Your quirk: very simple, you can teleport. Kind of like Kuroko from Railgun. When you are starting off, you can only teleport once. That is why you trained hard and learned all of the vital points on a human body. As a pro hero, you can teleport multiple times and to places you have been to before.

"(Y/n)~" Denki whined as he plopped down next to his friend, laying his head on the table, "please teach me your ways!"

(Y/n) pats him on the head with one hand and keeps eating their noddles with the other. Mina sits down on the other side of them. "Please teach us!"

"What's this all about?" They ask, looking over at Sero. He shrugs and walks off into the kitchen to grab something to eat.

"We're gonna fail English!" Sniffs Mina. "Nothing makes sense! Why does the language have to be so complicated!"

"Yeah!" Denki joins in, the look of absolute defeat in his eyes. "You're the fourth best student in class and our friend! Please teach us."

(Y/n) finished off their noodles and put a hand on their heads. "I hate it say it guys, but I'm going to fail too."

Mina and Denki shoot up form their seats, "you're gonna fail too!"

(Y/n) nods their head but their facial expression remained calm. "I've been so focused on other things that I haven't had the time to study for English. And like you said it's a dumb, complicated language."

"What's that!" Another student shouts from the staircase, "the number four student doesn't even know English!" Bakugou and Kirishima appear from the stairs. Bakugou had a smirk on his face that expressed how much of a fight he was looking for.

"I'm still better than you, mister fifth." (Y/n) bites back, "I don't see why you're approaching me but we can fight now if you want."

Bakugou lets off small explosions from his hands, but Kirishima stops him from saying anything. "Bakugou why don't you tutor them? They are all your friends after all." He says with a nice smile.

"I'll teach Ashido and Kaminari but not the brat." He sighs, "they have nothing to offer me."

Mina and Denki look at each other in confusion. They are both close friends with (Y/n) but are very afraid of failing this class. The room fell silent as Sero walks out of the kitchen. All eyes were on him, he could feel the heavy tension in the room and chose to walk away, back to the kitchen.

"Go ahead guys." (Y/n) says in the most confident voice they could muster. "I don't need this pomeranian to teach me anyway."

"What the hell did you say to me!" Kirishima grabs Bakugou as large explosions go off in his hands.

"Let's go." Kirishima sighs as he drags Bakugou away from the scene with the help of Mina and Denki who wave 'bye' to (Y/n).

"What the hell are they doing here?" Bakugou snarls when he opens his door the next day to see Mina, Denki, (Y/n), and Kirishima standing at his dorm room.

(Y/n) smirks, "I brought you the spiciest food I could make, that won't make you end up in a hospital."

Bakugou let's the others through but keeps (Y/n) outside. "And why the hell would you do that?" He glares.

"To call a truce." Bakugou looks even more pissed off. They sigh, "you and I are being paired up tomorrow to fight against 1-B. Mr. Aizawa said so himself this morning, if you can even recall that far ago in time."

"Oi-!"

"And we all know that we both hate losing, especially to anyone in 1-B." (Y/n) scratches their head.

Bakugou rolls his eyes but takes the food from their hands, "fine." He walks back into his room, letting (Y/n) follow and closes the door behind them.

The group was up all night eating the food (Y/n) had prepared while Bakugou was yelling at them the whole time.

"Wait," Kirishima says, "I thought you were bad at this?" He questions (Y/n).

"Yeah I am." They reply, "English is my worst subject."

"Then how come you haven't gotten any problems wrong?" Denki asks.

"This is my worst subject, but I'm not dumb." They answer and Mina sniffs a laugh.

The other blink at them but Bakugou smirks. "For once, I like what you said."

Everyone looks at each other, back at Bakugou, and then back at each other.

"Bakugou my man," Kirishima puts a hand on his shoulder, "I didn't know you had it in you." He gives his friend a thumbs up.

It took a few seconds for Bakugou to realize what he had said. "I'll murder you, shitty hair!"

----

"Alright so next up is (L/n) and Bakugou going up against Kendo and Monoma." Mr. Aizawa says in his usually unenthusiastic tone.

The teams stood on the opposite side of the make-shift arena the teachers put together the night before. 1-A was one the left and 1-B was on the right. "You may begin." Mr. Kan, class 1-B teacher, says.

Monoma instantly starts laughing, "you think these two pose a threat against someone like me?! You teachers should really-"

He was cut off mid-sentence by Bakugou charging straight for him, allowing (Y/n) to hold their breath and use the smoke as a cover. Bakugou blasts both Monoma on each side as the student braced himself for impact.

"You dumbass!" Monoma laughs, "you missed me by a long shot!" His laughter was cut short by (Y/n) hitting him on the side of his neck, causing him to fall onto the ground in an instant.

Kendo, not having moved an inch, looks over at her class. She gives them the 'well then...' look before turning back around and holds her hand up in the air. "We all knew how that was going to end."

The teachers sighs, "the winner is 1-A." Kendo drags Monoma off the arena and says, "one day I would actually like the chance to fight you guys."

(Y/n) smiles at her, "honestly, I would too." 1-A was cheering for their classmates and idea pops into (Y/n)'s head. "Bakugou, we should do a hand shake!"

"No way in hell." He says with a blank expression and tries to walk out of the arena.

"But it'll really piss everyone off when we win." They smile devilishly, standing in front of Bakugou.

He glares at them but quickly realizes that he has no choice. "Fine. How does it go?"

"Up! Down! Twist it around! Bang! Bang! Boom!" (Y/n) and Bakugou cheer, signifying their defeat to the everyone who was watching in the stands.

"The winners for the 3rd-year partner battle royale is," Mister Mic pauses for dramatic tension, "(L/n) and Bakugou!"

3-A cheers and everyone runs up to the arena. Bakugou smiles at (Y/n) but only for a second. "Was the hand shake...thing...really necessary?" A guy in the crowd whispered.

"I guess so..." The person sitting next to him answered, "it's really cheesy though and doesn't make much sense."

"Oh trust me, it makes sense." Mirio, now on his way to being a pro hero, says as he watches his former classmates cheer. "Those two didn't cooperate for a long time. That hand shake is basically the foundation of their relationship."

"Wait, they're dating?" Someone far off in the stands gasps.

"No." Tamaki bites and mumbles, "stupid." Nejire sniffles a laugh, "those two are really something though. I wouldn't be surprised if they surpassed Deku or Shoto once they graduate."

Mirio nods but the people around them blink in confusion. "So... back to the hand shake..."

"Oh right!" Mirio chuckles, looking over at Nejire, "how did they come up with the hand shake?"

She smiles, "well Bakugou usually jumps forward and 'up' before he uses his quirk. (Y/n) then goes into the smoke, or 'down' if you will, to make themselves hidden. The 'twist it around' part is either because (Y/n) has to move their body to knock out their opponent or when they have to change up their strategy."

"Wait, so you don't know why they do everything?" Another random women asks, interrupting Nejire. The random person received glares from the other people around them, causing her to quickly back down.

"'Bang bang' is because they both hold a finger gun up to each others head and 'boom' is because they move that hand to the opponent and 'shoot'. Or because of Bakugou's quirk. You can decided which one it is~" Nejire smiles widely, seeing her former classmates again fills her with joy.

"Do you really think they will surpass Deku and Shoto?" Tamaki asks Mirio.

"Yep!" He beams, "as much as I love Deku and admire Shoto, they are no match for that powerhouse duo."

"We'll see about that." Nejire challenges, "Tsu and Ochaco make quite the team."

Tamaki chuckles, leaning back in his seat, "Ejiro and Bakugou make a good team too you know."

"I guess we'll have to wait and see!" The person who asked about the origins of the handshake laughs. The Big Three glare at him in return.

----

"Ground Zero! (H/n)!" The secretary at their hero agency runs out of the building as fast as she can in heels. "There's an emergency!"

Bakugou turns around with a pissed off look, "you're joking, right?"

(Y/n) punches him in the arm, and runs over to the secretary. "Where's it at?" They are too familiar with the song and dance about hearing where a villain has attacked. To them, it's best to get straight to the point.

"Over at Deku and Uravity-" the two hero's rush back into the agency, Bakugou shoving everyone out of the way.

"How long?" (Y/n) shouts as they change into their hero costume.

"We just got the call in, the building's on fire and multiple villains have appeared." She replies, trying to keep with the hero's.

Bakugou and (Y/n) set out in a flash to the scene. When they arrived, the building was starting to collapse. Bakugou spotted Deku and Uravity fighting against the villains all by themselves. They are a strong duo but they were too out numbered.

Bakugou and (Y/n) gave each other a quick look before running off into different directions. (Y/n) ran into the building without thinking much. They scanned the scene, not finding anyone they started running up the stairs. The building was about five stories and many people weren't able to make it out of the third story.

"(H/n)!" A person shouted through all the smoke, "over here!" Another person pleaded.

"How many people are on this floor?" (Y/n) asks, quickly gathering everyone in their arms before teleporting them out of the building.

"About ten." He responds and looks around at the people gathered outside. "Everyone but one person is here."

"Creati!" The other person shouts as Yaoyorozu arrives with Earphone Jack.

"(H/n)!" Jiro shouts as the girls rush over. "What do you need us to do?"

(Y/n) looks over at Yaoyorozu, "I need you to create something that can save a person falling from a four story building. Bring it and place it outside the front windows. Do not follow me in the building." They said as they explain what is happening with the other hero's.

The girls nod and (Y/n) teleports back to the third floor, grabbing the last remaining person on that floor. They have already passed out, leaving (Y/n) having to teleport back out in back in. The more they climb the more unstable the building becomes.

"(H/n)!" Earphone Jack shouts from outside, "we're ready!"

One by one, (Y/n) tosses the people who were conscious out of the window after making sure everyone would be safe while they exited.

Meanwhile, the other hero's had defeated four out of the six villains. Bakugou distracts the the one's that are left, giving Uravity and Deku time to finish up their plan. Bakugou was struck one times too many when the fifth villain fell to the ground.

"Ground Zero!" Deku shouts as he holds back the final villain from making the building collapse even more.

"Where's (H/n)!" He shouts back, Uravity releasing every spect of debris she can onto the villain.

Earphone Jack luckily heard them thanks to her quirk, "they're still inside!" She shouts and watches (H/n) run up to the top floor. The teleport hero quickly finds the last person some how still conscious even with all the smoke.

"(H/n)!" Uravity screams as they get the last person in the building to safety.

"(H/n)!" Deku shouts as he falls to the ground. He had completely lost all of his energy due to over use of his quirk. The villain smirks and charges straight for the building, none of the heros would be able to stop him in time.

"Dumbass!" Bakugou shouts as loud as he could. (Y/n) already figured out what was going to happen, looking out each window quickly to see where the villain was. Once they spotted him, they teleported over to the window as soon as the villain crashed into the building.

With all their remaining strength, (Y/n) turned their body around and kicked the villains neck as hard are they could. Luck was on their side they were able to hit the villain's vital point, causing them to fall onto the building.

Only problem now was (Y/n) was falling from the fifth floor of a burning building. Creati, Earphone Jack and the other workers from the building managed to almost catch them. The force caused them to bounce off of the life net and they landed onto the ground with a loud "thump!"

The hero's were relieved that their job is finally over. Uravity, being the only one who could still move, Creati and Earphone Jack started directing people who have arrived to the scene. The police took away all the villains while the hospital workers began with the people from the building.

"Tch, took them long enough." Bakugou laughs.

"The building was on fire." Deku replies, his body completely given out.

"Surprised you can still talk over there." Bakugou barks back before looking at his partner in crime. "Hey, dumbass." He doesn't get a response like he usually would. He immediately got worried, "oi! dumbass!" Still no response and everyone seemed to be ignoring the pro hero who's bodies have given out. "Oi! Get your asses over here!"

----

"When do you think they'll wake up?" A women's voice asked.

"Soon probably, (Y/n) is used to stuff like this by now." Another voice replied.

"Cause they're Bakugou's partner?" The first voice said.

"Yep." The other voice laughs.

(Y/n) wakes up with a jolt, sitting up in their bed as soon as their eyes opened. They looked around the room in a panic as the pain soon kicked in. "Go get a nurse." Mina told Ochaco who run out into the hallway.

(Y/n) looks over at their friend in a panicked state. "What happened? Where is everyone? The villains?"

Mina puts a hand on their shoulder, slowly pushing them back onto the bed. "Everything is okay, the villains are gone. You are in a hospital right now cause you passed out, again, because you overused your quirk, again." Mina was used to the song and dance of explaining the situation to her friend after a long battle.

"What about the others?"

"Deku is in another room being treated, Ochaco is fine with some mediocre injuries. Bakugou is next to you, he made a big fuss about being in the same room as you again-"

"Who the hell won't shut up-" Bakugou mumbles as he pulls back the curtain that divides their hospital beds. The nurse and Ochaco walk back into the room as well and catch a glimpse of him smiling at the sight of his partner being safe. "Glad to see you're finally awake."

The nurse asks all of their questions and the girls decide to leave Bakugou and (Y/n) alone for the rest of the night.

"I swear we better get time off because of that." (Y/n) sighs.

"Yeah no shit." Bakugou chuckles, "you look ruff over there."

"Speak for yourself, Katsuki." They say.

"You know sometimes I regret telling you my first name." He sighs but looks over at his partner. "I always knew one day you would use it against me." He adds in a joking tone.

"Well you knew that when you told me." (Y/n) replies, holding out their hand to try and reach Bakugou but fails.

They both frown at the sight, "you're too far away from me again." (Y/n) sighs and moves the blanket off of themself. They were about to move but noticed all of the burns covering their legs. "That's why my legs feel numb." They let out a dry laugh and Bakugou grunts as he stands up.

"Where the hell do you think you're going?" (Y/n) tries to joke. "You're just as injured as me."

"Not really," he says, sitting down on their bed and looks at all of the burn wounds. "I didn't get hurt as badly as you did." He takes their hand in his and smiles, "you scared the shit out of me back there, you know." He leans his forehead onto his partners, "don't do that every again, you hear me."

(Y/n) chuckles, "no promises. It is my job after all." Bakugou rolls his eyes, "and you better not kiss me." They add, "not until after our first date."

"It's not my fault we couldn't have a date cause of a villain attack." He mocks, "but fine. I'll respect your wishes."

Bakugou gets up and notices that his bed has wheels at the end but no locks on them. He smirks and slowly pulls his bed closer to theirs. "Care to inform me on your plan?" They ask as Bakugou slowly climbs back into his hospital bed.

"Clearly I can't sleep beside you with all of your wounds like that, so here-" he holds out his hand. "But I can at least hold your hand until you fall asleep."

(Y/n) smiles softly at him and takes his hand. "Good thing I'm your work partner."

As (Y/n) slowly starts to fall asleep, "one day you'll be my partner for everything." Bakugou mumbles, looking at their intertwined hands. A genuine smile appears on his face.

So I decided to not add in the last part to this one shot because:

1. it was going to be domestic Bakugou, implying that him and the reader are married

2. I don't have a IQ high enough to explain why they can have kids nor do I want to look up how that works, and then figure out how to explain it since I left the reader's gender up to you, and like I don't know your body-