AN: 200 FAVORITES! Many thanks to all of you. I never thought this story would be so popular. Thank you, thank you, thank you. You make me proud of my work and hobby. Well, I won't let you waste any more time, not when the big battle is coming.
After returning to their world, the students immediately met their teacher, Shouta Aizawa. They gave him a brief explanation of their disappearance, telling him that they had been to another world and that the people with them were heroes of that world.
The U.A. teacher found it all strange, so much so that he considered it a crazy story but decided that they would discuss that with the principal.
So they split into two groups, the adult heroes would go with Shouta to explain everything about the students and tell them about the Hydra invasion, while the students would take the young heroes to their dorm, as they wanted them to get to know each other. Although Mei decided to drag Shuri towards her lab so she could see the babies she was making.
In said dorm, where the Class 1-A students were staying, were the rest of the class members in the main room. They were all still worried about their missing classmates as they wondered what had become of them.
"First Izuku and the others, and now Denki, Mina and that girl Mei. What the hell is going on?" asked Hanta.
"Do you think it's the villains' doing? After what happened at the camp, it would make sense." said Mashirao.
"What if we're next? What if they take us to a place we'll never come out of or see the light of day again?" asked Minoru panicking.
"Calm down. If we were next, they would have already acted recently." said Mezo.
"Besides, if their target was our class, it wouldn't make sense for them to take Mei Hatsume, from the support course." said Fumikage.
"That's true." said Toru.
"Still. That doesn't stop us from not knowing where they are or what has become of them." said Rikido.
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Suddenly, someone knocked on the door, drawing the attention of the students present in the room.
"I wonder who it is at this hour?" said Mashirao getting up to open the door.
"Wait, what if it's the villain who kidnapped our friends?" asked Toru in a nervous voice.
"Since when do villains knock on the door before attacking?" asked Fumikage.
"Just in case, let's all go check it out." said Mezo.
"I-I'd almost rather stay here, guarding the fort." said Minoru backing away a little in fear.
"You're coming with us too." said Hanta grabbing Minoru with his ribbon and dragging him towards the entrance.
"No, wait!" shouted Minoru trying to free himself from his bonds and pleading, but it fell on deaf ears.
A little cautiously, the student with a tail opened the door. They expected it to be some professor or another U.A. student, but they were all in shock at whoever or whoever was in front of them.
In front of them stood the missing students from their class.
"Hey, guys." said Izuku.
The other students jumped for joy at seeing their classmates back safe and sound.
"I can't believe it, you are back!" exclaimed Toru hugging Ochaco, Mina and Tsuyu with all her might.
"We're glad to see you again too!" said Ochaco.
"We are so sorry for worrying you." said Eijiro.
"You have no idea. We thought you were captured by villains." said Hanta.
"Tsk. I'm not like I used to be, I wouldn't let a bunch of wimps get me again!" said Katsuki in anger at the helplessness he had that time.
"Where have you been all this time? If you were fine, why didn't you come back sooner?" asked Fumikage.
"It's a long story." said Denki.
"By the way, who are all those people?" asked Mashirao pointing to the young heroes standing nearby watching the reunion between students.
"We'd better go inside, there's a lot to tell." said Izuku.
For the next few minutes, the 11 students explained to the others everything that had happened, from the trip to another world to their rules. There was even a moment when the young heroes introduced themselves and explained their powers.
There was also a moment when Minoru tried to woo the otherworldly girls, but a glimpse of Laura's claws quickly made him back away.
"I can't believe it, all this time you were in another world, a world full of heroes and villains?" asked Hanta.
"Yeah, dude. I was shocked too when I heard about it." said Eijiro.
"And you seriously don't go to hero academies or get licensed to be heroes?" asked Fumikage.
"Yes, things are different in that world." said Tsuyu.
"Which is better, no doubt." said Katsuki.
"We may go to a school that helps us become better heroes, but as far as our world is concerned, being a hero isn't an occupation. You don't get paid for it." said Laura.
"That's right, if you want to be a hero, just be one." said Spider-Gwen.
"We don't fight evil for money or fame, we do it because it's the right thing to do." said Kitty.
"Although most heroes, including some of us, when they're not saving the world, live like normal people with normal jobs to earn a paycheck or even go to school." said Kurt.
"It sounds complicated." said Koji.
"Wouldn't it be all messed up with so many people with powers running around and using their powers when they want to?" asked Rikido.
"It's up to the person on how they want to use their powers. There may be people who don't like you bending the laws to help, but they'll eventually grow fond of you. In fact, it's been years since I got my powers and I've been a hero ever since." said Spider-Man.
"Really? But you're our age." said Toru surprised by that.
"Like my friend said, if you want to be a hero, it doesn't matter how old you are or who you are, just be one." said Kamala.
"Besides, there aren't many heroes in our world compared to yours. While some like us are born with powers, others get them due to accidents." said Wanda.
"Or they can just be one even if they don't have powers." said Daisy.
"Can you really be a hero without having powers?" asked Mashirao.
"Yes! Isn't it amazing? In that world there are heroes who use their technology and fighting skills to fight villains! Most of the Avengers are heroes without powers!" said Izuku very excited.
"The Avengers?" asked Mezo.
"They are a group of heroes considered the mightiest of the Earth." said Shoto.
"Really? Are they that powerful?" asked Yuga.
"They are, since one of their members, who has no powers, defeated Katsuki in a fight." said Tenya.
"What?! Someone without powers defeated Katsuki?!" asked Minoru in shock.
"Just because he got lucky and caught me off guard! Next time I'll kick his ass!" exclaimed Katsuki angrily.
"Not only that, but I'm also a member of the second squad of the Avengers!" said Kamala.
"You're an Avenger?" asked Fumikage.
"Despite being our age, you are what in our world would be considered a professional heroine. How envious I am of you." asked Rikido.
"Anyone can be an Avenger, you just have to prove yourself." said Kamala.
"Are there more pretty and sexy heroines?" asked Minoru.
"So, if there were no hero licenses or anything like that in that world, does that mean you could go around defeating villains?" asked Hanta ignoring his partner's question.
"That's right. There's no problem because you show your powers in public or use them in your own way." said Doreen.
"I told you that world was better." said Katsuki.
"You bet! Since we came to that world we have faced many villains. Gods, a terrorist organization, evil mutants, killer robots, inhumans..." said Eijiro remembering the battles they had in the other world.
"Wait, gods? What do you mean?" asked Mezo.
"Oh, right. We didn't tell you, but one of the Avengers is the real god of thunder, Thor." said Ochaco.
"WHAT?!" asked the other students in complete shock at that revelation.
"T-The gods are real?" asked Rikido.
"And he's also a hero?" asked Mashirao.
"Yes. I was like that too, but it's true! I saw it with my own eyes! Thor is real!" said Mina.
"In fact, the god we faced was Loki, his brother." said Tenya.
"Y-You fought a god? Sounds very dangerous." said Minoru shuddering at the thought of facing an all-powerful being.
"So what's this about mutants?" asked Toru.
"Mutants are their world's equivalent of people born with Quirks." said Momo.
"But not all of them are good, there are some who want to harm humans because of their cruel treatment of mutants." said Kyoka.
The other students felt a little sorry for the young mutants.
"I'm sorry for what is happening to you in your world." said Koji.
"Don't worry, we're kind of used to it." said Pietro.
"But why would they treat you badly? If you are born with powers, then you can be heroes, right?" asked Rikido.
"Some mutants simply didn't want to receive those powers, all they wanted was to live a normal life." said Rogue.
"Besides, as it has already been explained to you, not many people are born with powers in that world and people usually fear or attack that which they don't understand or is different from them." said Shoto before turning his gaze to the inhuman princess. "It happens the same even with inhumans."
"Inhumans?" asked Fumikage.
"They are like mutants, but they got their powers due to an alien race experimenting on humans many centuries ago." explained Momo.
"Are there aliens in that world too?" asked Mashirao.
"Did you really get your powers from them?" asked Rikido.
"Yes. We aren't so different from mutants. Because of the hatred and fear the humans had for us, we built a citadel where we could live in peace." said Crystal.
"That's terrible." said Yuga.
"Yes. I thought your world was mind-blowing, but I see that it can also have its bad side." said Mezo.
"It's possible, but despite that, we keep going forward to protect people and convince them that mutants, inhumans and humans can live together in peace." said Kamala.
"That's a good goal. I support you!" said Toru.
"Dude, your world has it all! Gods, aliens, people born with powers, heroes without powers..." said Hanta.
"I know. I still find it hard to believe I've experienced it in person." said Denki.
After settling the whole matter of introductions and explanations. The 11 students decided to move on to a more important topic.
"Guys, there's something we need to tell you." said Izuku with a serious face, which worried the other students.
"What is it?" asked Mashirao.
"It turns out that we found out who was behind the vortexes that took us to the other world." said Momo.
"Really? Who?" asked Fumikage.
"Hydra." replied Shoto.
"Hydra?" asked Yuga.
"An evil organization that plans to conquer our world, but now it seems they have yours in their sights." said Kamala.
"In fact, we've heard that they've gathered an army of villains and plan to attack the city at any moment." said Tenya.
"What? Tell me that's a lie!" demanded Minoru trembling at the thought of a villain invasion.
"Unfortunately no. That's why most of the heroes of our world have come here, to help your heroes stop Hydra's plans." said Wanda.
"Well, then we can rest easy. We have Endeavour, the world's number one hero, plus other powerful heroes. And if what you said is true, then we also have the most powerful heroes in your world on our side." said Fumikage.
"Not to mention that there is a god among them." said Rikido.
"That's possible, but we're talking about Hydra. Even if you had gathered all the heroes of the world, they would surely have been prepared to face them, so it would be best not to underestimate them or let your guard down." said Daisy.
"It's possible, but you have to keep in mind that they didn't count on the heroes of your world being here and knowing about their plan. So there is a chance of victory." said Momo bringing optimism to the others.
Everyone spent the next few minutes chatting with each other about things related to both worlds. Despite knowing that there would be an invasion of villains from another world, they were at ease knowing that the mightiest heroes of both worlds would fight together to defeat them.
In the U.A. meeting room were Nezu, All Might, Endeavour, Present Mic, Cementoss, Midnight, Snipe, Ectoplasm and Power Loader. The moment Shouta informed them of the students' return along with some surprising guests, they all went to gather in the room so they could discuss the matter.
Once they arrived, Shouta told them what the students told them about how they had been in another world with their own set of heroes and villains.
"I have to admit, it's a very interesting story." said Principal Nezu.
"I'm sorry if you don't believe in it." said Captain America.
"On the contrary, after the appearance of the Quirk, I believe anything is possible and travel between worlds isn't excluded from that list." said Nezu.
All Might rose from his seat. "If what you have said is true, then I am very grateful to you for taking care of our students during their stay on your world and bringing them back." said All Might bowing in thanks.
"We were beginning to despair of ever finding them. How can we thank you?" asked Midnight.
"A simple thank you is more than enough." said Captain Marvel.
"After all, it is a hero's duty to help people in need." said Cyclops.
"I'm sure you would have done the same." said Beast.
"I wouldn't doubt it for a moment." said Nezu.
"Intriguing. I know scientists and conspiracy paranoids have been talking or theorizing about the multiverse, but now I see it's actually true." said Ectoplasm.
"Whatever the case, I thank you for keeping my son safe during his presence on your world." said Endeavour.
"Your son is Shoto Todoroki, is he not?" asked Karnak.
"Yes. What of it?" asked Endeavour.
"Your son saved our king's life." said Medusa pointing to her husband.
"Wait, he's a king?" asked Cementoss.
"Yes, Black Bolt is the king of the city of Attilan, the city of the inhumans. And he isn't the only one, as I am the king of Wakanda." said Black Panther.
"You're a hero and also a king? That must be very complicated." said All Might said impressed.
"It is, but I must do my best, not only to protect my people, but also my world." said Black Panther.
"A world where a king can also be a hero must be awesome." commented Present Mic.
"Well, it's not over yet. This guy here is the real god of thunder, Thor." said Hawkeye pointing to his companion.
Needless to say, the heroes were somewhat confused by that information.
"I must have something in my ears, because I thought I heard that he is a god." said Shouta not quite believing what they were saying.
"I'm afraid he's not lying, I am Thor, son of Odin, prince of Asgard and god of thunder." said Thor raising his hammer, suddenly causing thunder and lightning to appear outside the building.
That was enough to convince the heroes, who were in shock at that revelation.
"I-I can't believe it! A real god in our midst!" said Midnight.
"Now it turns out that gods are real and that they are heroes in that world?!" asked Present Mic in shock.
"How do we know it's not a story? That that wasn't the work of some kind of power?" asked Endeavour being cautious and not quite believing what they were saying.
"I have no reason to lie to you, my friends. It is up to you whether you believe me or not." said Thor.
"Out of curiosity, are you from the same hero agency or from different companies?" asked Snipe.
"The laws of our world are very different from yours." said Captain America.
"That's right. In our world there are no such things as hero academies or licenses to be heroes." said Ant-Man.
"Aren't there? Then how can one become a hero?" asked Nezu curiously.
"As long as you have the right dedication and the necessary skills, anyone can be a hero. Even those without powers." said Captain America.
"How can one become a hero if they have no powers?" asked Snipe.
"As my friend said, if you have the necessary skills, one can be a hero. In fact, some of us don't have powers." said Iron Man.
"And what kind of skills do you have to be a hero?" asked Endeavour.
"I'm very smart. I designed this armor that helps me fight crime." said Iron Man.
"It's certainly the most advanced armor I've ever seen." said Power Loader.
"In our case, we use special particles that allow us to alter our size." said Wasp.
"And in ours, we've been trained in many styles of combat, and we make use of that training to fight the bad guys." said Black Widow.
"Hmm. That may be enough on your world, but here you will have to prove it with actions and not words." said Endeavour.
"We'll gladly show you." said Falcon.
"So, if there are no rules regarding powers? What have the students been doing in the meantime?" asked All Might.
"Well, let's just say they've been pretty busy with some of our villains." said Vision.
"You let some inexperienced kids fight real villains by themselves?" asked Midnight.
"They weren't going alone at any time. In fact, there's no rule that says they can't. Hell, there's a kid their age in our town who's faced threats as serious as ours." said Hawkeye.
"Not to mention that a member of our group is also their age." said Captain Marvel.
"I guess that's just the way things are in your world." said Shouta who, although he was worried about the fact that they were fighting real villains, had to be calmed by the fact that a little experience wouldn't hurt.
"Your world is certainly amazing in its own way. I look forward to learning more about it." said Nezu.
"Ladies, gentlemen." began Professor Xavier commanding the attention of those present. "As much as I would like to discuss certain topics with those present, we have more important matters to discuss."
"The professor is right. We haven't come merely to accompany your children." said Wolverine.
The professional heroes in the room began to feel a little nervous at the seriousness of the otherworldly heroes.
"So what did you come here for?" asked Snipe.
"We found out who caused your students to end up on our world." said Iron Man.
"Who?" asked Endeavour wanting to punch the guy who took his son.
"Hydra." said Black Widow.
"Hydra? You mean the mythological creature with many heads?" asked Cementoss.
"No. Hydra is an organization that plans to take over our world, but now it has this world as its target." said Captain America.
"It has gathered many soldiers and villains from our world to attack yours and conquer it." said Thor.
The faces of the professional heroes were filled with concern and seriousness.
"How much time do we have until that attack happens?" asked Nezu.
"A couple of hours at most." said Hawkeye.
"Do you really believe that about the invasion?" asked Ectoplasm.
"There is no reason for them to lie. After all, they were the ones who brought the students back." said Nezu.
"Is that Hydra that bad?" asked Present Mic.
"We had a few encounters with them, and we can tell they aren't an enemy to underestimate." said Captain America.
"Then let them come. We'll show them we're not easy to take down." said Endeavour increasing the power of his flames a bit to emphasize his point.
"Mmm. I like the way fire man thinks." commented Hulk with a grin.
"As my friend said, you can't underestimate them, not only do they have several soldiers and villains, but also a large arsenal of high technology." said Falcon.
"That's why we came here to help you fight against them." said Mr. Fantastic.
"We appreciate you helping us fight this threat." said Nezu.
"No problem. After all, they are our villains." said the Human Torch.
"What can you tell us about them? We need to be well informed if we are going to face them." said Power Loader.
Iron Man pulled out a metal plate and placed it in the center of the table. Shortly thereafter the plate began to display a holographic image of the Hydra symbol, to the amazement of the professional heroes.
The image was changed to show a 3D image of Red Skull.
"This is their leader, Red Skull. A while back, he tested a serum that gave him powers similar to mine, plus he possesses one of Tony's armors." said Captain America.
"If that guy is the leader of the organization that intends to attack us, then this will be easily resolved." said Endeavour.
"I wouldn't underestimate him if I were you. Skull has proven to be smarter than us, not to mention an expert strategist. Surely he must have organized attack formations and such." said Captain America.
"What about the villains he has recruited to his cause?" asked All Might.
Iron Man had the image of the Red Skull changed to one of Dr. Doom.
"Victor Von Doom, aka Dr. Doom. He is one of our most dangerous villains. He has high knowledge of not only technology, but also magic. There have been times when he used Asgardian magic against us." said Thor recalling how that villain used the Destroyer and other things of Asgardian origin.
Then, Dr. Doom's image was changed to that of Arnim Zola.
"This is Arnim Zola, one of Hydra's top scientists during its early days. In order to stay alive and continue his research, he transferred his mind to that of a machine." said Iron Man.
"Unbelievable. Such a thing should be impossible even for our technology." said Power Loader amazed at what that villain did.
"His robotic body isn't the only dangerous thing about him." began Iron Man continuing his explanation. "Every time his body is destroyed, he transports his mind to any technological device he can find."
Iron Man then changed the image to that of Hyperion.
"Who's that? He looks more like a hero than a villain." said Snipe.
"That's because he was. Hyperion was once the hero of an alien world, but his methods were questionable. He threatened people with harm if they didn't obey the laws. The people of his planet turned against him and that caused him to destroy it himself." said Captain America.
The professional heroes gasped in horror when they heard that. A hero who destroyed his own world. It had to be the most horrible thing they had ever heard.
All Might clenched his fists in anger. "Such an act is unforgivable. If it weren't for my state, I'd teach that bastard how a true hero acts." said All Might.
"I hear you." said Endeavour understanding how the former number one hero feels.
For the next few minutes, the otherworldly heroes were showing and explaining the abilities of the villains that would be acting in the Hydra assault. All to gather the necessary information so they could be prepared for when they appeared.
"Thank you very much for the information. I will alert the other professional heroes and ask the mayor to evacuate the city. The most important thing is to get the civilians away." said Nezu.
"You must do it as soon as possible. Who knows when they will show up." said Captain America looking out the window to see the city that would later become a battlefield.
AN: Hello everyone It's not long now! The war between two worlds is about to begin. Who will win? Which hero will fight which villain? What will happen to the students during the battle? Wait until the next chapter to find out.