SUMMARY:

Midoriya Yuka, the twin sister of Midoriya Izuku. Yuka and Izuku were joined at the hip when they were children but in recent months the twins have drifted apart. Yuka, frustrated and lonely, has grown closer to her childhood frenemy Bakugo Katsuki but she's also been reminiscing about a friend that she met when she was eight. She hasn't seen this friend in 4 years but that changes during an impromptu shopping spree and she is reunited with this special friend. Two months later, Yuka's life is turned upside down when a secret her brother has been keeping comes to light and the true identity of her special friend is revealed to her and she discovers she has a second quirk. Yuka can barely process the chaos that her life has become so she turns to the only constant thing in her life, Bakugo Katsuki, but even being with him doesn't make the chaos stop. With the loneliness and the confusion and the inner conflict all building up and becoming too much for Yuka, the young trainee hero makes reckless and risky decisions that only make life harder for her.

PROLOGUE PART ONE

For the first time in my life, I actually want Katsuki to punch my brother and I actually want to spend time with Katsuki. He's been the one there for me while Izuku has been going out doing, god only knows what lately. He's been brushing me off and cancelling plans we made months ago or things we've done since we were children. I understand we're both teenagers now and about to start high school and lots of things are going to change, I just didn't think that the sibling stuff we did together would be dropped as fast as they were.

All that Izuku has told mom and I is that he's training, no other details beyond that. I get it, he doesn't have a quirk and he wants to get into U.A, into the hero course without a quirk and so it's going to take a lot of work, but he could at least share where he is in case something happens.

Mom and I are sitting on the couch watching a cooking show but my thoughts are driving me mad and I can't focus. "Mom, I'm going to take a walk." I tell her, getting up and grabbing my sweater.

"Oh, sweetie, take an umbrella, it's supposed to rain!" Mom gets up and grabs my umbrella from the closet. She also grabs my drawstring bag, putting the umbrella in it. "You have your wallet and keys in here as well, right?"

"Yeah, why?" I ask her, slipping the bag over my shoulders.

"I am going to head out in a couple of minutes here to run some errands and get a few groceries." Mom answers, kissing the side of my head.

"Okay, I'll be safe, mom and I have my phone on me. It still has a decent charge." I tell her and kiss her cheek. I head out the door and down the stairs. As I step out onto the sidewalk and actually focus on my surroundings I can smell the rain in the air. As long as there isn't thunder or lightning, I'll be fine to continue on my walk for a little while.

Before I start on my walk I decide to finally read the several text messages I received earlier in the day. Opening up my messages, at the top there is Katsuki who is responsible for four of those messages, then there's my therapist with one message, and at the bottom there's Izuku, who is responsible for two of those messages. I take a quick glance at Izuku's messages and it's just another empty apology that I don't even bother replying to.

My therapist is just checking in and confirming the date for our next in-person appointment. I give a quick reply to that, not really feeling like talking about today with her right at this particular moment.

Katsuki on the other hand is asking how I'm doing and what I'm up to today, with his usual insults of "dumbass" and obnoxious nickname of "flame brain" sprinkled throughout the messages. I tell Katsuki that I'm taking a solo walk for a little bit and that I'm doing alright, just dwelling too much on things that are stressing me out and making me angry.

When he asks who he needs to punch my thoughts from earlier come to mind. I tell him my brother and he tells me that he'd be more than happy to do that for me, just give him a time and a place.

Lol. I would if I knew where the hell he's been going every day for the past three months.

I'll meet you at the mall, Flame Brain. You're not allowed to say no.

No.

Smart ass.

How long have you known me? Okay I'll meet you at the mall then, Katsu.

Meet me in the food court, like usual.

Okie dokie.

I have been saving my allowance all year and Katsuki is taking me to the mall… Screw it, impulsive shopping spree it is. I cross the street to take the shortcut down to the mall. I found this shortcut recently, since I've been spending a lot more time alone I've had time to be more observant than I normally would be if I was hanging out with someone else. It's a back alley but it cuts out at least three lengthy turns I would normally have to take.

Arriving at the mall I head to the food court entrance and step inside. Just as I step inside, the rain starts. I hope Katsuki has an umbrella and that rain is all the weather is going to do today. I go over to the smoothie bar and get a strawberry banana smoothie and then find a table to sit at to wait for Katsuki.

By the time I see my spiky haired best friend I'm halfway done my smoothie. I get up and head over to him to save him the trouble of looking for me, and to save my ears from his very loud complaining.

"Hey Katsuki." I offer him my smoothie and he takes it from my hand and starts sipping on it.

"Hey Flame Brain." He bops me on the top of my head with his fist. I love it when he does this, I mean I love head pats in general but Katsuki's are special. "Do you have any store you want to go to?" He asks as we start heading out of the food court.

"Hmm, I want new sneakers and a new ball cap, so maybe Dsquared2?" I suggest and he nods, straw in his mouth. "You don't want to get food first?" I ask him and bops my head again.

"I came here to spend time with you and do whatever you want, besides, I got the rest of your smoothie to last me a while, we'll get food later." He answers as we head into Dsquared2. It's marketed as a men's clothing store but I buy a lot of my ball caps from here and occasionally my shirts.

Entering the store we head straight to the ball caps and I see three that I immediately like. "Katsuki, could you get those three for me, please?" I ask him and He casually grabs them off their hooks without much effort. He grabs a fourth one and puts it on top of my pile.

"This one would look good on you." He explains nonchalantly. I look at the sizes of the ball caps and hand one of the three I picked to Katsuki. "Won't fit?" He asks and I nod. He then looks at the size himself then places it on his head and it looks okay on him. I turn it backwards and now it looks incredible on him.

Katsuki pulls the most "bad boy" look ever and my cheeks flush. "I'm buying that for you!" I take it off his head and then take the hats up to the counter and pay for them.

Once we're out of the store I pull his hat out and put it back on his head. This time when he looks at me he's grinning and I don't just blush, my entire head bursts into flames. Katsuki is howling with laughter while I struggle to calm myself down and extinguish the campfire that is my head.

My quirk is Flammation, I can manifest and manipulate any kind of fire. I can also set any part of my body on fire and not be burned by it. Basically, I'm fireproof. It pissed Katsuki off when he learned that when we were kids. While the initial explosion from his quirk can knock me off my feet, the fire from his explosions doesn't affect me. Now, I believe he finds it interesting and cool.

The fire dies down and Katsuki has stopped laughing but he is still snickering. "You suck, Katsuki." I playfully shove him and he shoves me back.

"I will never let you live that down, Yuka!" I know he means it too. I can see it now, years later I'm getting married and Katsuki tells everyone in attendance about the time my face burst into flames in the middle of the mall all because he was wearing a ball cap backwards.

"Yeah, yeah." I push against his shoulder again, a grin finding its way onto my face.

This is exactly what I needed today, time spent with my best friend. Katsuki and I aren't always buddy-buddy, I mean he relentlessly picks on Izuku and often crosses lines he shouldn't, with anyone, but at the end of the day he's always there for me. Though, a few months ago I punched him in the face after he told Izuku to take a swan dive off the middle school roof. That day was…interesting, for lack of a better word.

Since that day our friendship changed, we've argued and fought a lot less than we used to. Katsuki really only makes comments to Izuku when he sees that my brother is pissing me off or Izuku is actually getting on his nerves.

"So, what has that damn Deku done now?" Katsuki asks, pulling me from my thoughts and memories.

"Oh you know, he just casually cancelled plans we made months in advance and forgot about our monthly "twin date" thing we've done since we were kids, for the past three months." I answer in a sarcastic tone but my anger slips through. "Nothing major." I add under my breath but Katsuki still hears me.

A growl comes from him and tiny explosions go off in his hands. His brows are furrowed and his jaw is tense, he's glaring at nothing. "Damn Deku, next time I see him I'll punch him."

"You know, I get it, he's off training because he wants to get into U.A, into the hero course without a quirk but…"

"That doesn't give him an excuse to bail on his sister with no explanation, Yuka." Katsuki finishes my sentence for me, his tone is a lot calmer when talking to me. Most of the time that's how it is, no matter how pissed he is at someone, if I'm with him he's always calmer when speaking to me. Unless he's mad at me, then it's the usual yelling and the insults.

"I know, Katsu." I reply, quietly frustrated. A few moments later I get a bop on my head.

"Come on, we're here to get your mind off of your brother! Let's go get you those new shoes that you want!" He enthuses. He tosses the smoothie cup in a trash can we pass by then grabs my wrist and pulls me down to the new shoe store that just opened up.

We stop just outside the store and Katsuki holds his hand out to me. I look at his hand then up at his face, confused. "Hand over your wallet, you're not buying these shoes, I am." He states firmly. I do as I'm told, I learned a long time ago that when Katsuki wants to buy me something there is no winning that argument with him.

He pockets my wallet and grabs my wrist again. We go to the converse section, since that's my favorite brand of shoe. "I have one condition." Katsuki states, grabbing my shoulders. "You have to wear the shoes to the entrance exam."

"Deal." I agree enthusiastically and he lets me turn back to the shoes. I scan the racks until one pair catches my eye. They're bright pink with black laces and a black converse star. "Those ones!" I point them out and Katsuki grabs them and gently pushes me onto the bench. He loosens the shoe and then pulls off my current sneaker. I'm giggling as he puts the shoe on for me.

He presses his thumb into the shoe to see where my toe is at. "Stand up, see if they're comfortable to walk in." He instructs and I do as I'm told. Taking a few steps in the one shoe I have on, I deem this pair worthy to be my new shoes.

"These will work, and they'll last me a year or two." I tell him and then sit back down. Before I can even bend down to take the shoe off, Katsuki's already doing it and putting my original sneaker back on. He even ties my sneaker back up for me.

"Awe! Your boyfriend is so sweet!" A person, about our age, coos. My cheeks are growing warm, I pray my face doesn't burst into flames again.

"Oh um…ugh…he…thanks!" I reply awkwardly. I don't really want to tell her Katsuki isn't my boyfriend because it doesn't really matter to complete strangers who I will probably never see again.

"Come on, Flame brain." Katsuki grabs my hand and yanks me up towards the cashier. His cheeks are pink and he's making an effort to not look at me.

He pays for the shoes and we leave the store in silence. He still has a hold of my hand, all the way to the video game store. "Katsuki." He lets go of my hand then and finally looks back at me.

"What, dumbass?!" He's forcing the aggressive tone this time. His cheeks were starting to go back to normal but now they're pink again.

"Thank you for the shoes." I get a bop on the head and the pink in his cheeks fades and a smile finds his face.

"Gotta make sure that you're at your best in the entrance exam, Flame Brain. Especially since I would feel cheated if you didn't get in because your feet hurt." Katsuki tells me and I laugh.

"You would feel cheated, imagine how I'd feel!" I know he wants me to get into U.A just so he can compete with me, though he knows I really only applied for the hero course at U.A because he convinced me I could make it as a hero. I was going to apply for the general studies course…mainly out of anxiety, but like I said Katsuki convinced me to apply for the hero course, because he's sure I can make it as a pro hero.

I have no idea what he sees in me that makes him see that but maybe taking this chance I'll come to see it for myself!

Katsuki and I ended up buying five games each, four of the games are multiplayer and we agreed to not start them unless we were spending the day together. The other two games are mine and Katsuki's favorite games. I bought his favorite game and he bought mine. We agreed to play them separately then meet up after we finished them to see if we could figure out why it's the other's favorite game.

After that we went to the food court and got lunch and when I started getting tired and decided it was time for me to head home for a nap, Katsuki offered to walk me home but I declined. I told him it was because I want time for my own thoughts, not about my brother, but about U.A and my life in general and so I could just do a few things on my own that have sort of become a "ritual" for me. To make sure my best friend didn't worry about me I told him all the places I would be stopping and told him I have my GPS on. After that he was okay with letting me walk home alone.

I'm still at the mall right now, because not only do I want some new reading material but I want to relive memories that are special to me. Memories that not even mom or Izuku know about. Well…they know about one, but the rest are all memories I have kept to myself. The one mom and Izuku know about is the first special memory tied to this comic store.

I go to the back of the store and look through comic books that are for patrons to take over to the lounge area and read. Flipping through them I am disheartened because I can't find the one the boy, who I started calling Soukei, always read to me whenever we met up here. We met up almost weekly and he always read this series to me, after teasing me.

"Well, that sucks." I mutter to myself but then a moment later the comic book appears in front of my face and I back into someone. Immediately, I whip around as fast as I can and send my fist into the person's face. A moment passes and I recognize who it is that I just sucker punched in the face. "Oh my god…" The light blue hair, the red eyes, the irritated skin under his eyes and one the sides of his neck… did I just sucker punch Soukei-kun? The boy who is the subject of my "special memories"?

"Mommy!" I'm eight years old and I got separated from mom and Izuku because I saw a giant walking teddy bear and wanted a hug from it. I ran after it, ignoring my mother calling my name. I was a reckless kid, still am I guess. "Mommy, Izu?!" I call out again, my eyes filling with tears. "Mommy!"

I bumped into someone just as I started crying. Looking up it was an older boy, probably in his teens. He had light blue hair, his eyes were a pretty shade of red and under his eyes looked like irritated skin. He was wearing a beige turtleneck and black jeans.

"Hey kid, are you lost?" The boy asked and I nodded, sniffling too much to actually articulate anything. "Come on, I know where your mom and brother are, I was in the same comic book store a few minutes ago." The boy grabbed my hand, but not with all five fingers. I don't know why I noticed that but I did, now I think it might have been because of his quirk.

"My name is Midoriya Yuka, I'm eight years old." I told the boy but he didn't respond. We walked together for about ten minutes until we reached the comic book store he had talked about. I immediately spotted my mom and Izuku.

"Mommy!" I called out and she and Izuku started making their way over to us.

"From now on, don't get lost little one, I would hate to see anything happen to someone as cute as you." The boy said that one final thing to me and started making his way away from us. By the time mom and Izuku reached me I was staring off at the back of the head of the boy who guided me back to my family.

"Thank you!" Mom called after the boy, who only gave a simple wave over his shoulder.

I never got his name, so after our next couple meetings I started calling him Soukei, a name I made up myself.

"Well I was going to say 'don't get lost now, little one, would hate to see anything happen to someone as cute as you', but clearly you can handle yourself." He states, rubbing his cheek and wiping the blood away from his nose.

"Soukei! Oh my god I am so sorry!" As an apology, I hug him as tight as I can. He hugs me back but it feels different than it used to. It's not as warm and it feels distant. He feels distant.

"You've grown up quite a bit, little Ichisekai." He points out, using his nickname for me. When I take a step he pats my head, but like usual, with only four of his fingers touching me.

"Yup! I turned fifteen eight days ago!" I confirm cheerily. I am overjoyed to see him again. "How have you been Soukei?" I ask him and he seems surprised by the question.

"I've been alright, Ichisekai." He answers softly, a fondness in his tone that's always been there when he's been talking to me, but again I notice that there's a new distant feeling with him. "I would love to stay and catch up but I have errands I have to run." He turns and hurries out of the store, only confirming what I'm feeling from him.

I run after him. "Wait!" He stops but doesn't turn around. "I miss you, I hope to see you again soon!" He looks over his shoulder and I see a half smile. Soukei gives me the same wave he gave my mom seven years ago as he continues to walk away from me.

I was expecting to see Soukei again, in the same comic book shop, but what I wasn't expecting were the events that took place two months later… and the after effects of those events.