"Do you want to get expelled?" Aizawa-sensei growled, glaring at Moe. So far the bus trip to the USJ had been far more tense than Izuku would have liked, mostly because of Aizawa-sensei having to cover for All Might and Moe being, well, Moe. "Again?"

"I'm not in your class, besides my grades are too high and you respect me now so even if I annoy you, you won't expel me." Moe stuck her tongue out at Aizawa-sensei which just earned her another growl from their sensei, but nothing else was said.

"Woah, I don't think I've seen anyone talk back to Aizawa-sensei like that, not even All Might." Denki muttered from beside Izuku. The bus seating was split down the center so the two sides were facing each other, giving it a far more personal atmosphere. "Katsuki, how come your sister is so much cooler than you?"

Instead of swearing, Katsuki just growled and sunk further into his seat, arms crossed as he glared out the window. That was probably a sign of maturity.

"Hey now, my little brother is cool." Moe swung to hang her arms over the back of her seat, and looked at the class. "Yes, he's a bit of a jerkwad, but he wants to be a hero, and anyone that wants to be a hero, no matter how much people tell them they shouldn't, is a pretty cool guy in my books. Isn't that right, Deku?"

"Right!" Why was she smiling at him like that?

"Moe, if you keep this up, I'll replace you with a rescue dummy." Aizawa-sensei kicked the edge of Moe's seat. "I'm not going to let you take over my class like you did All Might."

"Well, if you replace me, I'm sure Deku will rescue me." She gave him one last wink before sitting correctly in her seat. "He's put a lot of work into his quirk you know."

"Hey, you know Izuku," Ejiro spoke from beside him. "Your quirk's pretty awesome. It reminds me of All Might."

Crap! Was it that easy to see through? Well, Moe already knew, and there was a chance that Katsuki knew, but that was because they overheard their conversation, so there was no way that was it. Or was it? Still, no matter how he looked at it that was true wasn't it, he did have All Might's quirk so of course they would be similar. "Well, I mean, I umm."

"Dude, relax it's a compliment." Ejiro made his own hands hard and pointy with his quirk. "It's a lot cooler than my quirk."

"Hey," a giant finger from Ituska poked Ejiro in the chest. "Dude. Your quirk is great; sometimes simple quirks are all it takes."

"Hehe, sorry Itsuka, guess I spoke too soon."

"You sure did." Itsuka nodded her hands returning to normal, then she turned her green eyes towards Moe. "What's your quirk, Moe? I don't think you've ever used it. Does it have to do with your awesome hair?"

"Hehe, oh you," Moe made a fake girly flattery move and wiggled in her seat. "But, not really, I mean, yeah, my hair is kind of a part of my quirk, but it's not really something I use with my quirk. Like Fumikage over there, I look cool but it's not really directly related to my quirk. To be honest I have no idea where I got my hair from."

"That's great but what about your quirk? You're in the Elite Four right? It has to be something awesome!" Hanta asked, leaning back in his seat. He was staring at Moe a lot. Why did Izuku want to punch him for that? Oh right, uber crush. And thighs. If anybody was going to get their head crushed by those thighs, it was going to be him!

Wait. What?

"Believe it or not our quirks aren't that awesome." Moe turned in her seat again, one arm draped over the side of it. "Nejire just lets her shoot out blasts of energy in exchange for her stamina. Mirio lets him fall through things. Tamaki's is a quirk that I would say is one of the most powerful because it lets him do so much, he can change his body with how he looks. Like, he eats a clam and he can make hard clam shells."

"Yeah, but what about you?" Mina stomped her feet and flailed her arms.

"Hmm, well." Moe laughed and popped her neck, then her knuckles. "Let's just say I can get real fired up."

"That's not fair! Why won't you just tell us?"

Tsuyu, ribbited and stuck her tongue out for a moment. "Haven't you noticed with how she treats Izuku, she likes to tease people."

"Guilty!" Moe laughed, "But if you really want to know you can ask my little brother about how awesome his big sister is."

All eyes turned towards Katsuki, even Aizawa was glancing towards the younger Bakugo with mild interest.

Katsuki looked at their classmates and took in a deep, calm, breath. "Fuck off."

"You see, this is why no one likes you." Itsuka crossed her arms and pouted.

XXXX

Moe smiled and stared at the vastness of the USJ, it had been way too long since she had actually done rescue training. Man, back then, Nejire had fallen asleep after trying to fly and Tamaki had to save her by turning his entire body into jello. She wasn't sure if Tamaki was over that considering how Nejire thanked him with a kiss to the cheek.

Nejire, on the other hand, probably didn't even remember it.

Thirteen was talking about how they made the USJ and the students were asking questions, well today wasn't going to be as fun as Hero training would be, and All Might wasn't even here for her to mess with! Still, at least her brother was still being a Tsundere.

A dark static noise behind her, down the stairs, drew her attention and she turned to look. Finally, something that wasn't boring lectures. Wait, she really shouldn't be happy that something like this was happening. Even if she totally was. Though, that dark spark and spiralling gas that grew into a large wall of black mist didn't sit well with her.

A white gloved hand attached to a mop of light blue hair emerged from the mist, a glint of red eyes behind the fingers sparkling darkly. That definitely wasn't on the schedule.

"Uh, Sensei?" Moe called out, glancing at Aizawa and pointing towards the emerging man, with dozens of others following him out.

"I think training just jumped out of the pan and into the fire." She said, a small smirk on her face. An audible smack could be heard from behind Izuku, Katsuki facepalming hard enough to make his face red. "Permission to turn up the heat?"

XXX

Tomura observed from the back of the crowd, watching the teachers up the stairs. Someone was missing.

"Where's All Might? Our information said that he'd be here." Tomura scratched his neck softly, the annoyance of incomplete data starting to get to him. He glared up the stairs. Two teachers, and someone else. Not quite tall enough to be a teacher, but taller than the students.

"Well, it's no matter. Even if we can't break his body, we can still break his spirit." he said, a malicious grin crossing his face.

"Villain Vanguard Squad, Attack."

XXX

"It would be a wasted effort for me to order you to stay put, wouldn't it?" Aizawa asked Moe, as he regarded the people flooding into the arena below them.

"I mean, I'd hear you, but like hell I'm sitting this one out! Besides, I do have my license, so technically, I can't get in trouble for helping." Moe said, almost boastfully, throwing her hands wide behind her.

"Fine. Just keep up." Aizawa said, tensing for the jump down the stairs, and pulled out his scarf.

She glanced back at Izuku, and made sure to give him an oh so obvious wink, if only so that his classmates would tease him for it later. "Now, take a good look. This is how the pros work!"

She channeled the heat inside her out through her palms and released the built up pressure, a huge blast of steam launching her up and forward like a rocket.

"Man, how cool is that?" Eijiro said in awe, watching Moe dive towards the villains, her palms and feet igniting on the way down.

A tremendous explosion and quaking shook the stairs as Moe hit the ground like a meteor, sending a dozen of the villains flying, cracking the concrete with her impact.

"Hey Aizawa, what was that about keeping up?" she said over her shoulder at Aizawa, just now getting to the bottom of the stairs.

She heard the audible sigh from the exasperated teacher, and gave a chuckle before launching into a steam powered spin, slamming her emblazoned feet into the thick hide of one of the heteromorphic villains, hitting him hard enough to send him careening into the wall of one of the far off domes.

"Thanks for flying with us! We hope you enjoyed your trip on Burnin' Air!" She called out as the dome crumbled from the impact. Another dumbass was sent flying into the ground with a powerful blast of heat right to the face. He started to scream. "Oh come on, that's just like a really bad sunburn, I'm sure you'll be fine. Well maybe."

If this was all there was, she might not even have to kick it up a notch. Hell, her brother's class could probably take these mooks.

Or at least they could have if a giant black fist hadn't just slammed into her stomach.

XXX

This wasn't right. Some fiery bitch was tossing aside his cannon fodder around like, well, cannon fodder. But she was doing too fast, barely slowing down as she moved from one opponent to the next, her attacks releasing more steam and fire as she hit and jumped.

He watched her jump and knock over at least twenty of his team, the itching on his next getting even more irritating. Finally, after she had knocked out one of their biggest heavy hitters, he made up his mind.

"Nomu, take her out. She's too much trouble." Tomura said to the hulking black monstrosity next to him. There was a growl of acknowledgement, and the monster moved in a burst of speed.

XXX

Breathe.

Just fucking BREATHE, dammit.

Her diaphragm was obviously on vacation now. She'd probably have one hell of a nasty bruise. And at least one rib wasn't where it should be.

Hot air expands. Forcing her heat inward, she forced her chest to expand, taking in that first sharp breath that kick started the whole system. That son of a bitch. She pushed upwards, taking stock of her body, nothing but a rib or two was actually broken, she had managed to cushion the blow with another blast of hot air. No doubt Recovery Girl would have a hissy fit if she tried to fight with a broken rib.

But she could deal with that later.

More importantly, how was the fight? Most of the mooks had been scattered, and that big hulking black bird-brained son of a bitch that had blindsided her was currently manhandling Aizawa-sensei. His arm was bent in a funny way, but he was still struggling. That was good. And it looked like that blue haired jerk was walking towards Aizawa.

He must be the boss.

Time to see how he liked a sneak attack.

XXXX

What the hell was that whistling? It sounded like a damn tea pot being left on the stove for way too long? How was he supposed to deal with this annoying Eraserhead with such a stupid noise hanging around, it was even wrose than when the audio was freaking out on his games! Guh, what was it?

"Tomura!"

Huh?

He looked up just in time to see her appear right in front of him. Her fists cloaked in fire, her feet a jet of flame shooting out from her now bare feet. Time seemed to slow as he watched this woman glare at him, her eyes were naught but burning coals of fury. Only one thought came to his mind as he watched the flame from her foot grow in intensity.

Why the fuck was it so hot?

He understood what that whistling was now. It was her jets.

Hot air rushed over him, making his eyes water, and he had prepared for his game over.

But the Nomu had its orders. Keep him safe. Without thinking the Nomu caught the girl's knee and held on, its black skin sizzling at just touching the woman.

XXXX

"Hold her up!" The jerk wad of a boss shouted, moving towards her. Was he a dumbass?

Well he was dumb enough to attack a school for heroes so yes, yes he was.

Moe stopped struggling as the large bird-brained, honestly she couldn't really call it a person at this point, it almost felt like it was just some kind of a robot with how it listened to orders, held onto her with both arms. Honestly, she hadn't meant to be grabbed by the guy, but he was a lot faster than he looked. But being this close to her while she was in Flame Mode was probably hurting the guy a lot. Its thick skin was already sizzling just from holding on to her.

"Hey boss!" One of the mooks ran up to their leader and gestured towards her. "That one is pretty hot, why don't we save her and-"

The boss didn't so much as blink, just placed his hand on the mooks face. Within seconds the man's body began to turn to dust, he was dead before his body hit the floor.

Was this the part where he started to monologue?

"Where's All Might?" The boss, Tomura or something, asked her, his beady red eyes glaring at her as sweat began to pool around his cracked dry neck. Heat was really bad for dry skin. "If you don't want to end up as a pile of dust, you'll tell me."

"He's just running late." Moe shrugged. It was okay to lie to a villian, wasn't it? "But don't worry, I'll make sure he'll be here when I kick your ass."

"You're annoying." He started to extend his hand towards her. Seriously. Was he really this stupid? She was currently boiling the big guy that was holding her. "I like to make annoying things disappear into dust."

Well someone was grumpy.

Moe took in a deep breath, wincing as the air brushed her bruised rib. She gathered her heat, keeping it just inside of her, ready to burst out and enter Inferno Mode. Seconds passed and she watched as that grow grey hand closed in on her.

"Bah." Tomura growled tearing his hand away from her and shaking it. "So fucking hot."

"Ohh, so sorry, I guess I'm too hot for you, want me to blow on it for you?" She gave him a fake pout.

Tomura glared at her and made a dumbass mistake. He lunged for her face. Really touching her anywhere would be a bad idea. She unleashed all of her heat. The rapidly expanding air knocking back both the big guy and Tomura, the later of which screaming and touching his hand in shock.

"You cheated! I touched you but you're not turning to dust." He scrambled back from her, panic overcoming his face as one of those severed hands fell from his face. "I touched you!"

"With burnt, dead, flesh." Moe laughed, it felt so good to go all out for once. "You see, back then, I was so hot that anything that came in contact with me would burn. But now, that I'm going all out. You're lucky you're not cinders right now."

As much as she was talking a big game, her hair was already orange and nearing the red. She needed to hurry this up before she ran out of fuel. Inferno Mode was her trump card, but it consumed more than ten times as much as Flame Mode did. That and it hurt her allies so she needed to be careful with using it.

"Let's make it so you'll never-" That big guy charged at her, his flesh burning and sizzling with each step it took towards her. But it was regenerating. But each step it took, was slower, sluggish, and way too uncoordinated. The creature probably had some form of heat or fire resistance. But that didn't matter when his insides were likely boiling.

The creature stood in front of her, its large muscular body wavering from the telltale signs of a heat stroke. She felt sorry for it. She really did. With an uppercut powered by flames she cracked the creature in the jaw and sent it tumbling backwards.

"Right then, since you like to use your quirk to kill people, let's make it so you can't use it ever again."

She took a step forward, her foot sticking to the concrete for a moment as it started to melt. Tomura scrambled back, his eyes wide in fear. His left hand was charred; even with healing like Recovery Girl's, that burn was going to be impossible to heal. Even if he did get his hand back, his quirk was gone from that hand.

She gathered some flame in her hand and pulled back, fully intent on blasting his hand off.

Right when she launched the blast, a portal appeared in front of Tomura and another one just to the side of it. Her own blast hit her, right in the face.

"Tomura!" The black cloud guy shouted. "We should leave. It's too dangerous here with her!"

"Then get us out of here!"

Moe blinked, the heat from her own blast had no effect on her but the flash of light from her own fire blinded her for just a moment. She saw a portal appear below Tomura and swore. She didn't have time to aim. She just wanted to neutralize his quirk.

Her hair was red now. She was nearly out of fuel.

Gathering the last of her heat she launched two more rays of flame. One at Tomura, and one at the portal guy, she set both to their maximum intensity and kept them focused. The portal guy reacted on reflex trying to deflect her attack back at her.

But the screams of Tomura distracted him. She had burned his right arm clean off in a matter of seconds.

"You cheating bitch!"

Dismemberment wasn't the most heroic way of dealing with someone. It was heavily frowned upon, but it wasn't like she killed the guy.

With the last of her heat spent, she entered Burn Out. And everything felt cold. Way too cold.

"Moe!"

Oh look, her prince in green was here to keep her warm.

XXXX

"What happened to her?" Itsuka asked, running beside Izuku as he moved to catch Moe before she fell.

Moe's skin was pale, almost bluish in color, and her normally vibrant flaming hair was gone, replaced with a smooth bald head. Just touching her was painfully cold.

"She's entered Burn Out!" Izuku shouted looking around for someone, anyone that could warm her up. "Her quirk lets her store fire and heat, but when she uses too much, she gets like this!"

He'd never actually seen her in this state, at most he'd seen her go into her red haired state, but this was worse than he ever could have thought. She looked so helpless. So cold. Izuku looked around, Kacchan still hadn't gotten back from where ever they sent him, but even his explosions wouldn't help much, they needed, "Shoto!"

"Hmm?" The half ice covered boy came running over.

"I need you to use your fire on her." Izuku helped set Moe down, her entire body shivering from the cold.

Shoto nodded and kneeled down. A small flame in his hand. "Okay."

Was that it? That wasn't anywhere near enough.

"You need to go all out on her. She absorbs fire, Shoto so she'll be okay, you can't burn her."

Shoto looked at him for a moment. "But, I don't like using that side of my-"

"Look!" Izuku grabbed him and pointed at Moe. "She's suffering and you can end that suffering but you're not! It doesn't matter why you don't like using that side of your quirk! You want to be a hero right! So use all of your quirk to help people."

Shoto blinked. And nodded. "It's hard to do that with you grabbing onto me."

"Sorry." Izuku muttered and took a step back.

Flame burst out from Shoto's hand and engulfed Moe. Instead of spreading out like a wave around it condensed in on her, none of the flame going to waste as life began to return to Moe. Her hair sparked to life once again, taking on a red hue.

A minute of constant fire passed and Moe finally stood up, her hair now an orangish color. "Alright, Shoto you're going to be my second sidekick after Izuku."

Well at least she was still the same.

AN: Ara Ara Ara Ara Ara Ara Ara Ara Ara Ara