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You're Someone I Believe In

Summary:

Izuku and Katsuki did not expect to start their days like this.

There was another Katsuki.

Except he's older and doesn't have a quirk?

Notes:

This was based on Mikacrispy's tweet found here: https://twitter.com/CrispyMika/status/1193525956444639233?s=20
Go read her threads and fics! One of my favorite BKDK writers!

Chapter 1: Chapter 1

Chapter Text

"Fucking dumbass education. Why did I wanna be a damn lawyer. Fucking piece of shit government.”

You see, Katuki is studying for his midterms for his ethics class. He wanted to help people and get paid well, so… lawyer. He knew it would be hard, but Katsuki could never step down from a challenge. Never has, never will. He’s making flashcards with specific terms on them: plaintiff, tort, appellee, etc.

Katsuki’s hands were cramping up from writing words and their definitions when he decided to take a break, shaking out his wrist and sighing. He leaned back in his chair, eyes fluttering closed as he takes in the silence of the apartment. Izuku was in class at the moment and what he wouldn’t give for a stupid hug was pretty much everything. He hated to admit it, but school has been tough. Classes are getting harder and more demanding, he needs a break. Well, he’s had several of those. They were just more along the line of breakdowns.

A light started to flicker over his eyelids, intensifying with every second. Katsuki made the mistake of opening his eyes for a glance at what was shining on his face only to be blinded. All he could see was pure, white light. Until… there was no more light, but an unfamiliar room. Strewn about with couches and comfy looking chairs. A flat screen t.v. at the front of the room with shelves filled with rows of movies surrounding it. There was even an XBOX on the ground, wires snaking up to the t.v. and disappearing behind it.

“Ah, Kacchan! What are you doing in here? I thought you were making yourself breakfast?” A voice that he could recognize anywhere, even with a slightly higher pitch.

Katsuki glanced up from his spot on the floor and frowned. Where was he? Wasn’t Izuku in class? A young version of his boyfriend strolled up to him, offering his hand to pull him up from the floor. Katsuki took the hand and stood, looking around with owlish eyes.

“Uh… I don’t know how to break this to you, Izu, but you look weird.” Izuku pulled a face, his eyebrows coming together and his lips pursing. “I mean, not in a bad way! You just look really young?” Katsuki tried to fix his mistake only to have Izuku’s expression deepen.

“Who are you.” It was less a question, more a demand as Izuku pushed his left foot back and bent his knees in a fighting stance. His fists curled and rose to his chest as green lightning surrounded him. “I will not ask again.” His spoke darkly.

“Whoa whoa whoa! What the fuck? Izu, it’s me!” Katsuki yelled, his hands coming up in surrender. His boyfriend was threatening him and didn’t know who he was! “Baby, it’s me.”

Izuku’s ears and cheeks flushed pink, but he stood his ground. “Kacchan does not call me that, villain. At least get your facts before trying to infiltrate a hero school.” He growled, swinging his fist at Katsuki who just barely manages to dodge it.
“Izuku! This isn’t funny!” He grunts, hopping away from the angry teenaged version of his boyfriend. “I’m not a villain, dumbass! I don’t know where I am!”

Katsuki wouldn’t dare try to hit Izuku, even if the boy was hellbent on trying to knock him out. He couldn’t fight Izuku despite the boy not knowing who he was.

—————————————————————————————————————————-

All the commotion from the common room brought Izuku’s classmates, shouting and gasping in surprise at Midoriya fighting with an odd looking Bakugou. Iida ran off to find one of their teachers in the main building, hoping they could help with this scuffle, only to see Bakugou walking out to investigate the commotion that lured his classmates to the common room.

“What the fuck is going on out there, four eyes?” Bakugou asks, toweling off wet hands. “Sounds like a fight.”

“Oh, uh, yes! There is a fight, which is why you should come with me to find a teacher!” He grabbed the blondes hand and hurried him to follow, not wanting him to become involved in the fight between Midoriya and the boys clone.

“Hey, hands off! I’m not goin to find some teacher! I wanna see who’s fightin!” He grumbled out angrily.

“No, we definitely need to find a teacher!”

They manage to track down Aizawa, Iida rambling about how there was a fight involving Midoriya and a clone of Bakugou. The teacher sighed and hurried back to the dorm with his students in tow.

—————————————————————————————————————————-

“Woah, this guy is sure able to keep with Midoriya just fine.” A voice says in the crowd of teenagers. Katsuki isn’t sure what to make of it, only that this Izuku must be a good fighter just like his Izuku.

“Why won’t you fucking listen to me?” Katsuki demanded, dodging his not boyfriends punches. Lucky for him, this Izuku had the same fighting style as his Izu.

“Because you are imitating Kacchan!”

“I am Kacchan you asshole!”

“ENOUGH!” A deep voice yelled among the noise. Fabric wound around his limbs and neck, “Who are you.”

“Holy shit, Eraserhead?” Katsuki croaked out in awe. There was no way, Eraserhead was a comic book character. A superhero in a book! “What the hell?”

“Who. Are. You.” Eraserheads scarf tightened around his neck.

“Katsuki B-Bakugou!” He choked out breathlessly.

“Try again, fucktard.” A new voice made itself known. Katsuki’s eyes flickered from Eraserheads face to see himself? What the fuck.

“What?” He looked back to Eraserhead, “I don’t know what’s happening. One moment I was in my room studying for my midterms, the next a bright ass light blinded me and I ended up here!” He hurried out in one breath. The scarf released him and he took a long deep breath of air, gasping.

“Explain everything.” Eraserhead pressed.

—————————————————————————————————————————-

“I am so sorry!” Deku loudly apologized, coming up to not-Kacchan and bowing deeply. “I thought you were a villain! You were acting really weird compared to our Kacchan!” He tried to explain. Not him simply rested his hand on the green unkempt nest of hair, smiling fondly.

“It’s okay, Izu. I know you were just trying to protect your friends. No harm was done.” Deku straightened up and blushed as he noticed just how fondly the blond was looking at him. “But wow! You’re much faster than my Izuku! I was getting real tired there for a second before Eraserhead stepped in! I bet you’ve been training very hard!” He praised, expression lit up as he recollected just how many times in their fight he almost didn’t dodge fast enough.

Deku’s face reddened even more as he brought his hand up to scratch as his neck, unused to the praise coming from his childhood best friend. “Ah, I, uh…”

“WHAT THE FUCK?” The younger version of Katsuki decided now was the time to speak up as he was too dumbfounded to do so earlier. He couldn’t remember the last time he smiled and seeing one so open on his face was fucking weird. “Are you in love with him or something, pervert?” He grumbled, glaring at the man who looked too much like himself.

“Well, actually…” Not him chuckled and looked at the floor. “I kinda am. Well, not with this Izu technically. I have my own in my universe so there’s no need to get jealous, brat.” Not him teased and oh, he did not like that.
“Wanna say that shit again?” Katsuki growled out, little sparks setting off in his hands.

“Holy shit! Izu protect me!” Not him yelled as he hid behind Deku. All six feet of him cowering behind Deku’s five feet and eight inches. Yeah, didn’t work out well.

“Oh! Uh, Kacchan, that’s not very nice.” Stupid Deku pouts at him and he begrudingly stands down. Not at all because his fucking face made him feel bad. Not him seems smug when he stands tall again and sees Deku’s pouty lip, smirking at Katsuki with a knowing look.

“Ah, I’m not able to stand up to that either. Nice to know he has me wrapped around his finger in every universe.” Not him jokes and Katsuki lunges at the bastard, letting out a yell of anger, only to have a scarf wrapped around him and pull him away.

“LET GO OF ME, YOU DICK.” but Aizawa only guides him away from his smug counterpart and a blushing Deku.

—————————————————————————————————————————-

As Aizawa dragged Kacchan off, Izuku and his classmates turned back to the older Katsuki. The self proclaimed Bakusquad had matching smirks, ready to get some blackmail material on their friend if this version of him was any similar.

“So… Bakugou number 2.” Kaminari spoke up, sauntering up to the man. “How old are you? Do you not have a quirk?”

Izuku gasped, head snapping to the blond, “It is rude to ask someone's age!” He scolded gently. Not-Kacchan smiled - which was weird by the way, Kacchan’s face was not meant to look like that - and threw his arm around Izuku’s shoulders.

“No need to worry about my feelings, babe.” He voiced lowly, locking eyes with the green haired boy and giving him a cheeky wink. “I’m 23.” Izuku attempted to shrug off the mans arm, his face on fire, but Not-Kacchan merely pulled him tighter against his body. “What’s a quirk?”

“A quirk is an ability that’s unique to the person who possesses it.” Kirishima speaks up, smiling widely. “Bakugou’s is Explosion. He sweats nitroglycerin from his hands or something and can make it spark.”

Not-Kacchan winces, one of his eyes shutting and the other squinted. “Yikes, sounds painful.”

“Kacchan has never said it hurts.” Izuku says, hand on his chin. “Even when we were younger and he first manifested it, he never mentioned any pain or seemed to look like he was in pain. As much as I believe he wouldn’t particularly voice his probable burns, I doubt he would go this long without finding a solution even if it did hurt.” Izuku trailed off, voicing his thoughts.

“At least that hasn’t changed.” Not-Kacchan says to the group, chuckling. They all laugh with him, albeit some with apprehensive at this nice guy attitude.

“Why are you so nice?” Sero asks, hand raised like an eager kindergartner.

That breaks Izuku out of his mumbling and his eyes widen. Leave it to Kacchan’s friends to ask rude questions that everyone is thinking but afraid to inquire on. Izuku balks at the boy smiling devilishly at his friends.

Not-Kacchan’s face crumbles into a much more Kacchan appropriate expression. Red eyes glaring daggers into Sero’s very soul, his upper lip pulled up in a snarl. “Would you prefer I be rude?” He growls out, eyes narrowed as if looking at his prey.

Everyone around him looks pointedly at Izuku, pleading with his strange powers of calming Kacchan down that he can do so with this own as well. Izuku turns to the man and waves his hands around, shaking his head frantically. “No, no, no! We like you nice!” He yelps, “Please continue to be nice! He was just teasing.”

Not-Kacchan gives the boy a small smile, “I can never stay mad when you’re around, cutie.”

What the fuck. What the fuck. What the fuck. Kacchan just called me cute. Well not Kacchan Kacchan. This older Kacchan. Either way his not-crush just called him cute and keeps calling him babe and baby and he is FLUSTERED. Izuku isn’t sure how much more of this his little heart can take.

The classmates around him stare wide eyed at the Bakugou from another world, so very confused by the amount of flirting. “Wait, do you like him?” Mina asks loudly.

“Oh, are we not dating in this world?” Not-Kacchan stage whispers to Izuku loud enough for the others to hear. Izuku shakes his head, red face accentuating his freckles. “Hmm, well soon enough I’m sure. It’s hard not to love you.”

Izuku is officially dead. His soul has left his body. The ghost of gay panics past. “I-I-I-” Izuku is unable to speak at all. Thank god for Not-Kacchan cutting him off from more embarrassment.

“Have you been taking care of yourself, baby? At this age in my universe you sucked at taking care of yourself! I had to cook food for you because you always ate those cups of ramen or just wouldn’t eat. Said you had to study and just grabbed a soda to drink instead.” Not-Kacchan rolled his eyes at the memory. “Are you sleeping alright? You have insomnia here right?”
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Katsuki may have been taken to another room, but he can hear almost everything the bastard and his classmates are saying. There was no way that old man was a version of him. There was absolutely no fucking way. The stupid bitch was way too nice to that dumbass Deku.

“We don’t know how long he is gonna be here. He is gonna room with you in your room if he’s here late.” Aizawa drones on to the explosive blond.

“Wait what? Like hell he’s roomin with me! I don’t want that old pervert in my room! Make him room with Deku since he likes him so much!”

Aizawa rolls his eyes, “I would have them room together, but I don’t know him or trust him. Therefore, he is sleeping in your room.”

Katsuki scoffs and grumbles, angry at the outcome of the conversation. He stomps back into the room with his unlikely twin and his classmates just in time to the old pervert lean into Deku’s space.

“HEY! GET OUT OF HIS FACE YOU DUMB FUCK!” He yells, barging in between the old man and Deku and pushing his stupid face away.

His twin looks at Katsuki wide-eyed before his eyes narrow and his lips tug into a knowing smirk. “Ah, I see.” He mutters.

“I’m surprised you can even see, old man.” Katsuki retorts.

His older twin splutters, “What? I’m only six years older than you!” He tries to explain.

“I can see your gray hair, idiot. That makes you way older than 23.”

Deku peeks around Katsuki’s shoulder, “Kacchan, he doesn’t look that old.” He observed the man, tilting his head. “I think he’s telling the truth when he says he’s 23.”

“Shut up, stupid Deku. I don’t want an old man anywhere near kids. He might prey on them like the pervert he is. Just look at how he was acting with you.”

Deku gasps and turns red again, just as his face was starting to look normal too. “Kacchan! He may have been a little pushy, but that is no grounds to call someone a pedophile!”

Not-Him nods along with Deku’s words, oddly determined look on his moronic face. “Fine, get preyed on by some weirdo, I don’t care!” Katsuki yells as he prowled away.

That’s the last time he tries to help gullible mindless Deku!

----------------------------------------------------------------------------------------------------------------------------

Izuku felt kinda bad arguing with Kacchan. The boy was just trying to help and he pushed away his attempts. Hopefully the boy would calm down and forgive Izuku later. That’s a problem for later. Right now he was concerned as to where Not-Kacchan would go.

“Has Aizawa talked to you about where you are going to stay? Or how you’re going to get home?” Izuku asks the man in front of him who is still smirking at Kacchan’s back. The man’s head whips back at the sound of Izuku’s voice.

“Oh, shit, uh… no. I was too focused on you and the fact that fucking Eraserhead is here. Wanna help me find him so we can figure out where I go?” He asks, a sweet smile on his face, basically telling Izuku there was no way Not-Kacchan was going anywhere without him. Which, to be fair, made sense. Although younger than what Not-Kacchan was used to, he was a familiar face.

Izuku nodded with a nervous smile, “Yeah, I’ll help.”

“WAIT! CAN WE KEEP HIM?” A shrill voice travels through the room.

Izuku startled at the loud the voice. He had completely forgotten his classmates were in the room. And apparently Aizawa had started to walk in when Mina had stopped him with her deafening shriek of excitement.

“Yeah! He could go with us to class! I like this Bakugou anyways!” Kirishima added in with a fist in the air.

Aizawa sighed, “No, we are not letting him into the classroom. You all will get distracted.”

“No we won’t! We promise!” Kaminari whined along with Mina. The devils.

Aizawa sighed even deeper than before. “I will not give in to your antics. He will not come to class.”

Izuku piped up, eyes darting from his classmates to Not-Kacchan to Aizawa. “Maybe he could watch training? He won’t be in the classroom and distract us from learning there.”

Not-Kacchan nodded. “I’d love to see you guys train. In my world, we have comics about superheroes and it would be so goddamn cool to see actual superheroes train.”

Aizawa muttered something that sounded like damn kids and adult kid, but he compromised nonetheless. “Fine, but Bakugou is going to stay with All Might in the teachers office until training.”

“ALL MIGHT?!”