AN: Guest - Sorry, pairings have been decided months ago and drafts of the inevitable confession scenes have already been written. If you would like to see more stories with Izuku paired with someone from 1-B, I would encourage you to try your hand at writing. Even if it's just a short one-shot.

As for the rest, well, I think you'll like how I handled that.

bhna cote - Glad to be of help.

"I~ Zu~ Ku~ Kun~" Izuku heard his sister approaching, barely having time to brace himself on the table before she slammed into him, wrapping him in a hug. "How is your first real day at UA going?" Himiko looked around the table, a huge smile on her face. "Are these all your new friends?"

Izuku's face was turning red from the attention. "H-hey Himi. Yeah, these are some of my new classmates!"

She quickly let Izuku go to stand up and wave at them. "Hi! I'm Himiko Midoriya, Izuku's older sister. I'm a year ahead of you all in Class 2-B. Nice to meet you all!"

Izuku looked around at the people seated at the table. Tsuyu's face remained unreadable, Uraraka was staring wide-eyed at Himiko, and Iida looked like he was about to read Himiko the riot act. He felt the heat leaving his face as he rubbed the back of his neck.

Finally, Tsuyu spoke up. "I'm Tsuyu Asui, kero."

"I-I'm Ochako Uraraka, nice to meet you!"

"Running, ignoring personal space, ignoring the safety of other students for no good reason! I can't believe an upperclassman would be so lax!"

"C-calm down Iida!" Izuku laughed nervously before turning to Himiko. "That is Tenya Iida, he is a bit strict about rules."

Himiko just rolled her eyes and giggled. "Oh, I can't wait until you meet the rest of my friends!"

Ochako and Tsuyu turned questioning gazes to Izuku.

"S-she is friends with both of her class's recommendation students." Izuku said, as if that would offer some sort of explanation.

"I don't see what's so funny about meeting recommendation students? Clearly they should be quite smart and talented!"

"Todoroki is also smart and talented, kero." Tsuyu pointed out.

Himiko merely laughed. "Well, it was nice meeting all of you, but I've got to get back to my friends! I'm sure I'll be seeing all of you around!" With that she turned around and began skipping away.

Izuku watched as she went to a different table with her own group of friends, and he noticed that Habiki had his phone out and was recording the whole time. When she sits down she flashes him a huge smile and waves before turning her attention to her own lunch. Sighing he turned around and faced the group he was sitting with before grabbing his chopsticks.

"She is scary, kero."

Ochako nodded in agreement. "Yeah, I didn't expect her to be so different from you!"

"I must question how someone so undisciplined managed to make it through the first year here!"

"Sorry about that!" Izuku nervously laughed as he rubbed the back of his neck. "She can be kind of overwhelming, but she is really a great person, I promise!" Izuku shot a look back over at the table she was sitting at. "I'm pretty sure she did that on purpose."

After lunch they all returned to their homeroom waiting for Heroics class to begin. Suddenly from behind the door they hear. "I am… walking through the door normally!"

Izuku perked up and looked as the door slammed open, and All Might walked into the room. "Good afternoon, aspiring heroes! Today I am your teacher!"

"Wow!"

"So Cool!"

"I can't believe All Might is our teacher!"

"Today we will be evaluating your skills against actual opponents!" He held up a small card that read 'Combat'

"Finally, a chance to show you extras who's the best." Bakugo declared loudly.

"We will be holding mock two on two team battles. But first things first! All heroes need their costumes!" He held out a remote and pushed a button, and lockers hidden in the wall opened, revealing 20 cases.

The twenty students excitedly retrieved their costume cases and left for the changing rooms, slowly regrouping outside the school as they trickled out of the locker room.

Izuku was busy looking over his costume to make sure everything was in place when he heard Ochako coming up behind him. "Hey Midoriya! Your costume looks amazing!"

Izuku turned around to see Uraraka and was momentarily stunned by how pretty she was. "H-hey Uraraka. Y-your costume looks good too!"

"Thanks! It's kind of embarrassing though." Uraraka was blushing and rubbing the back of her head. "I didn't realize they would make it a skintight bodysuit?"

"That's actually a problem with support companies." Izuku recalls. "If you don't specify how you want your clothes to fit they default to skintight bodysuits. However, if it would make you more comfortable, you could add a second loose-fitting outer layer?"

"Really?"

Izuku nodded, rolling up one of his sleeves to reveal the black bodysuit underneath. "I actually ended up doing that with my costume, I have a skintight bodysuit underneath, and then a looser fitting jumpsuit."

"That's a great idea!" Uraraka pumped her fist in the air. "And I can always pick one of the suits later! I'll have to do that!"

"Aww, I would love having even a skintight bodysuit or anything!" Toru came up wearing… gloves and a pair of boots.

Izuku just gave her a look of disbelief. "Please tell me that you've got more to your costume Hagakure."

"What? No! How would I be able to use my invisibility then?"

"Seriously? They didn't tell you about infused fabrics when you put your order in for your costume?"

"Infu-what?"

Izuku sighed and wondered how she was overlooked. "For some heroes, normal costume materials just don't work with their quirks. For those heroes, there are support companies that specialize specifically in taking a hero's hair and turning it into the fibers for a costume. That allows them to create costumes that specifically work with a user's quirk. For example, If my sister uses her quirk, any normal clothing would be destroyed, so she has a black bodysuit infused with fabric made from her hair - that way when she activates her quirk, she will always have a bodysuit on afterwards."

"Why didn't I hear about this!" Izuku and the growing crowd saw Toru emoting violently. "I love my hair, but if I could wear a bodysuit that could turn invisible that would totally be worth it!"

"I will admit I didn't know about this either." Momo said. "My quirk requires me to have as much skin as possible exposed for my object creation, but if I had some sort of costume that would let me create objects through it that would be wonderful."

"Well for you that's easy to test." Izuku pointed to Yaoyorozu's hair. "Try creating an object out of the back of your head."

Momo's eyes widened, and then she closed her eyes and concentrated. Suddenly the students saw a Russian nesting doll pop out of her hair and drop to the ground. She looked at it in surprise. "I never thought to try that before!"

"See? So you both could benefit from that."

"Thank you Midoriya!" both of the girls said simultaneously.

"We will have to go talk to Power Loader after class."

"Definitely!"

"Count me in!"

"Kero." The small celebration was disrupted by Tsuyu croaking and looking somewhere. Following her gaze, they saw Minoru gawking at his female classmates. She suddenly shot her tongue out and used it to slap him upside the head, knocking him to the ground.

"Those costumes are amazing! The hero course is the best!" They heard him cry out from the ground.

"Eww! Gross!" Hagakure went over and slapped him. "You should know better!"

After Mineta was dealt with, Momo turned back to Izuku. "I'm surprised you know so much about costumes."

"Yeah well, Emily's parents are both researchers at a support company, so I happened to pick up a few things."

"Who is Emily?" Ochako asked.

"She's one of Himi's friends, one of the recommendation students in class 2-B."

"She may be smart, but what are we getting into if we meet her?" Tsuyu asked.

Izuku just laughed nervously. "She's not that bad? She's just enthusiastic."

"Izuku, after lunch today, I question your definition of enthusiastic." Tsuyu replied.

"I-I guess that's fair." Izuku conceded. "I'm just a novice at support gear compared to her. She has spent years brainstorming ideas for all kinds of quirks, trying to come up with support equipment that would allow quirks to be used in new and interesting ways, even if she doesn't have the ability to create them herself."

"I wouldn't mind meeting her, actually." Momo said. "I'd love to hear what kind of gear she could come up with for my creation quirk."

"I'm sure Izuku can arrange the meeting and you can report back, kero."

Izuku merely sighed and conceded. "I'll let her know. I'm sure she'd love to meet everyone in our class eventually."

Once the remaining members of class 1-A arrived they were all led out to a training ground, where All Might explained the basics of how the battle trial worked, and then began drawing lots for partners.

"Yes! Midoriya, we're partners!" Ochako cheered when they were paired up.

Izuku found her enthusiasm infectious. "Yeah!"

That excitement lasted up until they saw who they were facing.

"Team Midoriya and Uraraka will be the heroes, facing Team Bakugo and Iida as the villains!" All Might announced, holding the two numbered balls in his hand.

"Villains, you have 10 minutes to set up. Heroes, here are the blueprints to the building, you may use the time to begin planning."

Izuku took the plans and began looking them over.

"Are you ok Midoriya? You're shaking."

"Y-yeah." Izuku turned to face Ochako. "I just am worried about taking Bakugo head on."

"He's kind of scary isn't he?"

"Yeah. And I can guarantee he's going to come straight for me." He looked down at the blueprints and began mumbling. "Maybe we can use that to our advantage."

"How so?"

"Bakugo isn't going to care about the bomb. He's only going to have one objective, and that's trying to beat me down. That means Iida will be the only one actually guarding the bomb." He began to point out likely places for them to store the device. "This is actually the opposite of what they should be doing. Iida has the mobility advantage and by being forced to remain on guard duty, that takes away his biggest advantage. If I distract Bakugo, that would give you a chance to go directly for the bomb."

"How are you planning on distracting him?" Ochako asked, concerned.

"By fighting him, obviously!" He tried to give her a nervous smile. "Or at least running around dodging him. I don't know if I can stop him completely though, and the drawback to this plan is that it forces you to take on Iida alone - if I tried to back you up, Bakugo would just follow me and we'd be forced to fight both of them at the same time."

"Will you actually be ok fighting him? Considering how nervous you are already! Wouldn't it make more sense if we both tried taking down Bakugo?"

Izuku clenched his fist and shook his head. "I've seen enough of his fighting style, I know how he works. And I just have to keep him occupied long enough for you to capture the bomb!"

Seeing the determination on his face, Ochako nodded. "If you're ok with that, then we can go with that plan."

"Of course!" Izuku gave her a nervous smile before he lowered the faceplate of his helmet, locking it into place. "Radio check."

Ochako tapped the earpiece she had received. "I can hear you."

The pair approached the front of the building, waiting for the signal.

"Heroes, you may begin!" They heard All Might announce, and the pair walked into the building.

As predicted, it didn't take long for them to hear explosions and Katsuki's angry yelling. "DEKU! GET OUT HERE!"

Izuku turned to his teammate. "Go Uraraka!"

With a determined nod Ochako broke off down a side hallway, racing for the stairs. As Izuku had predicted, Katsuki was completely ignoring her.

Izuku meanwhile, took a deep breath and looked down at his fists. It's different this time. You know what he does, you have been training under Pro Heroes! And you have One For All.

"Kacchan, what's taking you so long?!" Izuku yelled out.

That had the intended effect as he saw Katsuki come flying out of a hallway and landing in front of him.

"Deku. You've always been hiding, letting other people fight your battles. Meanwhile you've always been looking down on me, haven't you? Well now you don't have anybody to shield you from me. DIE!"

Katsuki used his explosions to leap at him, and Izuku watched his movements, getting in position. When Katsuki got close he deftly sidestepped him and grabbed his arm, slamming him into the ground.

"You're too predictable Kacchan. You always open with a right hook."

Izuku powered up his fist and tried to land a disabling blow while he was on the ground, but Katsuki used explosions to push himself away from Izuku, who merely ended up punching the ground.

"Too slow Deku!"

Izuku grimaced. Crap, he must have noticed it takes me a moment to use One For All yesterday, because I don't want to risk overdoing it.

Once he was several feet away Katsuki kicked himself up to standing position, before he used his explosions to race back in. Izuku saw him winding up and prepared to counter him again, only for Bakugo to change his tactics at the last moment. He used his left hand to blast behind Izuku, and used his right hand to hit him with an explosion.

Izuku stumbled forward from the blast. Looks like my costume is keeping me safe from the fire, but he can still shove me around with the force behind the blasts. Izuku looked at Katsuki. Time to see if he realizes that.

Pouring energy into both of his arms, Izuku raced directly at Katsuki, who tried to hit him with an explosion. Using his left arm to absorb the blast, Izuku then swung with his right, landing a solid body blow that sent Katsuki flying.

"I see, you just had to make your costume fireproof because of me huh? If I scare you so much, maybe you should have listened to me and never applied."

Izuku began to feel rage building inside of him. "I used to be scared of you! I used to admire you. But I'm not afraid of you anymore! I am going to beat you and prove who is really stronger!"

"Oh really?" Katsuki laughed and brought up his right bracer, using his left hand to reveal a firing pin and hooking his right thumb into it. "Your suit may be fireproof. Let's test its limits then."

The two of them heard All Might cut in on the radio channel. "I must remind you that you are supposed to limit the force you are using against your opponents!"

"He'll be fine as long as he runs!" Katsuki yelled as he pulled the pin.

Izuku's eyes went wide with realization and he dodged into a side corridor, just in time for a huge blast to fill the corridor.

"I saw you talking with our classmates earlier. You think you're pretty cool huh? Just because you know someone who happens to be good at this sort of stuff? Well these bracers are more than just decoration, they let me store up my sweat. Pretty awesome, aren't they? I guess you're not the only one who knows a thing or two about costume design."

"I never said-"

"You didn't have to say it! I know what you were thinking! You're always thinking you're better than me!" Bakugo bit out. "How long have you been hiding your quirk? How many years were you acting like you were quirkless for pity? Just to laugh at me behind my back!"

Izuku tried his best to ignore the taunts and began running to the stairwell. Hopefully Bakugo's own voice was enough to cover his movements.

Meanwhile All Might once again came back on radio. "Bakugo, it is not wise for a villain to destroy his own base. At this rate you will cause your team to fail if you use your bracers recklessly again."

Once on the second floor Izuku had a few moments of freedom, only for Ochako to suddenly cut in on the radio. "Midoriya! I found the bomb, but there's a problem!"

"What's that?"

"Iida has removed every object from this floor, the only things here are me, him, and the bomb. I don't have a way to get it!"

"Has he seen you yet?"

"No."

"Can you go back-"

"Crap! He saw me!" He heard panic in her voice. "He's now monologuing at me!"

Izuku tried to think of ways to help his teammate, but he didn't have long before he heard Katsuki again.

"Deku! Stop running and accept your beatdown! Or feel free to admit the truth, that you really are worthless, and quit the hero course."

Izuku began trying to find his way to the next stairwell, but made a wrong turn and ran face first into Katsuki, who had a feral grin on his face.

"Fine, if explosions can't put you in your place, I guess I'll do it the old fashioned way!" He rocketed forward with explosions again, this time using the speed to land a solid kick against Izuku's head.

Izuku was thankful for his helmet absorbing the worst of the blow, and he punched Katsuki in the chest. Katsuki wasn't going to let him have the time he needed to use One For All properly, so he was going to have to rely on his own strength and skill.

The two traded blows back and forth until Izuku managed to hook Katsuki's leg and once again knock him to the ground. He took a risk and tried powering up One For All quickly to land a finishing blow, but once again Katsuki was too fast for him. At least when he landed the blow Izuku didn't feel any feedback, which he was thankful for. I guess life or death combat is helping me fine tune my control.

"Crap, Midoriya we don't have much time left! And Iida's keeping me pinned up here!"

Izuku looked at Katsuki, and suddenly had a terrible idea. If I can get him to fire his large blast again…

"Uraraka, be prepared to run to the wall on my signal."

"W-what are you going to do?"

"Make some debris for you." Izuku then walked to the center of the room. "You may be learning Kacchan, but so am I!" He dropped into a fighting stance.

Katsuki scoffed. "You're learning how to give up, all right." He raised both of his gauntlets and hooked his thumbs into the firing pins.

"Are you seriously going to try using that again on me?" Izuku pushed One For All's energy into his legs.

"Of course. You're an idiot if you think I'm going to go easy on you! Let's see if you can take this, DIE!"

Izuku used one leg to leap at the wall and his other leg to kick off of it, using the burst of speed to race towards Bakugo as he watched him pull the pin on his left bracers. Charging up a punch, Izuku ducked at the last second and hit the bracer with an uppercut.

"Ochako, now!" He shouted into the headset.

Izuku watched as Katsuki's arm was pushed upward, causing the explosion to blast vertically through the roof.

And then he heard the second pin hit the ground, and everything exploded.

Ochako barely had time to react when she heard Izuku call out 'now' on the radio, diving to the side of the room before a huge column of flame blasted through the floor in the center of the room. She didn't know how Izuku did it, but as soon as it dissipated she began running, touching as much of the debris as she could find while under the cover provided by the smoke.

When the smoke cleared, she was ready. Iida had, smartly, retreteated to be near the bomb. Hoisting the remains of a pillar, she launched it at him like a javelin, forcing him to dodge.

"Release!" She shouted, initiating the second wave of her attack and causing the debris to fall down on the room, distracting him as he was being pelted by the debris and being forced to avoid the larger chunks. Using the several precious seconds she had bought herself, she used her quirk on herself and kicked off of a pillar, floating over to the bomb and touching it before Iida had a chance to recover.

"H-Heroes win!" They heard All Might announce over the comms, but something in his voice was off.

"Midoriya, we did it!" Ochako cheered, but there was only silence on the other line.

"Midoriya?"

Iida walked over, with a serious look on his face. "Something must have happened downstairs, Bakugo isn't responding either!"

The two raced downstairs, only to see Katsuki standing there, staring at a broken window.

Izuku was nowhere to be found.

"What happened?" Iida asked.

Ochako didn't hear Katsuki's answer as she began to realize what happened, her eyes widening before she raced over to the window and looked outside. There, about twenty meters away, she saw Izuku being loaded onto a stretcher by medical drones.

She spun around as she heard Tenya coming up behind her. "All Might has called us all back to the control room, let's see what he has to say."

Ochako merely crossed her arms and glared. "Fine."

"Ow." When Izuku woke up he felt sore all over, but didn't feel any burns or breaks, which he was thankful for.

"When I told you I didn't want to see you again, I didn't mean just because you've misused One For All!" Recovery Girl scolded him as she entered the room.

"How bad was it?" Izuku felt almost afraid to ask.

"Surprisingly little, given the circumstances." Recovery girl looked at the computer next to his bed. "Your costume kept you safe from any burns, and your helmet protected your head when you hit the ground, but you still suffered several fractures from being blown out of a second story window."

"S-sorry."

Recovery Girl just gave him a look. "Why are you apologizing? You weren't the one who fired the blast."

"I should have seen it coming and avoided it." Izuku stared at the ceiling.

Recovery Girl sighed and shook her head. "What am I going to do with you?"

Izuku didn't have time to respond, however, as Aizawa entered the room. "It seems like there is a history between you and Bakugou. Even after being told not to, he fired his gauntlets a second time, and at point blank range. Fortunately for you, it was only partially full, otherwise it would have been a lot worse."

"I see." Izuku looked down at the bed. "With the number of explosions he was firing off I thought the second bracer was still empty."

"Your plan was a reasonable one, turning your opponent's strength against them. You are lucky your costume was designed to handle explosions." Aizawa folded his arms and looked at him. "Something tells me there's a reason for that."

Izuku swallowed the lump in his throat, refusing to look up. "Y-yeah."

"And that is why I am here. All Might had me review the audio logs."

Izuku winced.

"I'm going to ask this once, and I'm expecting the truth. What is the history between you and Bakugo?"

Izuku sighed and then raised his head to look at Aizawa with determination etched onto his face. "It all started when we were four and my doctor declared me quirkless…"

After the four remaining mock combats, All Might gave each of the students a tablet containing their performance results before dismissing them back to their classroom. There they began reviewing their results, either by themselves or in small groups, until Aizawa came into the classroom.

"Bakugo, come with me." Aizawa announced.

Grumbling, Katsuki stood up and followed Aizawa out of the classroom and down to the teacher's lounge, where he saw a large stack of books sitting on the table.

"What the hell are these?"

"Bakugo, have you ever heard of quirk discrimination, or quirkism for short?"

Katsuki frowned. "No, what is that?"

"It's the belief that someone is superior to someone else due to the quirk they possess - or if they are quirkless."

Katsuki scowled at that, not liking where this was going. "What does that have to do with me?"

"I have heard some disturbing things from Midoriya, and am going to ask you plainly - were you abusive to Izuku Midoriya because you thought he was quirkless?"

Katsuki didn't answer him, but instead turned to leave. "I don't have time for this."

But before he could leave he felt Aizawa's capture weapon around his arms and chest, keeping him in place. "Wrong answer."

"What the hell do you want me to say?!"

"Right now? Nothing." Aizawa indicated the tower of books. "Instead, you have a special assignment. You are to read up on the history of quirk discrimination, as well as the terrorist group known as the Meta-Liberation Army, well known quirk supremecists. You then have until the end of the semester to do two things. First, you need to write an essay explaining to me that you understand all of the flaws with the MLAs philosophy. Second, you need to prove to me that you, personally, are not influenced by quirkism. If you cannot do that, you must instead show me how you are trying to overcome your inherent quirkism."

"And if I don't?"

"Then you will be expelled."

That caused Katsuki to whip around and glare at his teacher. "What the hell!?"

"We have enough bad heroes in society. What was the second lesson I taught you yesterday?"

"It is a hero's job to fight the unfairness in society."

"Good, you were listening." Aizawa grinned. "Now tell me, if a hero personally perpetuates a toxic behavior, are they going to help make society better?"

Katsuki looked down and growled. "No."

"Also correct. There are enough bad heroes out there already. I will not have one of my students join their ranks. You keep claiming you want to be the number one hero. Now tell me, what kind of society would we live in if the number one hero was willing to tell a quirkless kid to take a swan dive off of a building and hope for a quirk next time?"

Katsuki's blood turned to ice. His head shot up and he stared at Aizawa, who only gave him an impassive stare back. "Or, if you would prefer, I can just expel you now, and ensure you are blacklisted from every hero school in the country."

"Why don't you then?"

"That was my original plan. But then Midoriya begged me to give you a chance. He seems to think you will prove me wrong."

Hearing that made Katsuki angry. "You're damned right I will! I'll take your stupid assignment and ace it!"

Aizawa merely gave him a smile that would scare anyone else, but just pissed Katsuki off more. "Good."

After Recovery Girl finally dismissed him and he dropped off the damaged pieces of his costume with Power Loader, Izuku returned to his homeroom. When he opened the door he saw everyone was still reviewing the results from the day, except for one notable absence.

"Where is Bakugo?" Izuku asked.

"Aizawa pulled him away for a private meeting." Iida told him.

Izuku sighed. I guess Aizawa wasn't wasting any time then.

"Umm, Midoriya? This is gonna sound kind of weird but why are you down there?" Denki asked, confusion on his face as he was pointing out the window.

Worried, Izuku rushed over to the window and looked outside. He saw Katsuki walking towards the exit of the school, and, more importantly, he also saw a very angry Himiko, who was currently transformed and waiting at the gate with her arms crossed.

"Oh no."

AN: And class 1-A is introduced to Himiko Midoriya. Now for them to figure out which version of her is scarier…

Despite Bakugo's rough start, there is still hope for him. It's just going to take a while to undo what the last ten years have taught him. Meanwhile, spoilers, this story is going to join the pile of other stories that eventually kicks Mineta to the curb for Shinso.

Also, costume changes! These changes won't be ready until after the sports festival, but here's what changes from their official costumes:

Momo Yaoyorozu - Her leotard becomes a full bodysuit.

Toru Hagakure - She now wears a light blue bodysuit with pink accents, that interacts with her light refraction and becomes invisible when worn, leaving only her gloves and boots visible.

Ochako Uraraka - Adds a second, looser fitting, outer layer to her costume, using the same pink-and-black pattern. After today's incident she also requests this new version of her outfit be flame-resistant.

Katsuki Bakugo - A change to his basic costume design - Grenadier Bracers can be fired one-handed.