"Today, in hero foundation studies, you'll be doing a rescue study, supervised by a three-man team of me, All Might, and someone else."
Aizawa stated in front of the class in his usual indifferent tone.  Kirishima raises his hand excitedly.
"What exactly will we be doing, sensei?"
He asked with wide eyes.
"You'll be doing what heroes do: saving who you can in floods and other dangerous environments.  It'll be up to you whether or not to wear your costume, and we'll be meeting on a bus to go to the training area since it's a way off."
Aizawa explained, leaving the kids to their own devices to prepare.

Walking out of the girl's locker room an all too familiar voice sounded in Amber's ears.
"What were you doing in the girl's locker room; if you're not a girl? Huh, trap?"
Bakugo laughed and pulled at their costume's headpiece.
"I can't believe they even let you wear such a stupid costume. No one will take you seriously with these dumbass satellites on your head!"
"Bakugo-San, did you really come to UA to be a hero? Constantly harassing Amber when they're just trying to live their life isn't very heroic."
A small dark green haired classmate approached with frog-like features.
"What did you say to me, frog face?"
Bakugo turned his attention to the girl, red lines forming in his eyes.
"We both know very well that there is no gender-neutral bathroom here, and they're probably uncomfortable using the males' room because of you."
She stated bluntly. Bakugo was ready to attack,  but he was caught too soon.
"Bakugo! My office, now."
The school counselor, family hero, Ms.Cloud, reprimanded. Bakugo scoffed but did as he was told. Mumbling curses under his breath as he glared back at Amber, and the other girl while following after his superior. 

Later on the bus on the way to USJ, in the back was Amber, in between Izuku, and the frog-like girl from earlier. 
"My name is: Tsuyu Asui, but you can call me Tsu; I tend to say whatever's on my mind."
The frog-like girl, now introduced as Tsu, explained. 
"I'm Izuku, and this is Amber.  Us, and Kacchan, grew up together—"
"Shut up, shitty nerd!"
Bakugo interjected without so much as a turn of his head. 
Amber signed:
"So much for therapy."
With a sigh and a shake of their head.
"I'm now, it's kind of odd, Izuku and you, have quirks that remind me a lot of All Might and Present Mic. But, Izuku is a lot like a young All Might, but you're a polar opposite from Present Mic."
Tsu bluntly stated. 
"Wow, harsh,"
Amber signed. Izuku put his hand on their shoulder, reassuring them that he thought they could be just like their hero: Present Mic.

The students got off the bus and were soon greeted by two new heroes.
Thirteen and Ms.Cloud

"Every disaster and accident you can imagine, I built this facility myself, I call it: The 'Unforeseen Simulation Joint'."
Thirteen explained, the other hero smiling at his side.
"It's space hero, Thirteen, and comfort hero Ms.Cloud!"
Izuku exclaimed. Bright smiles adorning his and Amber's features.
"I love them! They do their best work in rescue scenarios! Ms.Cloud has her own hero agency based around abuse victims!"
Ochaco exclaimed before Aizawa questioned 13:
"Thirteen, where's All Might? I thought he was meeting us here."
"About that Aizawa-San, it seems he just about reached his limit during his morning commute.  He's resting in the break room."
Thirteen explained; Aizawa let out an irritated sigh:
"The height of irrationality. We should be on guard anyways; so be it, let's get this thing started."
Aizawa begrudgingly stated.
"Before we start I have one or two points, or three, four—as many of you are aware, my quirk is called: Black Hole; it can suck up and destroy anything."
Thirteen started before Izuku interjected excitedly:
"And you've used it to save many people!"
"Indeed, but my power can easily kill. I'm sure there are many of you here with similar abilities.  In our superpowered society, the use of quirks is extremely limited and monitored. That system may seem like a stable one, but we must remember it could only take one false move with an uncontrollable quirk for people to die. In Aizawa's fitness test, you learned of your own potential. In All Might's battle training, you learned how your quirk can pose a threat to others; this class will show you a new perspective! You will learn how to use your quirks to save lives. You'll understand that your quirks aren't meant to cause harm but to help people.  That is all. I thank you for listening!"
Thirteen took a bow as the students took in their words. Amber closed their eyes and inhaled sharply. They were already thinking out scenarios and how to work through without hurting people with their quirk.
"Remember to practice consideration over how the victim feels, AND how the suspect feels! It can make saving the day much more effective to think about everyone's mental state, and help the victim not be traumatized! The suspect may even be able to recover from their crimes if dealt with effectively!"
Ms.Cloud interjected with a bright smile. 
"Great. First off...—"
Aizawa started, snapping Amber out of their thoughts, before everyone's attention was brought to an increasingly large black portal that multiple figures were coming out of.
"EVERYONE HUDDLE UP AND DON'T MOVE!  THIRTEEN! PROTECT THE STUDENTS!!!"
Aizawa yelled, the students obeying in confusion.
"What are those? More battle robots like in the exams?"
Kirishima asked, to which Aizawa responded:
"No, these are...real villains."

"Thirteen and Eraser Head, is it? According to the staff schedule I received yesterday, All Might is supposed to be here..."
The black mist spoke. At the head of the villains was a slim man, dressed in black, with hands all over his body and thick baby blue hair.
"We've come all this way and brought so many playmates. Where is he?...
I wonder if some dead kids will bring him out?"

Aizawa insisted on fighting the group of villains on his own. The kids were going to escape with Thirteen but were stopped by the man of black fog.
"I will not allow that. Greetings, we are the league of villains. Forgive my audacity. Today we have come to U. A.  Highschool, this bastion of heroism... to end the life... of All Might, the symbol of peace.  We were under the impression that he would be here today, but it seems that his schedule was revised?  No matter, my role remains unchanged."

Bakugo and Kirishima tried to attack before realizing it was no use. 
"Yes... Students though you may be, you are the best of the best."
"No, get back; both of you!"
BEGONE.

Writhe in torment, until you breathe your last.

Suddenly Izuku found himself underwater.
"He teleported us!  Must be his quirk.  They wanna kill All Might?  Just what the Hell is going on here?!"
Izuku wondered before he froze in fear at the sight of Amber's limp body in the water.  Seeing the water that filled their lungs, he tried to rush to them only for a villain to emerge from the watery depths around them, blocking him from them.
"There you are!"
The aquatic like villain spoke.  Eliciting a shrill, gasping, cry from Izuku.
"It's nothing personal kid but... say goodbye!"
He pridefully threatened, when unexpectedly, Tsu came in and kicked him in the side of the neck with both her feet.  Wrapping her tongue around Izuku's waist and swam up to the surface.  Throwing him, and another small boy onto the deck of the ship.  As she crawled up the side, Izuku pleaded:
"Amber, they- they're still down there, they can't swim please, ... Help them they'll die!"
Izuku cried out, Tsu was quick to jump into the water looking for them, worrying about them being caught by a villain. Tsu emerged with the classmate back onto the boat.   Amber wasn't breathing.  Izuku began to panic, shaking their shoulders as Tsu, and the boy started to crowd around them.
"GIVE THEM SPACE!!"
Izuku snapped, before turning back to them.
"Amber please, wake up!!"
Izuku wailed.  Tears forming in his eyes.
"Midoriya-Kun, perhaps they might need mouth to mouth resuscitation."
Tsu proposed; Izuku looked back at her then back to Amber.
"I'll do it!  I'm a great kisser!  The trick is to really pound into her breasts."-
The small purple boy volunteered, only for Izuku to glare at him.
"How dare you?!  This is serious, and they're not a girl you asshole!  They're intersex!  They're my best friend... They'd want me to do it."
Izuku looked back down to Amber once again.  He took their chin in his hand, turning it forward and tilting their head back, Gulping before he lowered his face to Amber's, his lips meeting hers.  He sharply exhaled two breaths into them, pulling away and pushing into their chest harshly two times, before repeating the process.  Suddenly after a few repeats of the process as Izuku pulled away Amber began to cough up water, breathing once again they propped themself up on their elbows.  Accidentally head butting the Izuku who was on top of them.  Izuku rubbed their head, eyes clamped shut and teeth clenched.
"Ow... Amber-Kun!  You're ok!"
His eyes opened back up, glimpsing at them with relief and excitement, he tightly held them in his arms. 
"What-- what's going on?  Where are we?  I had this crazy dream, some weird group of villains infiltrated UA; and this one guy with hands all over his body fell in love with my sister."
Amber drowsily, and quietly uttered, not even noticing the others around them, too focused on why they and Izuku were soaking wet and he was straddling their waist.  The short, purple, youth was drooling on his knees and also having an existential crisis.  As he was extremely interested in the way Izuku had touched his dear friend, he questioned his sexuality as Amber had been stated to not be a girl.
"Well, I don't know about the second part but the first part actually happened.  Their fog guy teleported us all to the flood zone, and some villain would've gotten to you if it weren't for me, since somehow you're in a hero school without the basic skill of even being able to swim.  I fought off the villain and Tsu came after you after Izuku had told her your situation.  You were unconscious and not breathing, so Izuku gave you mouth to mouth"-
Tsu explained before Amber's eyes widened looking at Izuku.  Realizing their position he blushed and got off.
"Hey, don't talk about them like that!  You wouldn't understand, they tried to learn, they can't, they shouldn't give up on their dreams for one small thing!"
Izuku blurted out, defensive of them.
"Anyway, we're getting off track, we need to figure out what to do about, y' know, the villains surrounding us?"
Mineta irritatedly chastised.
"You're right, you're right.  They know our schedule.  The simplest explanation is that they caused that media-rush the other day to get their intel.  It's like Todoroki said, they've been waiting for this chance, and they've prepared for it well."
Izuku analyzed, the purple, perverted boy, now shaking in his boots.
"But, but!  There's no way they could ever kill All Might!  He'll thrash 'em once he gets here.  Bam!  Pow!"
He refuted; Tsu, looking down at him.
"Mineta... They must've figured out a way to kill him.  Otherwise, why come here just to get beaten?  I wouldn't put it past them.  That one guy promised to kill us too, after all.  Who says we can even hold out until All Might gets here?  Even when he does show up... Who says we won't be killed?"
Tsu explained, causing him to whine.  Then abruptly the villain from earlier emerged from the water, eyes on Tsu up on the boat. 
"That brat, I'll kill her!"
He screamed with loathe evident in him.  It was then Izuku began to mumble to himself rapidly, Amber seemingly somehow following what he was saying, finally, he took a deep breath.
"Hell if I know!  If they... If there's even a chance that they have a way to beat All Might...!  Then we have too... We have to fight to win!"

"You're contradicting yourself Midoriya!  How can we possibly fight, you dumbass?  These guys might even be tough enough to kill All Might!!  Our only hope is to hide somewhere until the U.A. heroes come to rescue us!"
Mineta distressed.
"Mineta.  Those guys down there... They're clearly suited for aquatic combat, right?"
Izuku started, only to be interrupted by Mineta.
"Stop ignoring my point!"
"So the ringleaders must have recruited their team knowing about USJ's different environments."
Tsu inquired.  Izuku nodding.
"Exactly!  Their intel told them that much at least.  But with all their careful planning one odd point sticks out.  They zapped you...  Asui...errrr Tsuyu... Into the flood zone!"
Izuku deciphered, only to be met with blank expressions from the lot of them, except Amber.
"I get it, they don't know our quirks!  So they scattered us so they'd have an advantage in numbers!  So we can exploit what they don't know to our advantage!"
Amber clarified,  their voice soft, but loud enough to make out to the whole group. 

"I can jump really high... And stick to walls.  My tongue can stretch to a maximum of 20 meters.  Also, I can spit up my stomach to clean it... And secrete fluid that stings a little.  Those last two aren't that useful.  Just forget about them."
Tsu clarified as Mineta in the background was mentally sexualizing the last thing she mentioned about secreting liquid.

Mineta began to illustrate by taking one of the balls from his head and sticking it to the wall.
"It's really sticky.  If I'm feeling good it'll stick there all day.  A new one'll grow in the old one's place, but if I take too many, I'll start bleeding.  They'll bounce off my own body without sticking to me."

"I have super strength, but... Immediately after using it... It messes me up... It's a double-edged sword."
Izuku began, explaining his own, Amber began signing to him what they knew of their own quirk.
"Amber's quirk is similar to Present Mic's voice; but much more extreme.  They can raise their voice to incredible volumes and pitches, the airwaves can burst eardrums, and even explode things from the inside out, as well as create a sonic boom.  The sound waves they create can cause disturbances through air and water as well.  Like pushing something away, or creating a giant whirlpool in the water."
Izuku translated for Amber, and they nodded and hugged him.  They then whispered something to him, and he gestured for the group to huddle around.

"I'm getting bored over here.  Let's finish this thing."
One of the villains began to charge at the boat, Mineta's balls covered Izuku and Tsu's ears and  Amber let out a harsh, shrill, scream.  The sound-waves making the villains growl and grimace on pain as the charging one had been sent back into the water, the water imploding on itself and causing a whirlpool.  Sucking the villains in, Mineta's purple, sticky balls went around and wrapped around the villains keeping them from escaping the water's tide.    As they tried to break them off because of the balls they stayed around them and released the gas.  Tsu escaping, Tsu had her tongue wrapped around Izuku and Amber's waists, with Mineta on her back tying the two together as they flew through the air.

Back at the central plaza...

While the students distracted the ominous warping enemy, and Iida escaped to go find help, Delilah was healing Thirteen, who had been severely injured by his own quirk.  A new layer of skin forming under where Delilah touched them.  Shigaraki was having trouble against Ms.Cloud, having already decayed Aizawa's arm, he now was trying to avoid the cloud-like drug substance she consistently blew out, while trying to reach her to kill her.  She, however, was proficient in dodging and speed.  Unfortunately, it wasn't enough as he got a hold of her arm, it now beginning to decay.  She let out a scream, making Delilah look over, she shakily rushed over, using every shed of bravery she had to step in between her and the blue-haired male.  Healing the injury of the smaller hero.  Instead of stopping her, the villain seemed frozen in place, gazing at her, and her power with fascination.  That was, until, she tried to interfere with the Nomu torturing Aizawa.  As she ran she felt a hand stop her, with only four fingers.
"That's a cool power.  You're not a hero, are you?"
He started, he pulled her back close to him, her backside up against the front of his body.  The hand that held her wrist now had wrapped itself around her waist.  The other hand around her throat, occasionally creeping up to her lower face and cheeks.
"No, you're too pretty and pure for that aren't you?  Like a delicate doll, yet, you had the bravery to risk your own life to save your friends.  That must mean you're sweet and loyal too huh?"
Shigaraki inquired, whispering in her ear, the warm tickle of his breath on her small ebony ear. 
"Delilah!"
The pro hero, Ms.Cloud, called out; only to receive the deadliest of glares from Shigaraki as his grip tightened on the girl's soft umber, twilight-like skin. 
"If you come near her, I'll do far worse then kill her."
He threatened before his eyes once again marveled at the sight of her dark copper complexion, a chuckle escaped him.
Kurogiri began to form behind Shigaraki.
"One of the students escaped, Shigaraki."
He informed, getting his attention, Shigaraki began to groan, his hand on the girl's neck moved to his own.  Furiously scratching at the lacerated skin.  Mumbling:
"Game over"
Under his breath. 
She noticed this and placed her hand under his.  Quietly humming a soothing melody; the wounds on his neck beginning to close.  His eyes widened, looking at the girl who looked back at him with care and concern.  His heart beginning to hammer in his chest. 
"Why are you doing that?  Don't you hate me?  You guys have won.  You could do anything to torture and punish me, but you're... Caring for me?"
His pupils enlarged, his eyed still wide and curious.  His hand on her waist let her go, but she stayed.  That hand reached up and removed the hand from his face, showing the grotesque sight to her.  She was unfazed.
"Why don't you hate me?!"