*THIS FIC CONTAINS SWEARING BECAUSE BAKUGO BUT ALSO BECAUSE KASUMI + NO FOOD IS A BAD COMBINATION*

So I'd hate to be seen as one of those people who never updates their story after the first chapter, so I'm giving you guys advance warning. At the moment, my main focus is my other story 'Foresight: The Knowing Hero' (Todoroki/OC), but once I've finished the second season in a few weeks, I'll begin updating this story regularly.

I was really excited about this one and I hope you guys are as well! Kasumi and Bakugo's relationship will definitely be a slow-burn (which I hate slow-burns, but in order for it to be genuine it kind of has to be), but still enjoyable in the lead-up! :)

Note: Contains very very minor manga spoilers about Eijiro Kirishima, but nothing life-changing.

Disclaimer: I do not own My Hero Academia, or any of the characters except for my OC, Kasumi.

Summary:

When Kasumi and Eijiro begin their first year at U.A., it's everything they could hope for! And more…

"I heard that twins who have Quirks sometimes form a bond that they can communicate through. Do you guys have that?"

"I wish! We've tried a lot of things to check it. One time, Kasumi rode her bike straight into a wall just to see if I could feel anything..."

Bakugo/OC. Twin!Fic.

Character Profile: Kasumi Kirishima

Appearance: Red eyes, black shoulder-length hair, sharp teeth. Cover picture is Kasumi in a combination of settings (school uniform, hero costume, casual).

Quirk: Density Shifting – She can manipulate her own density and the density of things she touches (if she understands their molecular structure) for short periods of time.

Height: 167cm

Birthday: October 16th

Blood Type: O

Likes: Food, beating her brother at video games.

Red Order: The Shifting Hero

Chapter One: First Day Hype!

The sound of music blasting – hard rock, of course – woke her from her dreamless sleep and she let out a groan of annoyance as the music continued to echo through her eardrums, taking her further and further away from her blessed rest.

Kasumi glared at the wall that she shared with her brother, hoping he could feel the anger of her gaze through it, but no such luck. He did this every day, on purpose. They both knew it. But it never changed.

The music continued to pound through her head before Kasumi gave a shout of frustration and reached through the wall, fumbling around blindly for the volume button. Her brother's only saving grace at that moment was that his music player was always placed on his desk, so that she could easily reach through the wall with her Quirk to change the volume.

Unfortunately, that morning, Kasumi couldn't find the volume button, and her annoyance at the early morning wakeup call was only rising. Her frustration reached its peak and she slammed her hand against Eijiro's desk - manipulating the density until it was barely there - and she heard the crash as all of Eijiro's books and CD's fell to the floor.

The satisfying metallic clunk of his stereo also hitting the floor joined the other noises, before the music abruptly cut out. Thankfully, Eijiro had learned to not place anything too valuable on that desk for Kasumi to break.

"Aww! Come on, 'Sumi! That's the third time this month!" She heard her brother complain loudly through the wall, but she didn't respond, other than a grunt of satisfaction as she withdrew her hand from the wall. Her room was quiet once again.

The silence lasted all of three seconds before her bedroom door opened and Eijiro stood in the doorframe, grinning at her widely. His newly dyed, bright red hair was pushed back with a headband and he stood in his morning workout clothes as he grinned at her. She sent him a fierce scowl in return, from underneath her pile of blankets.

"Fuck off." She grunted and Eijiro's grin somehow grew impossibly wider. However, he knew not to step through the door-frame while she was in this state. He simply withdrew his hand from where it was hiding behind his back, waving it in front of him like an offering.

Kasumi eyed the bag he held and her stomach grumbled audibly, before Eijiro let out a laugh and threw the bag at her. She snagged the bag out of the air, pushing her tangled hair out of her face and tore it open instantly, to find exactly what she'd hoped. Their father had gone to the bakery this morning before he left for work and brought back some buns for Kasumi.

He and her mother had probably had some as well before they both left for the day, but Eijiro wouldn't have. Since he'd made the decision to go to U.A. all those months ago, he'd been on a strict, high-protein diet, so bakery rolls were out of the question for him.

Kasumi had tried to follow him with his diet, since she was also going to U.A., however, it was difficult, since she spent a high portion of her day snacking. But during lunch and dinner, she was always right there next to him, with their muscle-building meals.

Eijiro returned to his room, probably to continue his work out as Kasumi demolished the food. With every bite, she felt her energy return and her mood brighten. By the time she was finished, she crumpled the bag with a grin, throwing it into her trashcan across the room, before leaping out of bed.

Today was their first day at high school, she was ready for it!

It only took her an extra two minutes before she was bouncing into her brother's room with a grin and he looked up at her from his punching bag. He'd apparently decided to leave the music off for the morning, since she'd been so unhappy with it, and Kasumi felt a twinge of guilt as she walked over to his desk, reaching under it to return his stereo to its spot. After the first handful of broken music players, Kasumi had bought Eijiro a supposedly 'All Might Proof' stereo for their birthday and it had yet to stop working, despite being a casualty of Kasumi's morning anger.

The other things that had been on his desk were still laying under it in a heap and she made a note to put it all back that night.

"You ready?" She asked him with a grin which Eijiro returned.

"Yeah! Let's go!"

School didn't start for almost two hours, however, the Kirishima twins had a routine that was rarely broken.

It worked for them, and the beginning of high school was no different as the they exited the house, before they began their jog to the park down the road.

It was something they'd developed over the last year since they began training for U.A. Eijiro would wake up first before beginning his workout. When Kasumi woke up, she'd eat before they'd go for a run. Eijiro would take a shower, Kasumi would continue her exercises before showering and eventually they'd be off for the day. The only change in the last few weeks was that now Eijiro spent an extra few minutes in the bathroom styling his hair, something that amused Kasumi.

When they returned from their run half an hour later, her brother left to take a shower while Kasumi returned to her room, retrieving her weights from the lounge room.

If the two of them were quick, she'd have time to eat something else before they had to leave to catch the train, she thought to herself. Once Eijiro left the bathroom, Kasumi knew he would be in the kitchen straight away, chowing down since he hadn't eaten before they'd left for their run.

Their parents worked a lot, but they always made sure that Kasumi and Eijiro had food for the day, often setting aside breakfast before they left for work. Eijiro was the only one who saw them in the mornings, since he woke up earlier and their parents had learned to let Eijiro deal with Kasumi at those hours, since she was an unpleasant person until she ate something.

Later that morning, once she was out of the shower, Kasumi stared into the bathroom mirror, observing her appearance. Her shoulder length hair was still wet and lay limply against her neck, where normally, it stood out slightly more, forming spikes around her shoulders that gave it a chunky appearance. She pouted at the dark black of her hair for a moment, mildly disappointed that she was now the only twin with it.

During school, people had always said that the Kirishima's looked scary alike. With their pitch black hair, bright red eyes, and wicked sharp grins, they were a force to be reckoned with.

Kasumi had finer, more feminine features than her brother, but it was clear as day that the two of them were related and that worked just fine for them. They loved that nobody ever doubted their relationship.

She didn't hold it against her brother, his decision to dye and start styling his hair, but it was still different. It had only been a couple of weeks, so she was growing used to the change, along with his change in personality. Over the last few months, he'd grown more outwardly confident. She felt he'd always had that aspect around him, that charisma, but it seemed he was beginning to embrace it in a new way and she was more than happy for him.

It also helped that Eijiro had gotten all teary-eyed when she'd pointed out to him that now that his hair was different, people may question whether they were siblings. She'd grinned at him and told him it was fine, it was a joke, nobody could every doubt it when they'd both inherited their sharp teeth from their father, but it made her feel better that it meant a lot to him as well.

After Kasumi left the bathroom, it didn't take long for the two of them to leave the house and she felt her excitement bloom again as she thought about their destination.

U.A. High School. They were going to U.A. High School!

She elbowed her brother next to her to get his attention and grinned at him.

"Ei! Ei! Can you believe it! We're going to U.A.! How cool is this!"

Eijiro grinned at her in return and she could see his eyes light up as he thought about it as well.

"I know! Man, 'Sumi, we've spent so long training to get there! I can't believe it! And I was second on the entrance exam!" Eijiro burst out and Kasumi laughed.

"Yeah, aren't you Mister Overachiever!" She teased him, lightly punching his arm and Eijiro puffed out his chest in pride.

When they'd taken the entrance exam not long ago, Eijiro had been ecstatic to find out that not only had he been accepted to U.A., but he'd received the second highest score on the entrance exam. He'd cried very manly tears, but Kasumi had been right there beside him, just as happy with the results.

She hadn't done as well as her brother as she still had a few issues with her Quirk, but she'd been pleased with her own results. She'd just scraped into the top ten, which was more than enough for her to boast about and for their parents to be over the moon. The only thing that had made her happier since then was when they found out that they were still in the same class.

"I wonder what our classmates will be like?" Kasumi pondered as she bounced on the balls of her feet while they waited for their train. Eijiro was glancing around them and Kasumi could tell his nerves were beginning to get to him, it was a big day after all.

"They've probably all got really awesome Quirks… we're going to have a hard time standing out against all of them." Eijiro responded with a tinge of worry in his voice and Kasumi snorted.

"No way! We're the Kirishima's, Ei! And our Quirks are awesome! You didn't get second for no reason." She said, slinging an arm around her brother's shoulders like an affectionate older sibling as they entered the train. Despite the fact that Eijiro had grown taller than Kasumi a few years back, it was something she still did, and Eijiro had yet to force her to stop doing it.

"Yeah, I guess." He mumbled in response looking down at his shoes and Kasumi's grip around him tightened until he shook himself out of it. "We're going to be the manliest hero duo ever!" He announced, pumping his fist in the air with a grin and they both ignored the annoyed looks from people around them.

"You're going to be manly, I'm just going to be awesome." Kasumi retorted and Eijiro's smile didn't waver.

"Girls can still be manly! You're more manly than half the boys in our middle school." Eijiro reasoned and Kasumi snorted again.

"Only half?"

"Hey, hey! Stop nit-picking my words!" Eijiro complained and Kasumi grinned at him unapologetically.

They spent the rest of the trip there discussing all the aspects of their day. What kind of Quirks would their classmates have? What about the teachers? Would they get to do anything cool today? When would they see their hero costumes?

The Kirishima twins were all but bursting with energy when they finally arrived at the classroom and Kasumi saw Eijiro hesitate for just a moment outside the door, anxious of what to expect.

Here they were, Class 1-A.

Kasumi wasn't sure what lay beyond the door and she could also feel her nerves rising, but she didn't let it affect her. She summoned her biggest grin, before winking at her brother and throwing the door open.

Kasumi strode into the room and immediately spotted a familiar pink face standing near the front of the classroom, talking to a few other classmates.

Most of the room turned to look at the newcomers and Kasumi felt her brother come up to stand next to her, also grinning at the class.

"Wow! This is so cool! Hey guys!" He announced, waving at the group and someone squealed, before throwing themselves at Kasumi.

"Kasumi-chan! Kirishima-kun! We're in the same class!" Mina Ashido gushed excitedly and Kasumi grinned at her.

"Hey, Mina-chan! This is so cool, right!?" Kasumi enthused and Mina nodded her head rapidly in agreement.

Mina had gone to middle school with Kasumi and Eijiro, however, they'd never been in the same class as her so they didn't know her too well. Kasumi was mainly familiar with the pink girl from all the times they'd battle each other for first place in sports and athletics competitions throughout school. However, Kasumi was excited about the opportunity to get to know her better.

"Ashido-san, you know these two already?" A voice asked and Kasumi turned to see a girl with wide green eyes and matching green hair. She was watching them interact curiously, but strangely, didn't seem that shy about the first day.

"Hi!" Kasumi waved at the girl with a bright smile and noticed another boy with dark hair standing behind her watching them. "I'm Kirishima Kasumi!"

"Asui Tsuyu, call me Tsuyu-chan, please." The girl responded and the boy with dark hair grinned at Kasumi.

"Sero Hanta."

"Nice to meet you! Hey, is your Quirk to do with your elbows?" Kasumi asked curiously and Sero nodded, looking bashful.

"Yeah. I can shoot tape from my elbows." He told them and both Kasumi and Mina grinned at him.

"Wow! That's so cool!"

"That's really helpful for a hero!"

"Thank you." He replied, his face still had a wide grin on it, but before Kasumi could ask any more questions, her brother called out to her.

"Hey 'Sumi! Come quick! You need to get the seat behind me!" Eijiro was waving his hand in the air as he grinned at his sister and Kasumi noticed a boy with blond hair standing next him. The boy had a black lightning bolt in his hair and she wondered if it was natural as she made her way over to them.

"You finally learned to stop asking me to sit in front of you, huh?" She teased him with a grin and Eijiro's cheeks tinged pink.

During elementary school, Kasumi had sat in front of Eijiro and she remembered when he got them both a week's detention for copying off her work. Their parents had been furious, as had Kasumi, who hadn't realised her brother had been copying off her. Unfortunately, none of the teachers believed for a second that they hadn't both orchestrated the scheme.

"Yeah, yeah, just sit down before someone takes it!" He complained and she laughed as she grabbed the seat behind him. She wasn't sure if the class actually had a seating plan, but that was fine if that was the case anyway. Her and Eijiro always ended up next to each other if it was done by names.

Once Kasumi had placed her bag on the chair, she turned to the boy Eijiro was standing next to and grinned at him.

"Hi! I'm Kirishima Kasumi!"

"Kaminari Denki!" He responded with a grin and Kasumi immediately asked him what his Quirk was. "Electricity," he explained, holding his hand up and Kasumi saw the sparks surrounding his hand. "I can produce an electric charge and zap people."

"Wow! That's really cool!" Kasumi enthused and Eijiro grinned as well. "So, you basically become a living stun gun?" She asked and his cheeks turned pink.

"Yeah." He nodded before his eyes brightened with curiosity. "Hey, what are your Quirks? Do you have the same one?"

Kasumi shook her head and Eijiro pouted for just a moment before his wide smile returned and he held out his arm. "Nah, different Quirks! Mine's hardening," he explained, demonstrating with his arm. "I can make my whole body go really hard."

"And mine's density shifting." Kasumi said, holding up her hand and manipulating it until it grew hard like Eijiro's did, before she changed the density to very low and passed her hand through the table in front of her. "I can make myself hard and I can also make myself permeable. Along with some things I touch-"

"She got the good one." Eijiro all but grumbled, a pout on his face and Kasumi frowned at him.

"No, I didn't. You got the good one! I can only hold mine for a few seconds at a time, and it's too draining to do my entire body. You can keep yours going for much longer, and with your full body." Kasumi's voice was close to a whine as she finished and Kaminari watched them, looking confused.

"Wow! You both have really strong Quirks! That's so cool!" He said, breaking the staring contest between the two siblings. Kasumi turned to him before her face slowly formed a grin and she exchanged a look with Eijiro. Yeah, maybe it wasn't too bad.

"Thanks, Kaminari-kun!"

"I heard that twins who have Quirks sometimes form a bond that they can communicate through. Do you guys have that?" A voice asked and Kasumi turned to the side to see another girl sitting at a desk and eyeing her and Eijiro curiously as she played with her earlobe. An earlobe – Kasumi noticed – that was long and ended in an earphone jack. Kasumi wasn't sure what it did but she already knew it was another cool Quirk.

"I wish!" Kasumi and Eijiro replied in unison, before Eijiro continued. "We've tried a lot of things to check it. One time, Kasumi rode her bike into a wall just to see if I could feel anything, but all we've got is a vague feeling about whether the other is alright."

Kaminari and the girl with the earlobes exchanged perplexed looks at the story, along with Sero and Tsuyu, who had followed Kasumi when she'd gone to sit down. Kasumi merely shrugged, unfazed. It had felt like it was a good idea at the time, although their parents hadn't thought that was the case.

"A lot of the research says it sometimes needs a significant event to trigger it so maybe one day!" Kasumi informed them before her and her brother grinned and exchanged a fist bump. "Hey, what's your name?" Kasumi asked, turning her attention to the unknown girl.

"Jiro Kyoka."

"Nice to meet you, Jiro-san!"

The group of them only spent a few more minutes talking before they settled into their seats. Kasumi was beginning to feel anxious about the day, since she had no idea what to expect. Would they just be sitting through normal boring classes? Would there be an orientation? She had no idea but she was hopeful it would be something exciting.

A commotion to the other side of the room drew her attention and Kassmi looked up in interest to see a tall boy with glasses berating a blond guy who had his feet on the desk and a sneer on his face.

"Don't put your feet on the desk!" The bespectacled boy scolded the other and the blond one raised his head slightly to look at him, a smirk on his face.

"Huh?" He questioned, eyeing him and his smirk grew as the tall boy grew more irate.

"Don't you think that's rude to the U.A. upperclassmen and the people who made the desk?" Kasumi resisted the urge to laugh, her interest rising as she watched the interaction. She was pretty sure the U.A. upperclassmen weren't concerned about the matter, so why was this guy so invested? She personally wouldn't really care unless the guy had gross shoes, but from what she could see, the boy's shoes were shiny white. She exchanged a look with Eijiro, who was also turned in his seat, watching the exchange curiously.

"I don't! What junior high did you go to, you side character?!" The blond guy taunted and Kasumi's gaze turned thoughtful as she eyed him. He seemed like an asshole, that was for sure. She thought it was a pity that he was attractive. What a waste of a good face.

"I attended Somei Private Academy." The other guy continued, seeming personally affronted by the retort. "My name is Iida Tenya."

"Somei?! So you're a damn elite, huh? Looks like I'll have fun crushing you!" The blond boy jeered and Kasumi shared another look with her brother. His expression clearly read 'it's the first day Kasumi, don't start causing trouble' but she liked to pretend she only had a selective understanding of her brother's expressions as she eyed the blond boy. However, she understood the almost pleading edge to Eijiro's eyes and she backed down, turning away from the scene in annoyance as her brother settled back into his seat properly. He was probably right, it was the first day and she didn't know the guy yet.

Kasumi reached into her bag, pulling out a box of pocky to nibble on and Eijiro, hearing the rustle, didn't even turn to look, merely held out his hand for her to fill. She grinned, opening the box and placing a few of the sticks in her brother's hand, then watched as he immediately shoved the entire handful in his mouth. The people around them eyed them curiously, however nobody said anything as their attention had turned to where the tall boy, Iida, was now marching at a new student who'd walked in, looking like this was the last place he wanted to be.

Kasumi zoned out of the conversations around her, staring into the distance as she nibbled on her food. Her classmates seemed nice, which was exciting. However, it seemed there were a few people she wasn't so sure about. The blond guy seemed like he might be a piece of work, although she tried to tell herself that she didn't know him yet. And the tall guy was definitely a stickler for rules. But she was sure she'd get to know them all eventually, even the boy with bird features to her left, who was ignoring everything around him. She and her brother had made it a goal to make friends with everyone in the class.

Eventually, a new voice piqued her interest and Kasumi put her snacks in her bag as she glanced up. There was a voice speaking just outside the door and based on how the people in the front were looking, she assumed he was a sight to see.

When he stepped further into the room, Kasumi could see why. With scruffy hair, stubble and a worn-out expression, he looked like he lived on the streets. And that impression wasn't helped by the fact that he was dragging a yellow sleeping bag with him. For a moment, she considered whether the man was actually homeless, but that didn't explain why he was in the school.

"I'm your homeroom teacher, Aizawa Shouta. Nice to meet you." He announced to the room in a tired voice and Kasumi blanched, mouth falling open in surprise. Homeroom teacher? The man seemed oblivious to the shocked students, or perhaps he didn't care, but he began rummaging in his sleeping bag, before he held out a blue sports uniform to the room. "It's kind of sudden, but put this on and go out onto the field."

They were doing something outside? Physical activity? Maybe they'd get to use their Quirks! Kasumi stood up instantly with a grin. "Let's do this!" She announced cheerfully, and she saw Mina also standing up, looking excited. This was their time to shine.

Her new homeroom teacher – Aizawa - gave them directions to the locker rooms, where they could find their sports uniforms and Kasumi took off, alongside Mina, giving her brother a short wave and a grin as she left the room.

She and Mina didn't take long to get changed, however, they stayed in the locker room, introducing themselves to their fellow female classmates. There were only seven girls in the classroom, in comparison to the thirteen boys, and Kasumi was excited to get to know her female comrades.

"Hi!" She greeted a girl with brown hair, rosy cheeks and big eyes who was examining her uniform in the mirror. "I'm Kirishima Kasumi, what's your name?"

"Uraraka Ochaco." The girl replied with a smile, looking excited. "Nice to meet you. Look at these uniforms! They feel so light!" She said enthusiastically and Kasumi grinned.

"I'm Hagakure Toru!" Another voice said and Kasumi turned, only to be greeted with nothing. However, she noticed a uniform hovering in mid-air that appeared to be half on.

"Wow, you're invisible! That's so cool!" Mina exclaimed and the girls quickly all introduced themselves. Kasumi learned that the girl she hadn't met yet's name was Momo Yaoyorozu and she seemed more sophisticated than the rest of them, but still friendly.

When the girls left the changerooms, they found most of the boys were already there, and Kasumi saw her brothers red hair standing next to Sero, both of them looked nervous as she walked over to stand just in front of them, alongside Mina. Kasumi wasn't sure what would happen today, she was also starting to feel slightly nervous.

She stood in silence with the rest of her classmates, waiting for the final stragglers to arrive before Aizawa finally began speaking, looking bored as he surveyed them.

"Before we start anything else today, you'll all be doing a Quirk assessment test."

"A Quirk assessment test?!" The class exclaimed in unison and Kasumi found herself torn between excitement and fear. She could see those around her were also surprised as she gaped at her homeroom teacher.

"What about the entrance ceremony? The orientation?" Uraraka asked him nervously.

"If you're going to become a hero, you don't have time for such leisurely events." Aizawa explained in a tired sounding voice. "U.A.'s selling point is how unrestricted its school traditions are. That's also how the teachers run their classes."

So, he was saying U.A. basically ran their classes however the particular teacher wanted to? Huh, Kasumi thought.

"You kids have been doing these since junior high, too, right?" He asked, before holding up a device, showing a list of exercises. Kasumi recognised them from school. "Physical fitness tests where you weren't allowed to use your Quirks. The country still uses averages taken from results from students not using their Quirks. It's not rational. Well, the Ministry of Education is procrastinating."

Kasumi felt confused about where this was going, however, she had a sneaking suspicion and she grew more excited as she waited for their teacher to get to the point.

"Bakugo, you finished at the top of the practical exam, right?" Aizawa asked and Kasumi noticed he was talking to the blond boy who'd been rude in the classroom earlier. The entire class turned to look at him, including Kasumi.

So, this was Katsuki Bakugo. Kasumi recognised his name from the list released to the students. He'd somehow managed to get 77 villains points and Kasumi remembered hearing several students complain after the entrance exam about a blond guy with a powerful explosion-like Quirk in their testing centre who took all the points. She'd been glad that he wasn't in the same area as her or Eijiro. But here he was, in her class. She eyed him with a newfound curiosity.

"In junior high, what was your best result for the softball throw?" Aizawa asked him and Bakugo thought about it for a moment.

"67 metres." He answered. 67, huh? It was a pretty good result for a guy their age, but it wasn't anything crazy.

"Then, try doing it with your Quirk." Aizawa said to him, before tossing him a ball, which Bakugo caught in surprise.

Bakugo walked up to the circle, apparently unfazed by the class's attention as Aizawa continued to instruct him.

"You can do whatever you want as long as you stay in the circle. Hurry up. Give it all you have got." He told him simply and Bakugo stretched, a small smirk forming on his face as he warmed up his arms.

Kasumi's anticipation rose further and she tried to keep it down as she watched. Were they really allowed to use their Quirks in this?

Her question was answered when Bakugo threw the ball. A 'boom' echoed through the air as the ball exploded across the field and she heard Bakugo shout out "Die!" as he threw it.

Kasumi had a moment to wonder incredulously why he'd shouted out 'Die!' of all things, but her eyes trailed the ball as it flew across the field, way into the distance.

"Know your own maximum first." Aizawa droned to the class as they watched the ball descend towards the ground slowly. When it finally disappeared from view, the device he was holding beeped and he held it up to show the class. "This is the most rational way to form the foundation of a hero."

Kasumi gaped at the device and she heard the rest of the class also gasp in shock. 705.2 meters!

"705 meters, for real?" Kaminari asked.

"What's this? It looks fun!" Mina said from Kasumi's side and Kasumi reached her arm backwards, slapping her brother repeatedly on the arm as she grinned in excitement. When she looked at him, she saw he was wearing a matching expression.

"We can use our Quirks as much as we want! As expected from the hero course!" Sero exclaimed from beside Eijiro.

"'It looks fun', huh?" Aizawa spoke slowly, a strange expression on his face and Kasumi felt her smile dim slightly as she slowly lowered her arm. She had a bad feeling. "You have three years to become a hero. Will you have an attitude like that the whole time?"

Kasumi's smile had completely disappeared at this point as she watched her teacher.

"Alright. Whoever comes in last place in all eight tests will be judged to have no potential… and will be punished with expulsion."

"Huh?!" The class shrieked and Kasumi had a horrifying thought of her or her brother being expelled. Surely not. It seemed crazy! She glanced at her brother and saw he had a similar expression of shock on his face as he looked at her.

"We're free to do what we want about the circumstances of our students. Welcome to U.A.'s hero course!" Aizawa announced with a grin and Kasumi blanched.

It didn't seem like a very nice welcome.

After he had finished his explanation, Aizawa walked the class over towards the running track, telling them they'd be doing a 50-meter sprint as the first test.

It wasn't until after she'd watched two sets of her classmates run that Kasumi realised she was going to be alright. There were a lot of students with Quirks that helped them for this. One boy propelled himself with a navel laser and Iida blasted down the track in a matter of seconds using the engines that were apparently a part of his legs, but there were also students that had Quirks which weren't so helpful.

Kasumi and her brother may not have been able to use their Quirks well in these fitness tests, but they were extremely fit naturally, so she knew they'd be fine. In fact, Kasumi began to grow excited, hoping that she could even do well in the tests.

She spotted her brother watching the next pair prepare to run and she walked over to him, giving him a grin.

"Hey, Ei!" Eijiro glanced at her and he seemed surprised to see her in such a cheery mood, considering the scenario. He was still eyeing their classmates nervously, but seeing Kasumi seem so confident eased his worries slightly.

"'Sumi, I didn't expect this." He said quietly, eyeing their classmates. "What if one of us gets kicked out!"

"There's no way." She told him firmly and her grin didn't falter as she swung an arm around his shoulders. "C'mon, think about it, Ei! You got second on the entrance exam! You think a little thing like this is going to stop us?"

Eijiro looked doubtful for a moment, before he looked at her and seemed to absorb her words. He knew he was fit, and they'd spent a long time training for this. He couldn't fall over at the first hurdle. "You're right. We've got this." He said and a grin slowly formed on his face again.

"Yeah we do!" She exclaimed, holding up her hand for a fist bump and Eijiro's grin brightened further as he met it with his own.

"Kirishima." Aizawa called for the next runner and Kasumi and Eijiro both looked up, before they raised their hands with matching grins.

"Here!" They announced in unison and Aizawa looked up from his device. He stared at them evenly for a moment, but Kasumi's grin didn't falter. She felt Eijiro tense up slightly beside her but he also stayed firm before Aizawa eventually looked down at his device again.

"I hate twins." He grumbled and Kasumi turned to her brother, wide-eyed before she let out a laugh. The rest of the class was watching the scene curiously, some of them were eyeing Kasumi and Eijiro, obviously only just noticing them, and Kasumi saw Sero and Kaminari both watching with amused expressions.

She liked them already.

"Alright. Both of you are up next. Try not to hold hands as you run or whatever." Aizawa sighed, sounding tired and Kasumi smirked at him before she and Eijiro approached the start line. The two grinned at each other as they prepared to run.

Both Kasumi and Eijiro knew that neither of them could use their Quirks very usefully in this test, but that was fine, they'd still get through without being expelled. As they took their places to begin, Kasumi predicted what would happen. Eijiro would just beat her, but barely.

Sure enough, once the gun went off, the two of them took off, sprinting their hardest and when they reached the end, Eijiro was a meter in front of her. It didn't surprise her and Eijiro grinned at her happily as they heard their times.

5.83 seconds and 6.07 seconds. Not bad, but around the same as their middle school times. Kasumi knew that Mina had been faster than both of them but it didn't bother her, everyone had their strengths. Including Kasumi and Eijiro.

Now that she thought about it, she already knew that Eijiro would beat her in the overall score, but not by much likely. He may have been faster than her - and also stronger - but Kasumi was more flexible, agile, and slightly fitter. Even though, they'd probably run the long distance run together to pace each other, if it came down to it, Kasumi could continue to run for longer. So, she knew that she'd likely beat her brother in the side steps, sit ups and toe touch, while Eijiro would beat her at the grip strength, standing long jump and ball throw, and they'd probably more or less tie for the long-distance run.

Sure enough, as the events drew on, it seemed that way. Kasumi was glad to find she was in the top half of the class in general in terms of performance. As they made their way around the field, she tried to introduce herself to more of her classmates.

When they were told to pair off for the sit ups, Kasumi was working with Hagakure and as they switched she looked across the gym to where Mina stood, partnered with Yaoyorozu.

"Hey Mina-chan!" She called out to her with a grin and Mina looked up with a curious expression. "How many did you get?"

"88!" Mina exclaimed, pumping her fist in the air. "My new personal best!"

Kasumi's eyes lit up at the announcement. Challenge accepted.

"Come on, Hagakure-san! I have to beat her." Kasumi enthused to Hagakure as she lay down on the mat and even though she couldn't see Hagakure's expression, Kasumi could tell she was excited.

"Ooh! A challenge! Come on, Kirishima-san! You can do it!"

Two minutes later, Kasumi had a wide grin on her face as she called across the gym to Mina. "102, Mina-chan!" She saw Mina pout back at her.

When it came to the toe touch test, Kasumi's immovable grin managed to widen further as she stretched her arms above her head and surveyed her opponent – the wooden measuring device they were using to assess their flexibility.

She had this one in the bag.

The class was split between using four measuring tools, so Kasumi was standing in a circle around the device with her brother, Mina, Sero and Kaminari. When Kaminari posed the question of who was going first, Kasumi easily stepped forward.

"This is a piece of cake!" She told them with a grin as she sat down, and without further adieu, practically folded her body in half, her arms stretching far past her toes.

"Wow!"

"What?!"

"Kasumi-chan! That's crazy! How are you doing that?"

"Show off." Eijiro grumbled and Kasumi grinned at her brother.

"I do yoga every day." She explained easily as Sero bent down to take the measurement. She left out the fact that she initially started doing yoga because it was 'recommended' by her doctor as an anger management tactic. That was before they realised that food was the key to keeping Kasumi happy, but she found she enjoyed it, so the yoga routine stayed.

A few of her other classmates were glancing their way, watching her and she heard Tsuyu's voice pop up.

"Kirishima-san, your body is inside itself." She noted, watching her and Kasumi's grin widened even further.

"Yeah! My Quirk means that I can stretch even further, without my body parts getting in the way!"

Kasumi had found that her flexibility was only limited by folding her body against itself, so she'd manipulated the density of her torso, allowing herself to fold over even further. Even though it was a small section of her body, she couldn't hold the density shift for long, so the moment Sero was done measuring she pulled back up, stretching as she stood.

"All done!" She announced with a grin and Kaminari was staring at her like he'd discovered a new lifeform.

The others quickly continued the tests, with Eijiro only being beat out for flexibility by the girls and a boy with a large tail that Kasumi was pretty sure was named Ojiro. Kasumi often convinced her brother into doing yoga with her, so he was fairly flexible for a guy.

The final test was the long-distance run, which Kasumi and Eijiro came fifth and sixth in. The only people who beat them were Bakugo, Yaoyorozu (who the Kirishima's had gaped at when she overtook them on a motorized scooter), Todoroki (a boy with an ice Quirk who used it to propel himself around the track) and Iida, who used the engines in his leg to move faster than the rest of them around the field.

Kasumi had almost beaten Bakugo, which she was quite proud of. He'd apparently decided to run the race without his Quirk, until Kasumi had tried to catch up to him in the final lap and he snarled at her before taking off in a rush of explosions. She watched him go and was torn between curiosity and annoyance. What was his deal? Was he just competitive or was he a really rude person? She was interested to know.

By the time the tests finished, Kasumi was worn out and beginning to feel the niggling effects of hunger as she moved to huddle with the class in front of Aizawa. She hoped they could go back to the classroom soon so she could eat something. Eijiro was looking more confident than he had before they started as he waited for the results to be announced.

She caught the eye of Todoroki, the guy with the ice Quirk and grinned at him. She hadn't spoken to him today as the boy with the dual-toned red and white hair had kept mostly to himself. He ignored her though, merely turning back to look at the front, but Kasumi didn't let it bother her.

"Okay, I'll quickly tell you the results. The total is simply the marks you got from each test. It's a waste of time to explain verbally, so I'll just show you the results all at once." Aizawa informed them, before he pressed a button on his device and a screen popped up, presenting their places.

Kasumi grinned when she found her name in ninth place, between Eijiro and Mina. She waved at Mina, before sending a thumbs up to her brother. Job well done.

She checked the bottom of the list, her mood dampening when she realised one of her classmates would be getting expelled.

Izuku Midoriya.

She'd only shared a brief conversation with him while they waited their turns at the standing long jump, and he hadn't spoken much, obviously nervous about the tests. And for good reason, apparently.

There'd been a big commotion when he'd done the ball throw where Aizawa had gotten involved and Bakugo had gotten angry, trying to attack Midoriya. She wasn't really sure what had happened and what spurred either of those people to interfere. It had been strange to say the least and it certainly hadn't helped her impression of Bakugo.

She could see Midoriya staring at the board, looking devastated before he lowered his head and Kasumi considered comforting him.

"By the way, I was lying about the expulsion." Aizawa announced, and the entire class stared at him in shock.

What?

"It was a rational deception to draw out the upper limits of your Quirks." He explained with a grin and Kasumi could only gape at him, open mouthed.

"What?!" Half the class shrieked.

"Of course that was a lie. It should have been obvious if you just thought it through." Yaoyorozu spoke up from behind Kasumi. She seemed perfectly calm and if you had really looked into it, perhaps she was right.

Kasumi definitely hadn't noticed. "He lied to us." She whispered in shock. There was a voice in the back of her head telling her to never trust this guy.

"With that, we're done here." Aizawa told the class, he began walking away, continuing to speak over his shoulder. "There are handouts with the curriculum and such in the classroom so when you get back, look over them."

Kasumi stared after him for a moment in shock, before her stomach rumbled slightly and she decided she definitely needed to go get food.

"Let's go guys!" She called out with a grin and her classmates looked at her, before walking back towards the classroom.

Once she had changed back into her school uniform, Kasumi made her way to the cafeteria, quickly grabbing some food before she searched the room for her brother. One of the benefits of him dyeing his hair was that she could find him in a crowd easier and she quickly found him, making her way over to him.

Eijiro was sitting at a table with Kaminari and she made her way over, plopping down beside Kaminari with a rushed greeting before she tore into her food. Eijiro ignored the scene, used to it but Kaminari watched her in surprise for a moment.

"Kirishima-san, you can really eat." She heard a voice say and turned to see Sero also sitting down next to them. Mina was making her way over to the table as well and she smiled at her.

"I'm hungry." Kasumi responded simply through a mouthful of rice and Eijiro laughed.

"Yeah, Kasumi's a machine when it comes to food. You don't want to meet her when she's hungry." He explained and Mina gasped as she arrived at the table.

"So, it's true! I heard a rumour about that in seventh grade but I didn't believe it." She stared at Kasumi in awe for a moment but Kasumi ignored her as she shoved down another large bite. Before anyone could ask for clarification though, Eijiro called out across the cafeteria.

"Hey, Bakugo-kun! Come sit with us!" He waved across the room to the spikey-haired blond who scowled at him, looking like he was going to ignore him, before he eventually made his way over.

"Hey Bakugo!" Sero greeted him with a grin as Bakugo slammed his tray down, hunching in his seat. Kasumi had a feeling the only reason he was sitting with them was because it was the easiest option. "So, what-"

"I don't care." Bakugo told him with a small sneer before his attention turned to his food.

"Wow man! Just trying to make conversation." Sero responded with a light-hearted grin, obviously not that bothered by it. Kasumi stared at Bakugo for a few moments and he glared at her.

"What do you want, extra?" He growled and a wide grin slowly spread over her face as she looked at him. She saw her brother eyeing her warily from across the table.

"I was just wondering about the Quirk apprehension test, Bakugo-kun. First day and you've already slipped from first on the entrance exam, to third in the class. How does that feel?"

Eijiro was sending her a desperate 'abort mission!' look, but Kasumi ignored him. She just wanted to rile him up and see how he reacted. Bakugo didn't disappoint.

"I don't need to beat them at some shitty school test! I'll kill you all in training!" He all but shouted, a wild, furious expression on his face and Kasumi watched him in amusement.

"If you say so, Bakugo-kun." She said with a fake, drawn out sigh and Bakugo glared at her for a moment. Kaminari, Sero and Mina were staring at the exchange with wide eyes, before Bakugo stood up with a scowl, hurling a 'fuck you, extra! I don't need to listen to shitty you!' behind him as he decided to leave the table, taking his food with him.

"My name's Kirishima Kasumi, not extra!" Kasumi called after him with a wicked grin, clearly amused.

There was silence for a moment, before Sero finally broke it, a perplexed expression on his face.

"Y'know Kirishima-san, you come off a little crazy sometimes."

"She's fine. She's just testing him." Eijiro sighed, looking disappointed as he watched Bakugo's retreating form. He continued talking to Kasumi in a quieter voice. "Did you have to, 'Sumi? I thought we were going to get to know everyone. Or have you already decided about him?"

Kasumi shrugged, taking another bite of her food as she thought about it. "Jury's still out." She told her brother.

She didn't know what to think. He definitely seemed like a mean guy, but she'd promised her brother she'd make an effort in getting to know everyone. Also, Eijiro seemed curious about him and Kasumi generally trusted her judgement.

Maybe she'd make an effort tomorrow, but she definitely couldn't promise her brother that she wouldn't tease him.

"He seems really easy to rile up though!" She said in a slightly whiney voice and Kaminari smirked from across the table.

"She's right. That did look fun, even if Bakugo-kun is scary." He had an almost contemplative look on his face as he thought about it, before Mina shifted the topic to hero outfits.

Their afternoon was spent going over the years curriculum, along with a bunch of other formalities that Kasumi had expected to occur in the morning. Pretty boring stuff, she thought, but the fact that it was at U.A. made it much more bearable for her.

When school finished for the day, Kasumi and Eijiro headed home together, discussing enthusiastically the day they'd had.

They continued discussing their classmates and their Quirks until they arrived home and Kasumi immediately made a beeline for the kitchen, grabbing an apple out of the fruit bowl on the bench and immediately taking a large bite.

She made her way to her room, watching her brother return from his own after throwing his school bag in there.

"Hey, you wanna play Mario Kart?" Kasumi asked through her apple as she threw her bag into her own room. It bounced on her bed, before settling and she returned to the living room where Eijiro was collapsed sideways across the couch.

"Yeah!" He responded enthusiastically, before eyeing her warily. "What are the stakes?"

Kasumi paused as she took another bite out of her apple, thinking it over. Her eyes drifted to the kitchen and she grinned. "Loser does the dishes, winner gets the leftovers from dinner."

Eijiro leapt up from his reclined position, reaching for the TV remote with a grin. "Hell yeah! I'm in!"

Chapter One complete!

I hope you guys enjoyed it! Like I said, my main focus at the moment is 'Foresight: The Knowing Hero' (although technically my main focus is my exam that's tomorrow, but y'know), but I'm definitely going to be working on this one as well! The updates will just be slow for the moment while I'm focused on uni.

This story will also be posted on my AO3 account if you prefer that platform.

Next Chapter: First Battle Training!