hug them both again. "I'm sorry…'

"I know Itsumi. But Isaac is right. If you go home now, you won't help anyone. Your father was the one that asked you to leave in the first place, because he feared Alien King would come for you. You think he would be happy if you went back now that there are two?"

"They aren't in my universe."

"But they will come back. You heard Isaac, they are stuck there."

Itsumi gritted her teeth. "What if I fight them?"

"You tell me."

The old man replied, still with the same firm tone.

She knew. She knew that, if she had lost just a week before against a far less impressive opponent, she had no way to deafeat All for Deku and Alien King. "I'll die. I need help."

"You do."

The man admitted, "You are in luck then. You know what to do."

Itsumi nodded, and turned at the others. He looked at Izuku, her new friend. And then she looked at Isaac. "I will come with you."

Isaac nodded. Itsumi hoped she was making the right choice. 'Mom, dad, hold on. I'm coming to save you.'

-x-

The Teleport had been quick. As promised, Isaac hadn't lost a minute after Itsumi had agreed to come. They had just gathered their things and immediately jumped from his universe. As they landed, Izuku looked around. They were on the sidewalk of a large road.

He looked at the river on the opposite sides, in the middle of what seemed to be a large, bustling city. Looking ahead, on the other side of a river crossed by a large bridge, he saw a large clocktower.

"Is that…" Itsumi asked when she saw it as well.

Isaac nodded. "Indeed. Welcome to JUK-016. The base of the League for All, and where you will find help." He pointed at the clocktower, one of the most famous landmarks in the world. The Big Ben stood there, and Izuku couldn't help but be amazed. "Welcome to the city of London."

(xx)

A/N: From San Francisco to London, and some more All for Deku. This is probably the last All for Deku section for a while, I think. So, we move from one universe to another once more, now with a new goal. I'm pretty excited about this.

On this chapter, I have to say, I'm happy I brought back the focus on Itsumi. She was a bit sidelined after the Fantasyverse adventure, but now she is back with her own POV and her own issues with the situation.