Actions

Work Header

A Hero's Fluffy Sidekick

Summary:

Join new high school students Bakugou Katsuki and Midoriya Izuku on their first day of UA high school.
The stress of starting school is already high, but adding in being in different classes for the fist time and a fluffy service dog into the mix? There is sure to be a ton of trouble.

Notes:

This was originally supposed to be a 1000-2000 word one shot...

Nozumi is based on my own interactions and experiences with my personal service dog!
If you see or have any issues please let me know!

(See the end of the work for more notes.)

Work Text:

     As he knocks on the Midoriya household door Bakugou gets increasingly more annoyed. Just as he is about to start yelling the door is finally pulled open”Good morning Katsuki!” Inko Midorya says as she opens the door pulling the blond in for a hug. “Are you ready for the first day on your path to becoming a hero ?” She says as she pulls away “Of course I am Auntie!” Katsuki says puffing out his chest. “I've always been ready!” 

    Laughing at his response Inko makes her way over to the kitchen. “Katsuki, Izuku should be down soon, but I have some rice and miso in the kitchen if you'd like some before you and Izuku leave for class.” Tempted by his aunts cooking katsuki leaves his bag and shoes by the front door. “Speaking of that, where is the nerd anyway?” Katsuki says walking into the kitchen and serving himself some breakfast. Rolling her eyes Inko steps out of the kitchen to check on her son.

     “Izuku honey! Katsuki is here and you need to leave soon!” Inko’s yell is followed by a loud thump and the sound of scratching on a door. “I- I’m coming!” Izuku stammers out running down the hallway his akita Nozumi trotting along behind him. Upon seeing Izuku’s appearance Katsuki suppresses a snort. Tie in a knot, hair barely brushed, and papers falling out of his bag, he is nothing short of a hot mess.

     “Kacchan... “ Izuku groans out as one of Katsuki’s snickers slips out “Katsuki dear, can you please help him out? I need to feed Nozumi then you three should be all set to go.” Inko says messing with her son's hair making it somewhat more presentable. Katsuki rolls his eyes, but he gets up nonetheless grabbing Izuku by his tie. “No matter how many times I show you how to do this, you are never gonna be able to do it right are you nerd?” Katsuki says raising his eyebrow at the shorter teen in front of him as he fixes his tie. “Probably not…” Izuku says his face turning red in embarrassment.

     After fixing up Izuku’s appearance they sit down to finish breakfast. After a few minutes both teens and Nozumi are done, placing their dirty dishes in the sink they begin to get ready for their first day of high school. After getting himself ready Izuku runs to his room to grab Nozumi’s service dog gear for the day. Upon seeing the decked out All Might gear Katsuki groans somehow forgetting how much of a hero nerd Izuku is.

     “You do realize that we are going to a hero school right? Where real heros will be teaching us?” Katsuki says still going on about Nozumi’s gear as they start walking down the road away from Izuku’s apartment. “Kacchan, I thought you liked the hero vest?” Izuku says after thinking for a moment, his nerves starting to get the best of him. “I do Deku, but what if you see All Might and he thinks it's weird or something?” Katsuki says noticing his hesitancy and bumping into the smaller teens shoulder throwing him slightly off balance.

     “Oh god! What if he ends up hating me? Kacchan what am I supposed to do then?!” Izuku says beginning to freak out. In response Nozumi begins to paw at his leg, ignoring her Izuku starts to pull at his hair. Grabbing Nozumi’s leash and Izuku’s arm Katsuki pulls him past UA’s front gates and to a bench near the sidewalk. “Common Deku, sit down and breathe for me…” Katsuki says handing back the leash as Izuku shoves his face into the dogs fur as he panics. 

     After a few minutes of breathing and calming down Izuku is able to get back up. “Are you okay now? Are you ready to go to class?” Katsuki says earning a nod in response to his question. “Do we still have enough time that you can…” Izuku starts to talk but half of his words are lost to mumbles. “Ha? What did you say? I can't understand your mumbles!” Katsuki says raising his voice as they walk to the building.  “Can you still, uh... Show me your homeroom and walk me to mine Kacchan?” Izuku says trying to keep his voice clear.

     Checking his phone for the time, Katsuki nods. “Yeah, come on we've got half an hour.” As he starts to walk away Izuku grabs onto Katsuki’s hand. The action makes him blush bright red and start speed walking, yanking on Izuku’s arm making him squeak out of surprisement. Making their way through the school Katsuki keeps a tight grip on Izuku to keep him from wandering off even with Nozumi, Katsuki’s face staying red the whole time. After a few minutes of wandering around they make it to the 1-A classroom.

     Izuku stares wide eyed at the looming door that is probably a good three times the normal height. After a moment of staring Izuku starts to walk towards the other direction to find his class, but he is stopped by the hand still on his arm. “Where are you going Deku? I thought you wanted me to walk with you?” Katsuki says agitation filling his voice. Cowering in on himself and looking down at the ground Izuku stutters out, “Oh, W-well I figured since we made it to your class you would just stay.” 

     Letting out a snort Katsuki smacks the back of Izuku’s green head. “Yeah, and let you get lost on your first day? Auntie Inko would never let me hear the end of it.” Rolling his eyes Katsuki begins on his way down the hallway gesturing for Izuku to follow him. “Besides your not that far down the hallway and I want to spook your classmates a bit anyway.” Katsuki says walking up to the 1-C door. “Kacchan please don’t!” Izuku says grabbing onto the blonds arm. “I’m just fucking with you Deku! God.” Katsuki says yanking his arm away and pushing open the door for the other teen.

     Upon opening the door the two teens were met with a screech that left their ears ringing a bit. “What the hell?!” Katsuki screams, if it is due to the ringing or anger it isn't clear. “I'm sorry listeners… But it’s a puppy!” Izuku’s homeroom teacher, Hizashi Yamada or better known as The Voice Hero: Present Mic, yells out squealing quieter in an attempt to control his quirk. “Yeah and a service dog!” Katsuki says in response getting annoyed with the teachers' actions. As this is all going down in the front of the room Izuku, who was too freaked out to really notice his teacher was a hero, sneaks to the back grabbing the seat next to a tired looking teen.

     “Is uh… Anyone sitting here?” Izuku asks the boy quietly, simply receiving a head shake in response. Izuku sits quietly in his seat until Katsuki leaves the room. “See me at lunch Deku!” Katsuki says harshly as he exits the room. “Bye Kacchan!” Izuku says waving his hand around in the air in a goodbye. Even from across the room izuku could tell that Katsuki rolled his eyes at the overzealous action. “Okay Listeners! Homeroom starts in a few minutes so lets start settling in!” Present Mic yells over all of the students' conversations, his voice unmistakably heard. “And Midoryia could you come up to my desk?”

     Letting out a quiet squeak Izuku takes off his bag, setting it in his chair. He then clamors his way up to the front of the room attempting not to bump into any other students on the way. “Y-yes sir?” Izuku stammers out as he walks up. “I just wanted to apologize for my actions when you first walked in.” Present Mic says in a normal voice bowing his head slightly. “No, no don't worry! I'm used to it, that stuff happens all the time.” Izuku says freaking out waving his hands in front of his face. Shaking his head Present Mic dismisses his response and sends him back to his seat.

     “Alright Listeners! Welcome to your first day at UA High! We are likely going to be called down for orientation soon, but before then I have some paperwork for you all.” Present Mic says over enthusiastically holding up stacks of papers. As he begins to pass the papers around Izuku attempts to spark a conversation between the teen next to him. “Hi, I'm Midorya Izuku! What's your name?” The purple-haired teen looks at him like he is crazy, then simply says, “Shinsou…” to appease the inquisitive Izuku.

     Happy that he received a response izuku keeps to himself for the rest of homeroom. Once Present Mic comes over to him and shinso he stops. “So I've gotta ask what's the pups name?” He asks as he sets the papers down. “Nozumi.” He says smiling as she perks up at the mention of her name. “Oh? Like hope?” Present Mic asks, hoping he isn't pressing his student too hard. 

     “Y-yeah… I was at a rough point in life when I got her and she gave me a lot of hope.” Izuku says a frown taking over his face as he thinks back. “I didn't bring back bad memories did I?” Present Mic says looking around as if he was scared Katsuki would pop out and lecture him. Izuku puts a smile and shakes his head easing his loud teacher’s nerves. As his teacher walks away he begins to look over the paperwork but he is cut off by the overhead intercom going off.

“Will all First years please make their way to Gym Gamma for orientation.”

     Upon hearing the announcement Izuku jumps out of his chair ready to leave. “Do you want to sit with me during the orientation?” He asks Shinso, only receiving a shrug in response. “I'll take that as a yes!” As the two of them walk down the hallway Izuku continues to have a one-sided conversation. “You know, you don't talk much…” Izuku says as they sit down in the front of the bleachers. “It’s easier.” Shinsou simply states, satisfied with the answer Izuku just nods his head.

     “Aw! Puppy!” Izuku hears a girl sitting behind him squeal. Ignoring the girl making annoying cooing sounds, he simply just adjusts Nozumi so she sits fully under his legs out of sight. “How do you do it?” Shinso asks, for the first time saying more than two words that day. Izuku simply tilts his head not fully understanding the question. “Like… how do you just ignore people like that?” Shinsou says trying to explain his thoughts gesturing towards the people behind the two of them.

     Shrugging Izuku starts to mess with the hem of his shirt, “I don't know… I guess I've just dealt with it for so long, that I'm just used to it.” Shinsou gives him a concerned look, but he isn't able to comment due to the lights dimming as the orientation starts. Focusing on their principle, who had begun speaking Shinso pushes his thoughts to the back of his mind. Unlike Shinsou, Izuku has a million thoughts running through his mind.

     Looking around the gym, Izuku is left concerned as he is unable to find Katsuki’s puffy blond hair among the hundreds of students. Checking his phone Izuku is left even more confused as he is left with no messages despite Katsuki’s promised random check ins. As to ensure everything with Nozumi was running smoothly. Getting anxious Izuku starts to bounce his leg, earning him a paw bap from Nozumi. As she baps at his leg, Izuku’s knee ends up knocking into Shinsou’s.

     Confused Shinsou raises an eyebrow at him, mouthing out, ‘Are you okay?’ Quickly Izuku nods his head, not wanting to worry his new friend. As the orientation continues on Izuku attempts to keep his bearings occasionally receiving a bap from Nozumi. As Principal Nezu begins to wrap up his speech Izuku hopes that nothing overly important was brought up. Once dismissed Izuku jumps up and walks out as fast as he can while being held back by Nozumi. Making it back to the classroom he lets out a sigh he didn't realise he was holding. Sitting down in his chair, Izuku pulls out his phone. 

 

Kacchan?

What do you want deku?

Did something happen… Who do I have to blow up?

No…

I haven't heard from you and I couldn't find you at orientation…

Yeah, our teacher made us test our quirks instead

Oh, I'm sorry I'll leave you alone now then

Whatever Nerd,

See you at lunch

 

     Smiling to himself Izuku was able to finally calm down. After a moment his classmates start to file back into the classroom. Shinsou sits down next to Izuku side eyeing him. “Okay, so you say you're okay, but then you run out as fast as you possibly could?” Shinsou says, staring at him concerned. Turning red Izuku starts to explain himself. “I couldn't find my friend at the orientation and I got really worried” Laughing to himself Shinsou says, “Oh, the pomeranian kid?”

     Upon hearing Shinsou’s comment Izuku lets out a sound similar to choking, the sound concerning Nozumi. “I'm okay, girl dont worry.” He says patting her head, he then turns to Shinsou. “Never let  him hear you say that… You might actually get murdered.” In response, Shinsou simply shrugs not noticing the seriousness present in Izuku’s voice. Letting out a breath Izuku’s attention is brought to the front of the class where his World History teacher Midnight stands. Gaining everyone's attention she starts to talk and explain the class. 

     The first half of the day goes by slowly as most first days do. Each class consisted mainly of just reviewing paperwork and supplies. At the end of their fourth period their Mathematics Teacher, Ectoplasm,  finishes wrapping up the day's discussion just as the bell overhead rings signaling the start of lunch period. Getting up Izuku does a mini cheer, ready to get out of the classroom for at least a bit. “Why are you so excited?” Shinsou Says as Izuku starts grabbing his stuff.

     “I get to go to lunch and see Kacchan!” Izuku responds, hefting his yellow bag onto his back. Shinsou goes to respond but he is stopped by a loud voice in the hallway. “Come on Deku! I don't want to wait in lines!” Bakugou yells into the room making Izuku jump. “Hi Kacchan!” Izuku says perking up with a big smile. Walking over to the blond he turns around waving at his new friend. “Bye Shinso, see you after lunch!” Shinsou responds with a simple wave before Izuku is swiped away by the explosive blond. 

     Making it to the lunchroom Izuku is left in awe at the sheer number of first years in the room, the number close to how many students were in his entire middle school last year. Pulling him out of his trance Katsuki grabs his arm leading him towards the growing lunch line. “Kacchan, did you know that Lunch Rush is the cook here!” Izuku excitedly says while grabbing a tray. In response he hums nudging Izuku’s shoulder making him look up seeing said hero. Izuku's face goes red as the hero gives him a thumbs up addressing him.

     While Izuku is busy freaking out Katsuki grabs small bowls of katsudon and melon soda for the two of them. Walking past him Katsuki says “Come on Deku!” Izuku rushes up next to him rubbing the back of his neck with one hand the other tightly holding Nozumi’s leash. 

     “Yo Bakugou!” They hear causing the blond to cringe and move to shield Izuku and Nozumi. “What do you want shitty hair?” He barks back at the redhead at the table next to him. “We saved you a seat come on!” Bakugou rolls his eyes at the red heads insistence and starts to walk over. “You got two chairs?” As he says that the group of teens at the table start to move around so there are two chairs now next to each other.

     Moving forward Katsuki allows for Izuku to be fully seen by the group at the table. Instantly he is met with squeals and comments about Nozumi. “OMG its a Dog!”, “She is so cute!”, “Is she dressed like All Might?”, “What is her name?” As they continue to attack him with comments Izuku starts to cower into his chest., but all their sound suddenly stops due to a loud explosion. “Shut up you shitty extras! Yeah it's a dog, whatever? It's a service dog!” Bakugou yells out, leaving the group speechless.

     “Kacchan…” Izuku says breaking the silence. After a moment he then steps up to the table sitting down. “Oh my gosh! Is that your nickname for him? It's so cute!” A girl who was decked fully pink says making Izuku red in embarrassment and Katsuki red in anger. Once the two of them calm down enough everyone is able to introduce themselves. Upon finding out they were all in the hero course Izuku was nose deep in a notebook writing down notes on Katsuki’s classmates quirks. 

     A few minutes into their conversation a blond joins the table introducing himself as Kaminari Denki. As he sits down he apologizes for being late saying he had to talk to his teacher. “Getting in trouble on the first day, nice one dunceface…” Katsuki says only loud enough that Izuku could hear him. The comment earning him an elbow to the ribs from the smaller teen. Looking up from his notebook Izuku is met with the shocked faces of Katsuki’s classmates. “What h-happened?” Izuku says, concerned he did something wrong. 

     “Dude you just did that… To Blasty without getting yelled at.” Kirishima says, his mouth falling open. “Oh uh well me and Kacchan have been friends for years and we've gotten really close over the summer after an… Unfortunate situation.” Izuku says rubbing his neck nervously. “After what happened I think he realized that he kinda had to grow up?” Izuku continues his words making his friend blush. In an attempt to hide his blush Katsuki grabs Izuku and messes with his hair. Finishing lunch the group continues with talk back and forth until Izuku gets up.

     “Woah, dude you have a dog!” Kaminari screams as Izuku gets up from the table to throw away his trash from lunch. Freezing Izuku looks at the giddy blond with wide eyes. Before anyone could say anything, Kaminari is clamoring over chairs to get over to Nozumi. Stepping back with Nozumi Izuku almost trips over his feet. “Stop!” He squeaks out while. grabbing onto the handle on Nozumi’s vest and tugging her closer to him and out of the way. 

     Closing his eyes Izuku tries to keep calm, until he hears some banging sounds. “What the hell Dunce Face?! I knew you were an idiot but I didn't think you were this bad!” Katsuki screams grabbing the electric blond by the collar and igniting small explosions near his face. Upon seeing the scene in front of him Izuku bursts into tears, running out of the lunchroom. Throwing Kaminari on the ground Katsuki growls out, “I'll deal with you later.” Stepping over him Katsuki runs out of the room in search of Izuku.

     Walking down the empty hallway Katsuki looks in the rooms saying Izuku’s name. As he continues down the hall he sees a familiar excited pup stepping out of the bathroom. “Nozumi, Where’s Izuku? Find Izuku!” Katsuki says jogging over to her, her tails wagging as he comes over. Once she hears Katsuki ask where Izuku was she Instantly leads him into the bathroom where he hears snuffles. “Deku?” Katsuki asks while stepping into the bathroom. “Kacchan?” He hears a snotty voice say. “I'm sorry…” 

     Upon hearing his voice Katsuki slips under the stall with Nozumi. “What you got to be sorry about nerd?” Katsuki says sitting down next to him. “I embarrassed you in front of your friends and made you mad at one of them.” Izuku says his voice is still snotty from the tears on his face. “You really think I care that much about those extras?” Katsuki says laughing. “You think those extras get to call me the kiddy nicknames you use or get to see me being soft?” Wrapping his arms around Izuku he helps to get him fully calmed down.

     Once fully calmed down the two of them still had five minutes till the end of lunch. Getting up from the disgusting bathroom floor, Katsuki grabs Izuku’s arm helping him up. “Come on Deku, let's get you back to class before lunch ends. You are not at a point to deal with a crowd.” Katsuki says walking to the door. Nodding Izuku starts to wipe off his face with his sleeve, but his arm is pulled away and is replaced with a paper towel followed by a distinct tongue click. 

     Leaving the bathroom they make it to Izuku’s classroom just as the bell rings. “Than- Oof” Izuku starts to thank Katsuki but he is cut off by his body being pulled into a muscular chest. “No Izu, I’m sorry for letting everything at lunch happen I should have stepped in sooner.” Pulling back Katsuki whispers to Izuku both having tears prick at their  eyes. They hug until Katsuki starts to hear voices in the hallway, he then pulls away saying, “See you later nerd.” As he leaves both teens have smiles on their faces.

     Once he makes it back to his classroom Katsuki storms into the room going straight towards Kaminari. Grabbing onto his collar and lifting him up, bringing his hand up to explode Kaminari’s face only to find nothing happening. Bakugou, sit down.” His teacher says his eyes red and his hair standing on end, erasing bakugou’s quirk. “He deserves it!” Bakugou yells shaking Kaminari. “Sit down!” Aizawa says raising his voice. Huffing he drops Kaminari onto the floor giving a deadly glare.

     The rest of the school day goes on without problem, any potential situation for Izuku was simply calmed down by either a teacher or his new friend Shinsou. Once classes for gen ed students were over everyone began to leave to go home. Walking out of the school with shinso he offers to walk Izuku home. “Oh… shinsou you! I was actually going to wait for Kacchan to get out of class.” Izuku says his face turning red. Laughing at his obvious embarrassment Shinsou waves goodbye walking out the front gates.Sitting on the bench Izuku pulls out his homework while he sits with Nozumi.

     “Hi Kacchan!” Izuku says jumping up from the bench as his friend walks out the school doors. “Deku? What are you doing? You got out an hour ago, or are you that much of a nerd that you wanted to stay at school longer?” Katsuki says hefting his backpack up on his shoulder from where it had been previously slipping off. “W-well I didn't want Kacchan to walk home alone…” Izuku mumbles out earning him a nuggie. “Whatever.” Katsuki says dismissing the conversation, knowing pushing it may cause problems.

     “Maybe I can talk to my teachers to see if you can sit in on training?” Katsuki says nudging into Izuku’s Shoulder, the comment making his face light up. “Really?! I could take a ton of notes on everyone's quirks!” Izuku says continuing to mumble to himself excitedly. Laughing at his friends ridiculousness he puts his arm around his shoulders and starts walking saying, “Come on Deku, let's go home… I think my mom made cookies while we were at school to celebrate our first day.”


Nozumi Reference Art

Notes:

Thank you guys so much for reading! If you enjoyed and want to see more into the chaotic lives of Izuku, Katsuki and Nozumi please let me know in the comments!!

Series this work belongs to: