The next day, Eris, Nami, Catilia, and Aqua, accompanying Cath, Mel, Alice, and Tya left Ectoville, eventually arriving at a huge location called 'The Temple of the Cats' where people just like Cath seemed to live. But the most surprising thing was that when entering through the entrance of one of the temples of the place, the group appeared in another place, outside of Ectopia in the outside world. From there they went to the city where they got a plane with which to travel to the region of Japan, from where they continued on their way employing a rented vehicle, with Nami and Catilia being constantly surprised by the technology of that world, although Eris seemed not to be interested in it all.

What's more, Eris was thinking throughout the long journey until they reached her destination about everything that had happened recently, and about the message they sent her asking her to come in search of answers.

But now she was willing to know everything, while she observed the entrance to the compound where she had been invited to come: the UA Academy.

"This is the UA Academy?" Nami asked, looking at the entrance to the compound.

"Yes it is," Cath said. "Impressive, right?"

Catilia approached the arch of the entrance, but Mel caught her to stop her from advancing.

"Where are you going?" Mel asked. "If you are not registered on the visiting list, you will not be able to enter."

"Really?" Catilia asked. "So what do we do?"

They were all silent, until they heard a laugh near them, causing them to turn around.

"Hahahaha! I am here!" She suddenly yelled at a huge figure walking towards them, when it suddenly transformed into a decrepit form, identical to the man in the video they received. His transformation simply left Eris, Nami, and Catilia confused by what happened.

"Toshinori!" Mel exclaimed running towards him, hugging him.

"What a surprise, Mel! I didn't expect you to come!" Toshinori exclaimed as he returned the hug.

"It's been a long time, and it looks like you're still going on," Cath said as she walked up next to Alice and Tya.

"Cath, Alice, Tya! Nice to see you too!" The man said to them, stopping to hug Mel. "Tell me, are you still fighting for justice?"

"What do you think?" Alice asked with a wink.

"I'm glad for it," Said Toshinori with a smile from him, quickly noticing Aqua. "And you are?"

"I am Master Aqua, sir," Aqua said, nodding. "I am here due to a certain incident that occurred, although I am curious about this place.

"Master, huh? Well, if it were possible, it wouldn't be bad if you gave some classes to our students," Toshinori said with a smile.

"I highly doubt that's possible," Aqua said, ignoring the topic that one needs to use a Keyblade in order to receive a class from her.

Meanwhile, Eris, Nami, and Catilia were talking among themselves.

"Hey, are you sure this weird guy is the one we should talk to?" Eris asked.

"The truth is that it looks quite similar to who we saw in the video," Nami replied.

"Yes, but have you seen how he changed from muscular to rachitic?" Eris asked.

"Yes, that's odd," Catilia answered.

The others kept talking among themselves for a while.

"Oh by the way!" Mel said, showing a small suitcase that she carried with her. "Do you remember what we talked about earlier? Well, here it is."

Toshinori raised an eyebrow and looked at its contents, revealing a couple of potions. "Have you finished it?" he asked himself in surprise.

"Yes, although I don't know if it will work as it should. After all, I haven't been able to test it on anyone, as they should only be effective on you, Toshinori. I don't know how long its effects might last," Mel replied.

"I guess you won't lose anything to try," Toshinori said when he finally noticed Eris.

Eris also noticed that he was looking at her, watching as he approached them.

"You must be Eris, right?" Toshinori asked.

"Yes, that's it," She answered.

"Awesome," Toshinori said. "A monster girl, with a quirk impossible to acquire by birth," The man muttered softly.

"And you are?" She asked, frowning at her murmur.

"Oh, that's right, where I have my mind!" He said, hitting his forehead with his hand. "My name is Toshinori Yagi, but I was previously known as All Might.

"So it's you who I have to talk to, right?" Eris asked.

"Indeed, but I prefer that we talk in a private place. There can be a lot of prying ears out here," Toshinori said.

"But Mel said we can't go through," Catilia said.

"And you are?" He asked.

"They are my sisters, Nami and Catilia!" Eris exclaimed. "So treat them with respect."

"Okay, okay, don't get angry," Yoshidori said. "The truth is that it is possible to access with special passes, which I have on hand."

"Well, what are we waiting for? I am curious to see this place," Catilia said.

Thus, everyone crossed the arch into the enclosure without many complications.

"By the way, where do the students usually train," Eris asked as she walked.

"Well, usually in the gym, why?" Toshinori asked.

"I just want to see how the students usually train, so I can get an idea if this place deserves its reputation," Eris said, walking away from the group.

"Hey, wait! I don't think it's a good idea!" Nami said following Eris.

"Besides, it's not in that direction," Toshinori said, causing Eris to stop dead, looking in another direction.

Everyone started to follow Eris to prevent her from causing trouble, while a dark figure outside the compound watched them carefully until they disappeared from its sight.

It didn't take long for Eris to find what looked like the school gym. After entering the building, she could see how the entire interior looked like a huge mountainous area made of concrete, which could make it difficult to walk around the place. There she could see how several teenagers were at various points on top of the piles of cement, training strange abilities that they possessed, among which she could distinguish: creating objects from her body, hardening his own body, making objects float by just touching them, moving like a frog, generate electricity, move at full speed running, etc.

Just as she was thinking of walking, a figure formed in front of her, blocking her way. This was a person in a trench coat, a black suit that covered her entire body.

"What are you looking for, miss?" the person asked.

Eris didn't say anything, noticing that there were dozens of people just like him with the teenagers training.

"Calm down, Ectoplasm. She's with me. "

The man looked behind Eris, finding Toshinori at the entrance who was accompanied by the rest of the group.

"All Might?" Ectoplasm asked, just as he found out that Eris had walked past him. "Hey!"

"I am sorry. Sorry for the inconvenience," Nami said, walking past her. "It's her nature."

Ectoplasm stared at her with confusion on her face.

Eris kept walking between the cement mounds, watching how the students were training.

"Okay, time to see if this technique works better now," Said a guy of average height, with a slim muscular build and light skin tone, short spiky ash blonde hair with choppy bangs that hang above his eyebrows, sharp, bright red eyes, wearing a tight black muscle t-shirt. with an orange "X" in the center, two dots along the left line of his collar, a metallic collar with rectangular ends that have three holes on each side, sleeves that extend from inside his grenade-shaped gauntlets up to his biceps, a belt that also carried grenades, baggy pants with knee pads, black knee-high combat boots with orange soles and eyelets, jagged, black mask that passes around his eyes and a large orange-rimmed flare shape protrudes from each side. The boy pointed his hands towards one of the mounds of cement. "AP Shot!"

From his hand came a kind of explosion that damaged the concrete leaving a wide hole in it.

"I still have to focus the radius of effect of the shot more, but I will soon be able to," Said the boy looking at the block.

The damage to the block caused a piece of it to break off, and it fell. Since he was in an area above, the boy looked down, spotting Eris in the path of the drop of the concrete block.

"Hey, you! Watch out!" the boy exclaimed.

Eris turned her head up, watching as the lump of cement was falling on her. Eris was ready to avoid the chunk by jumping away, but…

"Smash!"

Suddenly a green shadow hit on the piece of cement, and covered by a kind of green electric field, it kicked the block into pieces. And after destroying it he landed on the ground sliding on her feet.

Eris could see who it was. He was a medium-height teenager with freckles, green eyes, green tousled hair, slim but toned wearing a dark green full bodysuit with black details, a belt, black boots with iron soles, black elbow and knee pads, white gloves, a mask with holes that looked like a smile.

The hellhound was amazed at the feat that the boy had done. Although she didn't need his help.

"Hey you!" The boy on top yelled and jumped down to the ground, facing Eris. "Can I know what you're doing here?! You should be careful if you don't want to end up dead!"

"Katsuki, calm down. Nothing has happened," The green-haired boy said, approaching him.

"You stay out of this, Deku!" Katsuki exclaimed in a threatening manner.

'This boy has a serious attitude problem.' Eris thought as she saw Katsuki's behavior while arguing with the guy named Deku.

"In case you don't remember, we are training to improve our special techniques for when we begin working with the professionals!" Katsuki exclaimed. "And we can't afford to be bothered by…by…"

Then they both looked at Eris. "What are you?"

"Like you care about that to begin with!" Eris exclaimed. "You usually ask for the 'who', not the 'what'!"

"Doesn't matter! It's no place for people like you! We're training to be heroes, in case you haven't noticed!" Katsuki exclaimed. "And now we are training with techniques that can leave you very badly if they hit you, so get out!"

Everyone left their training to watch Katsuki's argument with Eris in confusion, wondering what was happening.

"Oh, are you saying I'm not on your level?" Eris asked with a mischievous smile, cracking her knuckles.

"Hey, Katsuki didn't mean that. It's just that…" Deku began to say to calm Eris down, but then he tensed up looking at her.

"Why don't we prove that claim here and now, kids? Let's see who would win in a fight: a couple of kids who have been training for at least a year, or a monster that has fought to survive its entire life," Eris said, as she looked at them with a sinister smile.

'This girl… She is serious! She really wants to fight us!' Deku thought as he and Katsuki prepared to fight.

Eris was ready to face both teens, but without warning two hands grabbed her ears pulling them, causing her to groan in pain and wave her arms frantically.

"May I know what you're doing, Eris?" Nami asked who was tugging on Eris's right ear.

"Attacking a couple of teenagers. Haven't we taught you manners?" Catilia asked as she tugged on Eris's left ear.

Eris kept complaining about the ear pulling with her four arms shaking frantically, while Deku and Katsuki now looked at her with confusion and a little nervous due to the surrealism of the situation.

"Young Midoriya, young Bakugo. Are you okay?" Toshinori asked as he approached.

"We are ok. I was just about to leave this girl in her place," Katuski said, crossing his arms.

"Yes, we are, All Might. Although for a moment I feared for my life, I don't know why," Said Deku, or Midoriya, with a hand on his head.

"I wonder why," Said Toshinori, glancing sideways at Eris who was yanked free from her ears, rubbing them with her upper hands with a wince.

"Only she has been lucky," Katsuki said.

At that moment, Midoriya looked behind them, his jaw dropping with surprise on his face. Coming up to them he could see Cath, Alice, Mel, and Tya, the girls being surprised at Midoriya's reaction. He apparently ignored the presence of Aqua who was with them.

"It can't be! Are they who I think you are?!" Midoriya asked as he looked at the girls like a fan. "Yes, yes they are! They're the Battlesuit Girls! Heroines from a team made up entirely of monster girls, and they're here!"

"Wow, it's an honor to have you know us, I think," Cath said when she saw the boy's reaction.

"Don't worry, he's a hero fan after all," Toshinori said with a smile looking at Cath, before turning to the boy. "Izuku."

The boy snapped back to reality, looking at Toshinori.

"Come with us. We need to talk," Toshinori asked.

"Talk about what?" Izuku asked.

Toshinori glanced at Katsuki before looking back at Izuku. "About the topic I told you about yesterday," And he pointed sideways at Eris.

Izuku looked at Eris for a moment, and at that moment he seemed to remember something, to which he nodded.

In an office at UA school, Toshinori, Izuku, Eris, Catilia, Nami, Cath, Alice, Mel, Tya, and Aqua were sitting on armchairs, looking at each other.

"I suppose you've been wondering all this time why I wanted you to come here, haven't you, Eris?" Toshinori asked.

"Yes, I've been wondering that for a while," Eris replied.

"Well, to understand it, you have to know about One for All," Toshinori said.

Eris raised an eyebrow when she heard that name as if she had heard it before.

"All Might, do you think it's safe to talk about it here?" Izuku asked.

"Don't worry. Cath and the others already know about it, and from what Aqua has told me, she can keep the secret," Said Toshinori, they were nodding. "But in any case, what I am going to reveal must not leave this room under any circumstances. Of those in the school, only the principal, the nurse, and the young Bakugo know this. Anyway, not a word of this to anyone outside this room."

They nodded their heads.

"Well Eris, you must understand that One for All isn't just a quirk, to begin with," Toshinori began to explain. "This quirk itself accumulates power over time, becoming stronger, as well as being able to be transferred to another person to carry it, just like a torch. Said quirk was transferred to other people for generations, me being one of its bearers."

"This quirk has always been used to pursue justice and protect those who cannot, increasing its power with each generation. But said quirk has an iron restriction. As I mentioned, this quirk must be passed on to another person, which means there can only be one user of One for All. Currently, the young Midoriya, my pupil, is the one who possesses that power," Toshinori explained.

"What does all this have to do with Eris?" Nami asked.

"According to research made by Mel some time ago, One for All has a very distinctive genetic makeup in anyone's DNA. I, as I have owned it, should have traces of that genetic makeup. But if her research is correct, you, Eris, are too the bearer of One for All," Toshidora replied.

"A second One for All?" Izuku asked.

"Yeah, that's what it looks like if we trust what I saw when I did the blood test," Mel said, looking at Eris.

Eris was simply idling her arms, listening to the entire conversation.

"But if it's really like that, how is it possible?" Izuku asked.

"And seeing all that you can do with One for All, why isn't Eris capable of doing that if she possesses it too?" Catilia asked.

"Well, that's a good question," Toshinori said with a hand on his chin. "Considering that she would be from the ninth generation, her power should be high, similar to the young Midoriya, but she seems to have no sign of it."

"What if there's something that seems to block it?" Izuku wondered.

At that moment they all looked at Eris, who raised an eyebrow at the sight of them.

"Okay, fine, but how do we check that? There is no way to check that!" Eris exclaimed.

Aqua thought for a moment. "I think I know how."

"Oh yeah? And how?" Mel asked.

Aqua got up and stood in front of Eris, pointing her Keyblade at her.

"Hey what are you doing?!" Eris asked, but with a flash from the tip of the Keyblade, Eris fell asleep leaning back on the couch.

"How effective is that!" They all exclaimed.

"I hope this works, but obviously you all have to go to sleep," Aqua said, using the same spell, but this time putting everyone to sleep.

At that moment, Aqua summoned a kind of circular portal in front of Eris and shot a beam of light from her Keyblade into the portal.

Izuku started to open his eyes and looked around her.

"Where are we?" Mel asked, looking around her.

They were all in the same place. A huge black space where the only thing there was a strange circular platform with the floor like a stained glass window, where there was the image of Eris with her eyes closed with various background images, with a small set of circles with the faces of Nami, Catilia, Wolfgun and another man, Eris's father. Toshinori stared at that image as if it were an old friend he hadn't seen in a long time.

"This is what we call the Dive into the Heart," Aqua answered as she walked between them. "The world within the dream, and the physical form of Eris' Heart."

"This is Eris's heart?" Izuku asked, totally confused.

"I suspect that what is meant by heart is not the same as the organ itself, right?" Toshinori asked. Aqua nodded her head.

Izuku was surprised just like the others, until suddenly something pushed him to the ground, feeling a heavy weight on his back.

"Does someone want to explain to me what's going on here?!" Eris asked, totally angry as she crushed Izuku with her foot. "If this is a part of me, at least take your shoes off!"

"Calm down, Eris, don't be like that," Catilia said.

"But has anyone seen her before she showed up?" Tya asked, looking at Eris.

"The nature of this place works differently for the person to whom it belongs," Aqua said. "Actually she's nothing more than a pseudo-physical representation of Eris interacting in this world since we are here."

"That makes some sense," Alice said, as Izuku wriggled free of Eris.

"No way I am pseudo-physical. I am me, and nothing else!" Eris exclaimed to Aqua.

"Okay, let's not forget why we're here," Cath said. "We should see if there is anything here that tells us how Eris's supposed One for All doesn't seem to be active."

"Right. Here it can be anything and look like anything," Aqua said.

"Something like that over there?" Izuku pointed out.

They all looked in that direction, finding what looked like some kind of glass crack floating in the air, with strange white particles slowly coming out of it.

"Wow, that's new," Aqua said approaching that crack, checking that it was intangible.

"What's that?" Mel asked.

"I have no idea," Aqua said, inspecting the crystal. "But it seems as if Eris possesses some kind of special power, but something seems to be blocking that power. This crack seems to be a representation of that power trying to break free. And…it seems like it's been like this for years."

"One for All," Izuku commented.

"That would explain how her abilities were improving over time," Nami said, while Catilia nodded.

"Okay, and how do we solve that? How do we break this 'wall'?" Eris asked.

"I don't think it can be broken that easily," Aqua said. "I have the feeling that it takes some kind of external stimulus that affects the interior to break this."

"Well, at least we have a clue as to what's going on with your version of One for All, Eris," Toshinori said to Eris.

"So, what do we do?" Eris asked.

Toshinori was thoughtful for a moment with a hand over his mouth.

"You could train at the academy," Toshinori proposed.

"What are you talking about?" Eris asked, making everyone look at him.

"It's simple: at UA Academy we train future heroes with their quirks. You have a special quirk, Eris. Besides possessing those eyes," Toshinori explained.

"What do my eyes have to do with everything else?" Eris asked, placing her hands on her waist.

"As you know, the eyes are a window to the soul. And your eyes shine with the same brilliance that many heroes have, seeking to impose good and justice in the world," Toshinori said before turning his head away, mentally mentioning, 'Even though in your world all the monster girls think of one thing, and not that exactly.'

Eris thoughtfully looked to the side and scratched her head thoughtfully.

"Please let us help you," Toshinori asked.

"The truth is that I think we don't lose anything by trying," Nami said.

Eris remained pensive for a moment until she felt a hand put on her shoulder, causing her to turn her head, not seeing anyone there. For some reason, that feeling of hers seemed warm to her, as if it was pushing her to move in that direction. Eris sighed and turned to Toshinori.

"Very well, you win. But don't expect me to be your typical model school student, okay?" Eris said.

"In agreement," Toshinori said. "I just hope you keep certain habits of yours in check. I have some knowledge of the nature of your kin, Eris."

"Don't worry, I've seen your students, and none of them are of interest to me," Eris said. "At most, it'll be a quick round if they're interested."

'I don't think that's what he's referring to.' Everyone present thought with some nervousness.

In the days that followed, Eris was attending the same classes as the students of 1A class, at the same time that she was staying with them in the Height Alliance dormitories. There she met the rest of the students and gave her quirks. He had already met Katsuki Bakugo before, who possessed the 'explosion' quirk, while Izuku Midoriya possessed 'One for All', although hardly people knew about this. The others were as follows: Denki Kaminari, Electrification; Eijiro Kirishima, Hardening; Fumikage Tokoyami, Dark Shadow (literally a living shadow); Hanta Sero, Tape; Koji Koda, Animal Voice; Kyoka Jiro, Headphone Jack; Mashirao Ojiro, Tail (Literal); Mezo Shoji, Duplicate Arms; Mina Ashido, Acid; Minoru Mineta, Pop Off; Momo Yaoyorozu, Creation; Ochaco Uraraka, Zero Gravity; Rikido Sato, Sugar Rush; Shoto Todoroki, Half Cold Half Hot; Tenya Iida, Engine; Toru Hagakure, Invisibility; Tsuyu Asui, Frog; and Yuga Aoyama, Laser Navel (Although Eris felt that there was something off about him). Even so, Eris managed to get along with them. Especially with a little girl who lived with them named Eri.

Nami, for her part, helped in the academy's kitchen, proving to be on par with the cook at the academy. Catalia, meanwhile, made sure to give additional classes in tactics to students who used tactics that she describes as 'jumping to battle without thinking and praying they win'. Tya helped in the academy infirmary, while Cath, Mel, and Alice helped as adjunct teachers in some classes.

In her case, Aqua informed her superior about the current situation, receiving the task to stay there and observe Eris while she is in that world. She supposed that the hellhound had something else besides the One for All, but she wanted to confirm it.

One night, Eris was lying on the sofa in the Height Alliance lounge taking a nap.

"Hey, Eris."

Eris turned her head, watching as the 1A students, except for Katsuki, were approaching her.

"What happens now?" Eris asked.

"You see, we were wondering one thing," Kaminari said with a hand behind his head.

"We're supposed to be classmates, but when class ends, you cut off any relationship or conversation with us for no reason. That does not create a good study environment among classmates," Iida explained.

"Oh, that?" Eris asked, crossing her upper arms behind her head, the lower ones on her waist, and leaning on the sofa's armrest. "It's not your fault. It's just that I don't see a reason to associate with anyone, since I'm going to be here for a few days."

"There you are wrong. Every second that we interact with our teammates is important, as it helps us grow as heroes," Uraraka said seriously.

"Anyone would say that she has not had a good childhood. I wouldn't be surprised if her parents were a disaster," Commented Mineta.

Suddenly he shuddered and looked at Eris, who was giving him the most murderous glare he had ever received in his life, capable of making those who were next to him feel tense.

"If you talk to my father like that again, we'll see if your quirk works when I throw you against the wall!" Eris threatened Mineta, causing him to jump in fear.

"If I'm not mistaken, Catilia mentioned that your dream was to be a hero," Midoriya commented. "Is it because of your father?"

Eris glanced sideways at Izuku for a moment. "Yes, that's it. When I was traveling with him, my father told me a lot about how a real hero should behave. I loved his stories. You would have liked to meet him," Eris said.

"Was your father a monster too?" Sero asked.

"There are no male monsters in my world, boy!" Eris exclaimed. "And in any case, he was my adoptive father."

"Adoptive?" Asui asked.

"Yes. I never saw my parents in person, but for as long as I can remember he took care of me," Eris replied.

"When were you traveling with him?" Ashido asked. "What happened to him?"

Eris sighed, as she didn't want to talk about it, but being watched by the students, she decided to answer.

"It was about ten years ago. My father suffered from an incurable disease, which made him worse every year. One night, he left me, and the only thing I could do was cry over him," Eris said sadly. "And since then, Nami and Catilia have taken care of me."

"Since then?" Midoriya asked. "Haven't they been with you before?"

"Oh yeah. It's true, you don't know it," Eris said. "The strange thing about them is that they both came from two objects that my father had in a small chest. A red gem, and a starry quartz."

"What?" they all wondered.

"Are they both artificial beings?" Ashido asked.

"Now that I think about it, Nami seems to have a red jewel above her chest," Todoroki mentioned.

"And what do I know if they are artificial or not?" Eris asked. "To me, they are my sisters, and that will not change anything."

"Understand," Uraka said. "But why this isolating behavior?"

"That... is not for your convenience," Eris said, refusing to talk about it. "After all, it's impossible for it to happen here," Deep down Eris hoped that since she was in another world, Wolfgun and the Orion Regiment would never be able to find her. She wouldn't have to watch out for them anymore.

"You don't need to tell us, but you don't need to isolate yourself here," Iida said. "If you are willing to accept our help, I promise you that you will improve very quickly."

"Improve how?" Eris asked.

"We have seen how you fight and move," Midoriya said. "I think there are some things you should improve."

"I can teach you some hand-to-hand combat techniques that you might find useful," Uraka said.

"Yes, and there are things you must learn because ignorance is not a good adviser," Commented Mineta.

"Let me guess, are you going to teach her in exchange for showing you her breasts?" Sero asked in a mocking voice.

"That's not true! I want to help too!" Mineta exclaimed blushing.

Everyone laughed at Mineta's reaction, while Eris watched them, showing a smile on her face.

The day-to-day did not seem to have any serious incidents, if you ignored the repeated taunts of a 1B student who had to be silenced and dragged away by his classmates, and thank goodness because more than once Eris was about to send him to the school nurse with a broken face just for him to shut his mouth. It was also passable the times that Eris tempted the rest of the students in the school just to see how they would react (poor Mineta, he was the one who suffered the most with this).

One day, the 1A class, along with Eris, Catilia, and Nami, were on a bus heading to a place within the facility. There Eris could see more clearly the hero uniform that each one wore, which went from simple costumes to rather flashy or crazy costumes, although some costumes I would not even call them costumes (Hagakure, for example, was completely nude except for gloves and shoes taking advantage of her invisibility. Many monster girls would wish they had that quirk.)

There was also the teacher of the class, Shota Aizawa (known to the students as Eraser Head), who seemed depressing but respected, the most notable being the long scarf he wore around his neck. Eris has already had some run-ins with him due to her behavior, but she learned not to mess with him when he punished her by pinning her with his scarf in an uncomfortable and embarrassing position.

Finally, the bus stopped in front of a huge circular structure with a gigantic dome-shaped roof.

"Hey, is this where I think?" Sato asked.

"What is this place?" Eris asked.

"Wait till you see the inside, you'll love it," Ashido said.

They all entered the compound, and Eris could see that inside there would be many more different structures and areas with different biomes and rock formations, some inside smaller domes.

Right near the stairs, she could see Aqua, Cath in her battle suit, and a person inside a large astronaut suit.

"Good morning, Year 1A students, and welcome back to the 'Unforeseen Simulation Joint'," Said the person in the astronaut suit, who sounded like a woman.

"Thank you, teacher Thirteen," Uraka said.

"Sorry, what?" Eris asked.

"You must be Eris, right?" Thirteen asked. "I am Thirteen, and I am the teacher in charge of the center, also known as U.S.J. Do you see the different places in the center? Each one represents a typical location of a natural disaster or special situation that a hero must face when he has to rescue civilians."

"So this is where they train to rescue people in danger," Nami said.

"That's right, but this time the class will be something different from the intended use of this place," Cath said. "Catilia was the one who suggested it."

"Ah, that's why you guys have come too, isn't it?" Iida asked.

"It already seemed strange to me that both of them came with us to a class," Yaoyorozu commented.

"Okay, what do we have to do this time?" Katsuki asked with his arms crossed.

"If I'm not mistaken, at the beginning of your course you did a few test battles with All Might, right?" Cath asked, several of the students nodding. "Well, this time we will repeat the test, but this time with a different addition."

"Yes, instead of fighting in a closed building, the fights will be in one of the randomly chosen biomes," Catilia said.

Everyone was surprised to hear the proposal for the event that was going to take place there.

"But why here?" Mineta asked. "Every one of those sites is a death trap!"

"Let us explain it to you and you will understand," Aqua said.

"As they explained to me, it makes a lot of sense that we talked about the tests here," Aizawa said. "You can't always fight a villain in a controlled situation. Sometimes there will be disasters and accidents that can cause damage to the place, and at those times the villains may decide to act to cause more chaos and destruction. These battles will teach you to understand how to fight in places where control is non-existent, where you will have to adapt to that situation to survive. For this reason, and unlike the first test, here there will be no fake bomb to capture. Here the objective will be to capture the rival team using handcuffs. If one ends up wearing a handcuff on his wrist, he will be captured, and if the team members are handcuffed, they lose."

"In other words, it will be a team battle to win. I like that!" Katsuki said, smiling.

"But then how will we divide into 'heroes' and 'villains' like last time, since there won't be an object to protect?" Todoroki asked.

"Good question, Shoto," Cath said. "You have to keep in mind that villains who tend to act in situations like this think they are the heroes of their own story, which makes them very dangerous. This means that each team will have to see the opponent as the 'villain', do you understand?"

"Yes, I think so," Midoriya said.

"But ma'am, here we have one more student," Idia said, referring to Eris. "That makes us 21 in total. Is Mrs. Nami going to participate too?"

"No, I am not going to participate, just to observe and watch. But you don't need to treat me like Miss, Iida," Nami said.

"Considering the special situation with Eris, one of the teams will go with three members," Aizawa said. "First we will randomly form the teams, and then it will be decided in the same way which team Eris will form."

"That makes sense," Eris said.

"But if so, the team whose turn it is to be with Eris will have the numerical advantage," Midoriya said.

"I don't know. Unlike us, she doesn't seem to display a specific Quirk, so she would be more of a rock than anything else on the team," Kaminari said, but he got scared when Eris went to hit him.

"Who are you calling rock, sparky?!" Eris exclaimed in anger at Kaminari's comment, but Aizawa stopped her with his scarf so she wouldn't hit him.

"Calm down, guys," Aqua said. "Take it as a special situation where one side has the numerical advantage, while the other does not. If there is synergy in this team, there will be no problems, but if not, it will be a typical case of quality over quantity."

"Although the fights are more of a test, the scenarios will be real, so both I and the lady will be present to stop the fights if necessary. Still, I urge you to be careful what you do in such locations," Thirteen said.

"In any case, when the teams are decided, and it's decided who they're going to fight against, the location of the battle will be chosen randomly," Catilia said.

"Now that we've talked about this, we're going to explain the rules for each match, so keep your ears open," Aizawa said.

Suddenly Aizawa had a bad feeling, turning his gaze to the interior of the U.S.J. where he could see how a kind of gigantic dark portal had formed near the central source.

"What the hell?" Aizawa asked as the rest watched in terror. 'It is impossible! Shirakumo is isolated in the hospital, so he can't be doing that. If so, who is opening that portal?"

"What is that thing?" Sero asked, terrified. "Are the villains attacking us again?"

"That's a demon portal!" Eris exclaimed, making her look at her for a moment.

With that portal open, it wasn't long until a girl of a race that Eris recognized passed by: a Demon.

"And that girl?" Ashido wondered.

"I don't like this at all..," Nami said.

The demon turned her gaze up from her to look at the group, smiling mischievously. Then…

"Come on, come on, come on! All in! In formation!"

Suddenly, dozens of soldiers with red armor and all kinds of medieval-looking weapons and shields began to pass through the portal, beginning to form long military lines in front of the demon, with what seemed to be officers in front. But they were not the only ones, what seemed to be mechanical armor with green armor also began to pass through the side of the portal, some carrying swords in their arms, other cannons instead of arms, several of them equipped with halberds and shields, others carrying huge fists, and the minority were truly huge in comparison. And if things couldn't get worse, a large number of monster girls in purple armor began to emerge from the other side of the portal, which some officers had to stop so that they would not launch out of control and form like the other groups.

"But who are they?! Villains?!" Ojiro asked.

"Worse! Nothgardian soldiers!" Catilia exclaimed.

"What the hell are they doing here?" Eris wondered, looking at that army that had just appeared before them.

Finally, when all the soldiers had passed, two more people walked through: a huge, heavily muscled human wearing only a pair of torn pants and a bone mask covering his head from which only a pair of glowing red eyes were visible from the skull sockets, and a man dressed as an armored western cowboy.

Eris gritted her teeth as she saw this person walk through the portal before it closed.

"I've finally found you," Said the man dressed as a cowboy. "It doesn't matter where you go. It doesn't matter where you hide. There is no place where you can escape from me. You get it, creature!" He exclaimed, turning his gaze upwards, more specifically to Eris.

After those words, Eris couldn't contain his inner rage anymore, spouting out a single word.

"Wolfgun!" Eris exclaimed furiously at the person who addressed her.

Wolfgun, Commander-in-Chief of the Orion Regiment of the Nothgard Army.