#x sibling reader

You were the introvert of the two and more of a follower. D-16 was the one in charge of things, and you followed his lead. It was a dynamic you were happy with, and D-16 didn’t seem to mind either.

Though you were quieter and gentler-natured, you always stood by your brother’s side, supporting him through difficult times when society pushed you down. And he was there to support you whenever you were unsure or helpless when it came to being assertive, though he sometimes scolded you to have more bite. 

Violence did not come naturally to you, nor did you like it. So, you mostly acted as the voice of reason. Your brother often listened to you when you reminded him to slow down or that not all solutions needed violence. 

You supported his ideals of a better world and his willingness to stand against injustice. You helped him with his creation of the Decepticons and even aided him in fighting against the cybertronian society that ruled your planet at the time. And then, you watched him lose his way and turn the war into something violent and senseless.  

You tried to talk sense into him, to stop him from crossing the line and tell him that he was going too far. He didn't listen to any of it. When he finally had enough of your interventions, he gave you an ultimatum: to stand by his side or be one of his enemies. 

It was a decision you never imagined yourself having to make. Despite wanting to stay by his side, you could not force yourself to support the senseless violence. So you made the choice of saying no.

The look he gave you was something you never forgot. He declared you an enemy, took the name of Megatron, and returned to his founded faction -- without you.

You joined Orion Pax when he became Optimus Prime and took charge of the Autobot faction, turning it into something true and better. 

You became a field medic and worked in rescue missions during the war. Violence was something you preferred to avoid, but you trained yourself to become a capable fighter and assisted on the battlefield when absolutely necessary. 

You didn’t see your brother often during the war, not that you could bear to face him. Your refusal to join him felt like a form of abandonment, even if he was responsible for the many sorrows that followed.

Optimus and Elita suggested keeping your relationship with Megatron a secret, so you wouldn’t end up targeted for revenge by bots wronged by your brother. You followed it, and only a select few knew about your connection with the Decepticon warlord.

It hurt you to see your brother become more ruthless each day. Whenever you happened to cross paths, he never looked at you or acknowledged your presence, which made the feeling hurt more.

You wished you could have returned that indifference, to stop caring about him. But it was not something you were able to. It left you with a lot of shame, too. He hurt many people, including some of your friends. Something that should make you despise him. You did hate what he became, but there was a small, persistent hope that he might stop and see what he was doing. That the brother you once knew could come back.

You never told anyone about this feeling. Your comrades would likely ridicule you for it. So, you took silent comfort in your twin bond as its existence allowed you to know that your brother was still online.

But that changed after a mission to save Optimus.

Optimus and some of your other comrades were held captive by the Decepticons. With most of your numbers down, you joined the mission, also bringing necessary medical assistance.

You and the other Autobots managed to rescue your leader and comrades and escape on a ship. Your brother and his cons gave chase and caught up with you. Your brother was about to fire his cannon at a pilot until you stepped out and stood in the way.

You locked optics as you stood in his fireline, and though you silently hoped he wouldn’t shoot you, you were prepared to face your end. That he wouldn’t get his way without shooting you. To your surprise, your brother laid down his weapon, though with a silent sneer, and let you go. It was something you didn't expect, and it gave you silent hope that maybe he wasn’t too far gone. 

But that was perhaps the moment that decided what followed after. 

After some time since that mission, you suddenly felt the twin bond vanish, cut down into the cold nothingness like a blade cutting down a string.

You fell into shock and suffered from the side effects for a while. It caused your Autobot comrades to panic as they didn't know what was happening to you. But you knew. Something had happened to your brother, or he had died. Though you probably shouldn’t have, you felt devastated to think your brother was dead. 

But turns out your brother was alive and had decided to cut down the twin bond by surgical means. The news made the reality fall cold around you. Never had you imagined he would do something that cruel, and it essentially told you that you were dead to him.

It hurt you. A lot. And since most of the bots didn’t know of your relation with the Decepticon warlord, you felt even more devastated, as you had no one to talk to about it. Optimus and those who knew helped a little. Though it did not banish the dark thoughts that spiralled in your mind.

You doubted everything you had done. You even felt as if you had made the wrong decision. That if you had decided to join the Decepticons, your brother wouldn’t have done something like this. You were already less confident in making major decisions. And this made it worse.

The depression that followed crippled your mind for a time. You struggled to look after yourself and even became a bit reckless on your missions, which worried some of your friends. You felt ashamed because you couldn't tell them the real reason for your weak mental state, which honestly did not improve your condition.

It took some support from Optimus and some knocking into the helm from Elita to finally pick yourself back up on your feet. The pain became easier to live with, and you came to accept that you were dead to your brother. You even stopped caring about his existence, too, as he had become a complete stranger.

You healed, in a way.

And though not recommended in war, you found love and were blessed enough to have sparklings. Their birth allowed you to feel joy you hadn't felt since the beginning of the war. But as the war progressed, you sent your family to live in a distant colony, away from danger.

You stayed with Optimus and the others, continuing to fight by their side. You had come to accept that things between you and your brother would never be the same, and even accepted the possibility that he might die. The brother you knew was long gone.

But all changed when you arrived on a planet called Earth. While fighting over the Allspark, Megatron suddenly had a change of spark, leaving his faction and joining the Autobots. It was a change you weren’t prepared for, even if he helped you fight against his own people and had the Allspark thrown into the space bridge.

Then the war was over. You were stuck on Earth. Megatron was suddenly an Autobot, assisting Optimus and a division called GHOST to hunt down renegade Decepticons.

Though a small part of you rejoiced that your brother saw the error of his way, you kept your distance from him. You didn’t know how to act around him or react to his change. You grew used to the roles between you, but now that he was an Autobot, everything was different all over again. And you didn’t know how to adjust to that. 

Not to mention that, though you accepted it a long time ago, you still felt hurt over the breaking of your twin bond. 

So, the best thing you could do was to avoid him. 

And it showed. 

You pushed yourself to focus on tasks that could keep you away from the base, or assisted your human partner, who worked as a rescuer in natural catastrophes. Whenever Megatron appeared in the room, you found a quick way to excuse yourself or claimed your next assignment required your attention. Or whenever you would see him, you would turn the other way before he could even see you. You were polite when you had to talk to him, though, keeping your answers short and quick, which made things awkward. 

It was obvious that you were avoiding him.

Optimus eventually brought it up, and you spoke honestly about it and why adjusting to his sudden change felt difficult for you. Your leader was understanding of it, though he encouraged you not to avoid your brother and maybe take the chance to reconnect. 

Your avoidance was clear to your brother, too, and he does want to reconnect with you.

After hearing that, you tried to give it a chance. You really did. 

When Megatron talked with you, you tried to talk more, though every processor in your body told you to walk away. It felt forced, too. It was like talking to a stranger, especially when that stranger is your own sibling. The conversations between you often fell into awkward moments.

However, when you tried to aid him in a task of capturing a con. The way he handled it violently made you see the warlord he used to be. And the way he boasted about it kinda made you recoil from him. It made you remember many unpleasant memories and see that, despite claiming to have changed, he hadn’t truly changed much. 

You didn’t accept missions with him from Optimus anymore and fell back into your routine of avoiding him. 

This, of course, was noticed by your brother. 

You knew about the Terrains living with the Maltos. It was an accidental meeting, but when you learned the story, you were willing to keep them a secret from the GHOST. They were young, curious, and recklessly carefree, but you liked them. They reminded you of your sparklings, even if some of their less-than-safe shenanigans left you scolding them. 

Sometimes, whenever you had free time, you would visit them to check on them. Despite your neutral expression, they seemed to like your presence, and you told them stories of your many travels. 

One time, you helped them make up to each other after they had a bad argument. When they declared that they never wanted to see each other again, it left you startled, as it reminded you of your falling out with your brother. 

You gently guided them to talk things through with each other, which eventually led them to discover that the core of the argument was just a huge misunderstanding. They apologized and hugged each other tightly. The sight left you happy and glad that something like your broken bond didn’t happen with them. 

As you did tell them about what arguments and animosity can do to a relationship between siblings, and the possibility of being cut off from their sibling entirely, the youngsters asked if you had a sibling you didn’t talk to anymore. You didn’t reveal much, except that you had a twin brother you had a pretty bad falling out with. You didn’t reveal much after that. 

Though it left them guessing, they noticed how you avoided Megatron or left whenever the grey mech showed himself. They thought it was strange. 

Strangely enough, Megatron didn’t reveal your relationship with each other to the Terrains either, only revealing that he had wronged you in a way that couldn’t be fixed.

When the pattern continued, after being pressured by the Terrains, Bumblebee would be the one to reveal that you and Megatron were twins. The revelation would shock the Terrains, and that the twin you spoke about was the former warlord himself. 

You had a different look compared to Megatron, so the resemblance wasn’t immediate, though you did share some mannerisms with the mech. 

After hearing the story, the youngsters were motivated to try to help you and Megatron reconnect. So, they made a plan.

The Terrains invited you to spend time with them, suspecting nothing, you accepted the invitation. They did the same with Megatron. You arrived at different times and would then be surprised to see that Megatron was there too. Like out of instinct, you tried to find a way to leave, but Optimus had made sure there was nothing that required your attention. 

Unable to find a way out or refuse the youngsters, you stayed and tried to pull through. You were polite when the youngsters asked about stories with you both, though it was awkward, and it showed. Watching their awkward expressions and attempts to have you and Megatron talk to each other. You realized that they knew about your relationship with Megatron and that this was their attempt to help you two reconnect. 

You stopped the facade there. You told the youngsters that you knew and that their gesture was nice and all. However, they should not have gotten involved in your business, and Bumblebee had no right to reveal things about you. You then attempted to leave. 

Megatron then suddenly stopped you, saying that he understood that you didn’t want to see him, but you couldn’t fix anything if you avoided each other.

“Yeah. Maybe it would be a good time for you two to talk honestly. Have a heart-to-heart conversation. Or, in this case, spark to spark,” Dot packed him up, and the kids nodded. 

“A spark to spark? Is that what you really want?” you asked Megatron. 

“Yes,” he nodded.

“Fine. Outside. Now," you stated.

"And you all stay inside." You told the Maltos, then you and Megatron walked out. 

It was midnight when you two walked out of Maltos’ barn. The moon shone brightly over the farm fields. The stars twinkled. The Maltos' cows were sleeping in their pasture, and somewhere was a cricket filling the nightly silence with a high-pitched chirping. A calm, lovely atmosphere. One you would have enjoyed if it wasn't for your current situation.

You and Megatron walked some distance from the barn, so Dot's children and the Terrains wouldn’t try to eavesdrop as they had a tendency to do. 

“Okay. This should be far enough.” You stopped, crossing your arms and turning toward your brother.

It was quiet for a moment.

“Well… you wanna start?” you asked. 

“I… “ Megatron started, hesitating at first. He then sighed, composing himself. 

“(Name). I have been led to understand that my change of sides had been a... difficult adjustment for you," he began. 

You rolled your optics. “Let me guess, Optimus told you?”

“No need to sound hostile. You and I both know that he means well,” Megatron defended. 

“And I understand. Considering the things that happened between us, I wouldn’t expect you to be happy with me,” he added. 

You scoffed dryly. “How could I not be happy? You switched sides, helped us keep the Allspark away from the cons, and finally ended the war."

“I’m just filled with joy,” you said sarcastically.

“I feel like you’re being unnecessarily sarcastic,” he remarked with a raised brow. 

“Oh no, I think I’m being sarcastic just enough,” you said back. 

“So, what am I supposed to do about it? Welcome you back as if nothing happened?” you asked

“Like we didn’t fight each other for billions of years, witness many of our friends lose their lives, and get trapped away from home because the space bridge exploded. I remember quite clearly that you decided that I was your enemy when I refused to join your side,” you continued.

“I know that. And I know it's not something that could be easily mended. But we can’t fix anything if you keep avoiding me,” he stated.

“It’s not that simple, especially when I got used to the fact that you hated me,” you shook your helm.

“Hated you?” Megatron looked taken aback for a moment. “No. I never … hated you. I did think you were being blind, and I waited for you to see things my way, and possibly return to my side."

"Though, after everything, I realized I was the blind one the entire time," he muttered.

"But I never hated you for it," he said with clear conviction.

"Oh, really?" you asked, looking at him.

"Yes," he nodded.

"Well... tell me. What message were you sending when you broke the twin bond between us?" you asked, and he froze.

When he didn't answer, you decided to continue. “I can still remember that moment when your side of the bond went quiet, and all I could feel was frame-chilling coldness."

“I really thought you went offline,” you said. 

“And when I learned that you were alive and had the bond forcibly severed. I was… broken. Devastated that you, my own brother, would do something so horrible,” you said.

"And then… after years since that incident, you just suddenly switched sides. And now everyone keeps telling me to make up with you like it's that simple,” you threw your servos around in frustration.

“Is that why you had been avoiding me?” Megatron asked.

“I… admit that it was not one of my proudest decisions,” he said. 

“Then why did you do it?” you asked bluntly. 

“I… “ he hesitated. “I thought that by removing any constraints I had, I would not be held back."

“Oh, so, it would be easier to shoot me if I stood in front of your fusion cannon again?” you asked.

“What! No!” he answered.

“Well, that’s what it told me. That I was dead to you!” you exclaimed. “I mean, what kind of other message could it send?” 

“I couldn't get my helm out of the gutter for months. I spent weeks ridiculing myself for making wrong decisions in my life. Feeling ashamed and angry that I still felt any form of care toward you. Avoided fueling properly and nearly got myself killed in missions," you continued. "I couldn't tell anyone because the bots you had wronged could have taken it out on me. I can only thank Elita for knocking some sense into me and helping me get back on my feet."

"I stayed away from the field for a while because I feared you would actually kill me if our paths crossed again,” you said. 

"And worst of all, I came to accept it. That I was nothing to you, and the bond between us is gone for good," you added.

"Then you end up doing something like this!" You tossed your arms up again. "And everything's upside down again!"

"(Name)... I know I can't take back what I did. I know the twin bond between us is gone for good." Megatron spoke. "But I have opened my eyes and changed my ways."

“It’s not only that!" you pointed at him.

"You claim to have changed, yet you still fight with the same violence as in the war. You speak about giving chances, yet you ruthlessly take down your former people just because they're still Decepticons. You even boasted about it when we went on that mission," you explained.

"I still hate violence by the way."

"You might no longer attack humans, and even work with them, but the truth is, you haven't changed at all. Honestly, from what it looks like, you are running from the past," you added.

“How can I accept you back when you still act the same mech who had led this war on, and don't even look like you're trying to fix what you broke?" you asked.

Megatron frowned. “You speak about what I broke… yet you were the first to break us,” he said.

At that moment, all the anger and pain you had suppressed began pouring out. You tried to control it, looked away, and clenched your fists. Tears burned in your optics. With a controlled growl, you punched Megatron straight in the jaw.

Megatron grunted, stumbling back from the hit. You then tackled him to the ground, standing over him while holding the front of his chassis.

“Frag you, Dee!” you yelled at him. His optics widened when you used his former name. 

“I didn’t care that you were the Leader of the Decepticons! Even if it was you who led this war on, even if you had done countless crimes, even if you despised me. You were still my brother. Despite everything, I still cared. Your side of the bond going cold was the worst feeling I ever felt! “ you said, tears running down freely from your optics. 

Megatron’s stayed put, despite holding your arm back in an instinct.

“I wept, felt ashamed, believing everything I had done was wrong. And I couldn’t tell anyone about it. And I hated myself for it for still caring,” you continued.

"You hurt me in ways you can't even imagine!"

“And then you do something like this,” you added, punching the ground next to his helm, the rough soil cracking beneath your fist.

“Frag you, Dee! You are a primus damn son of a glitch. And I will never forgive you for all the slag you put me through,” you uttered, venting out the anger you felt. 

Instead of fighting, yelling, or hitting you back, Megatron laid his servo over your own. His optics softened. 

“(Name)... even if you don’t forgive me. Even if I apologize a hundred times…” he began, his tone quieter. “I'm really sorry… for all the pain I caused you.” 

You didn’t know what to say. Inside, you wanted to scream at him and beat him to the ground. You pushed yourself off him and looked away, trying to sort out your thoughts. You stayed silent for a moment before reaching your servo toward him.

Megatron looked confused for a moment. 

“Come on. Let’s go get some oil and talk things through like grown-ups,” you explained. Megatron then grabbed your servo, and you helped him up. 

After getting some oil from your hidden stash, you and Megatron sat down on some haypiles to look at the stars.

“I didn’t know you still mixed oils,” Megatron remarked. 

“With the war over, I have a lot of free time. How else do you think I earned those extra shanix during our miner days?” you questioned, opening one of your bottles and handing him one. “Don’t tell Optimus and the others, though; they will likely start pestering me to make some for them. I especially don’t want to risk the Terrains getting curious to try alcohol,” you added. 

He released a chuckle. “They are far too young for that.”

“Yet they’re rebellious enough to join dangerous missions, especially when told not to,” you pointed out. 

The silence hung for a moment before you both chuckled. 

“They have a whole life ahead of them,” Megatron said. 

"They are amazing..." You murmured.

Silence fell between you.

"So.... What now?" He asked.

You shrugged your shoulders. "I don't know, everything is a mess." You said, taking a sip from your oil. 

“Honestly… I thought you hated me when you started avoiding me.” Megatron revealed. 

You sighed. "I was upset for a time. But I was actually glad that you changed for the better,"

"Then why did you start avoiding me?" Megatron asked.

"Well, how would you exactly react when the twin who you had been fighting against for billions of years suddenly decided to change their ways and join your side?" You asked with a raised brow.

"Oh...good point," he uttered.

"I guess... I grew used to the roles built between us when I refused to join your side and the war," you said. “So, when you came back. I didn’t know how to act.” 

"I understand," he said. "But I really do wish things between us to be better, or at least good enough, to make you stop avoiding me," he added, making you snort.

"I wished that every day throughout the war..." you said, then exhaled. "Okay. I give you a chance," you decided, and Megatron looked hopeful for a moment.

"But I'm not gonna let you back into my life that easily. I still feel resentful for what you did. When it comes to trust, especially broken trust, it is not simply given or demanded; it's earned. You need to have patience and willingness to listen to do what is required,” you explained.

"I might not fully understand it yet. But I am willing to learn..." Megatron said. “Perhaps in this, I could follow your lead,” he suggested.

You softly smiled.

Megatron groaned after having a sip from his oil, moving his jaw which you punched. 

“Did I hit you too hard?” you asked. 

“Maybe just a little. For someone who hates violence, you sure know how to throw a punch,” he stated. 

“Just because I hate violence doesn't mean I wouldn’t learn how to defend myself,” you said. “And I will not apologize for it.”

“No need. I’ll say I deserved it,” Megatron said. 

“So… no longer avoiding me?” he asked with a hopeful tone. 

“Let’s see what the future will bring… I will make you work for my trust,” you said. 

“That is what I am willing to do,” he said. 

Silence fell between you as he drank, and you thought about things.  

You thought about the war and everything that had happened. Weirdly enough, letting your anger burst out actually kinda helped. It was honestly a surprise you suppressed so much. You probably shouldn't forgive him at all. In moral sense, at least. But after that little burst, you felt less angry and even hopeful for better days.

Your thoughts then fell onto your conjux and sparklings. It gave you a realization. After all these years, Megatron still has no idea about them.

You leaned toward Megatron. "You're an uncle now, by the way."

Megatron froze for a moment, processing what you just said. He then choked on his oil and began coughing.

"(NAME)!" he exclaimed after recovering from his coughing fit.

"What? It's been like eight billion years." You looked back at him. "Believe it or not, I found myself a conjux and had sparklings,"

“Who?” He asked. 

“Sorry. But you don’t have enough trust to acquire that information.” You bluntly said. 

He then softened. “Then can I ask how many?”

"Three," you answered. "Twin femmelings and one mechling,"

“Brats?” he asked. 

“Oh, you have no idea,” you chuckled. “The moment my twin girls learned how to walk, it was over for everyone. It was like they decided on world domination while their little sparks still orbited mine. My poor son often fell victim to their pranks.” 

Megatron softly laughed.

You then stared at the stars with a distant Look. "As Optimus needed my assistance, I convinced my conjux to take our little ones to live at a neutral colony, away from the war," you explained.

"I lost contact with them when we came to Earth." You added

Megatron listened.

"My sparklings must be in their teens now. I can still sense my conjux, so I have faith they are alive and safe." You said.

“But I miss them,” you added. 

Megatron laid a servo on your shoulder.

"Like Optimus would say, have faith. We never know what the future might bring. Maybe one day we end up finding a way to get back to Cybertron, and you'll reunite with your family," Megatron said. "I would like to meet them one day,” he added.

You smiled. "I hope so too,"

There was silence for a moment. Then.

"What!!" Thrash’s voice yelled from the barn. 

You and Megatron looked toward it.

"What do you mean (Name)'s married and has kids?!" Robbie followed.

“Ooh! Do you think we can get (Name) to show pictures of them?!” Hashtag’s voice followed. 

Then came loud shushing before silence. 

You and Megatron glanced at each other before silently laughing with a shake of your helm.

‘She’s too old for [Y/N], you know this.’ Mitsuki snaps, snapping on the box lid. ‘They’ll get bored if they have to sit in her living room all day.’

‘The place smells like shit too.’

‘Katsuki!’ This time she does hit him.

‘It’s just one day. All you have to do is keep them busy for a while, and they’ll find a way to occupy themselves for the rest of your classes.’

Mitsuki packs the bento box and several colouring books and pencil sets into a tiny school bag that’s been sitting open on the dining room table. Just as [Y/N] comes skipping into the room in an All-Might tracksuit that they demanded they ‘had to have’ when they saw it at a convention a while ago.

‘Aren’t you so pretty, hun?’ Mitsuki coos at - arguably - her favourite child. ‘Guess what?’

[Y/N] mumbles something around a mouthful of a soft pretzel. Where’d they even get it from?

‘You’re going to school with Katsuki today!’

Oh shit their face got a fuck ton more bright when he looked down again. Even the mention of U.A on any given day made them bounce around while babbling about how they’d love to be a hero when they got their quirk. 

‘Really?’ [Y/N] attaches themself to his leg, bouncing up and down to make sure they’ve heard Mitsuki just right.

She glares at him when [Y/N] looks away.

‘Yeah, yeah, whatever.’

No one’s expecting anything entirely different when Aizawa starts class that morning. The only thing that seems slightly out of the ordinary is Bakugo being late. Kirishima is counting through the minutes and soon enough a whole half hour passes without him being there to yell at anyone. Even Midoriya is having a particularly stress-free morning!

However, no one was expecting for him to parade into the class an hour later with a six year old sitting on his shoulders, because (as he said) “they didn’t want to use their damn legs”. 

‘Bakubro,’ Kaminari is already laughing his ass off in the back corner. ‘Ya got a hitchhiker there.’

Bakugo is almost fuming by the time he drops off the child at his desk, standing by Aizawa to demand - or ask - that he ignore the situation. Number one, [Y/N] got a day off school because of a downtown villain attack, and Mitsuki couldn’t find a babysitter after their current one caught the flu. With no other options and both of his parents going to work early that morning, he had no choice but to drag them along as long as, and quote:

‘You don’t make a damn noise, and no questions, and no playing around, you sit down and shut up.’

Did [Y/N] listen? Nope. Not really. 

Halfway through the first lesson of the morning, and little [Y/N] is sitting in the lap of half of his classmates, messing with Hagakure’s invisible hair in utter curiosity, and playing heroes with Midoriya and Kirishima. At which point they all stand on their desks and put their fists in the air yelling ‘Detroit Smash’!

Katsuki just stands and watches as [Y/N] jumps from person to person, playing with quirks and planning out their future hero name. Kaminari is the most excited to stand on his desk and create a fake hero mask out of tape and paper, and theorise all the new quirks that could be made for [Y/N].

‘[Y/N] sit down for God’s sake!’ he growls at them, and they do so as they nestle themselves into a corner of his desk. Katsuki squeezes on with her. ‘No more talking to these... damn extras during class, ok?’

Mitsuki would skin him alive if he even thought about swearing properly in the same room as her “precious angel”.

‘But why?’

‘’Cause it’s annoying.’

[Y/N]’s eyes widen a bit, but then they beam at him and nod again, picking up a pencil as if they actually are a student and begin doodling a picture while others begin homework. Aizawa doesn’t collapse into his sleeping bag this time, instead keeping an eye to ensure he isn’t sued later for the death of an unrelated child. Midoriya and Iida are the first ones to finish of course, followed by Katsuki, who has to steal his pages when [Y/N] isn’t looking, handing it across the teacher’s desk with glitter flowers and stars in the margins. 

The bell goes to signal the beginning of their hero training, and [Y/N] clutches Katsuki’s hand as they shyly approach the scary-looking racoon man to hand him a (“professionally signed”) artwork by [Y/N] Bakugo. A misshapen house with a cat and a very dead looking racoon. 

(Aizawa does frame it later, like a dad of course.)

(Katsuki does call his teacher roadkill exactly three times after that.)

For hero training All-Might stands with his hands on his hips with [Y/N] at his side to help conduct the lesson. Together they order drills and [Y/N] gets to practise their hero voice and pose. The class ends with the whole group playing games and kicking a soccer ball around so they can pretend that [Y/N] has to save it from various situations. Which they do so successfully - “a top-rate hero” in All-Might’s words.

For Katsuki, he’s glad to get home and die in bed when 8:30 rolls around. It’s been non-stop questions and poking and prodding even though he told [Y/N] not to, but they wouldn’t listen! And when they got home Mitsuki hounded him to make sure they hadn’t done anything stupid while at school. 

But 9 rolls around and [Y/N]’s socks cast shadows over the door frame, and the door handle jiggles. Katsuki waits and doesn’t move to help them with it. They come padding in with a stuffed Midnight plush, and crawls onto his pillow. 

‘Kat, can I come to school with you everyday?’

And god-fucking-dammit, they look so damn excited to go to school with their big brother that all he can do is turn off his lamp and pull the covers up and pat their hair. He can feel his chest swell with pride, because his sibling wants to come and watch him become a hero.

He can’t help but wonder what kind of hero [Y/N] will be. What would their quirk be? 

Oh, Mitsuki would kick his ass if he even thought about surpassing his own sibling.

He smirks at the thought. His sibling would be the best hero at U.A, not like those fucking extras. 

‘Yeah, whatever.’

i really enjoyed writing this!

Patrols can be both fun and frustrating. He will be overprotective, but try to crack jokes on a boring night.

He is responsible as much as he is fun, so when he sees you focused on the patrols or missions, he takes pride in that.

He is well aware that you can fight and kick ass on your own and won’t cut in to take that from you. He really only gets in the way if he feels like you are in danger or at a high risk.

If you get into an argument or fight with one of the other Batfam members, he lends an ear and tries to calm you down.

He knows your body language well and goes out of his way to check if you are okay or give you your favorite things to cheer you up.

He definitely builds blanket forts for him, you, and the other siblings. Full of lights, pillows, and lo-fi music.

When he moves to Blüdhaven, you are welcome to stay with him whenever you want. He is a phone call away, no matter what.

For major events in your life, he is there for you. From a prom night, to your 21st birthday, to bringing your partner over for the first time, he is there as your hype man.

When it comes to romantic advice, he’s a bit of an over-sharer, but he wants you to be happy and not be heartbroken by some jerk. He’ll give you his perspective and red and green flags.

In addition to relationship chats, he loves to hear about your crushes and/or partner.  Seeing you so passionate about someone is adorable and raw to him. He also takes it as a sign of trust.

When you get sick, he goes full mother-hen mode with Bruce and Alfred to take care of you. He will overreact, but it’s out of love

Same goes for if you are injured while on patrol. He goes into first aid mode and fusses over getting everything for you.

He is the dad of the group when it comes to snacks and feeding you. You will not go hungry with him around.

But he isn’t always fun and games. If you are getting too rowdy or rough, he will make sure to let you know.

When a plan of attack is in motion, he watches over you to be sure you do it right and safely.

He does not tolerate separating from the core values of the Batfam, but will not be as harsh as some of the other members.

If you are one of the vigilantes that takes more to violence or killing, he will show disapproval, but not hold it against you outside of the costume.

Overall, he cares for you a lot and will look after you, while still respecting your space and choices. A good big bro.

~ ~ ~ ~ ~

- He was a Vanyar prince, a beautiful one too, and around your age. You first saw him standing silently in a corner at a party, seemingly enjoying it from the sidelines. This really piqued your curiosity so you decided to approach him and start a conversation. 

- You two hit it off and decided to start seeing each other. Eventually, you fell for him and he fell for you, so you started courting. 

- However, due to your father’s negative views on the Vanyar and your brothers’s past shenanigans when it came to your quest for love, you agreed to keep your courtship a secret for the time being. Also to bid time for you to formulate a plan to get your father and family to accept your partner. 

- You did not like hiding things from your father and your twin, however, you were set on marrying your beloved even if he was a Vanyar. You have finally found what you wanted, and you are not going to give up on it, so you figured out a plan to have your family accept your partner by slowly introducing him to specific members of your family. 

- You decided to start with the safest option first, your mother. She already started suspecting something and when you told her about your partner, she was accepting and understanding enough to keep your courtship a secret. You introduced her to him in secret and she gave her approval. 

- You then decided to introduce him to your cousins, especially from your uncle Finarfin’s side, knowing they would give their approval without a hassle. They became friends with your partner and promised to keep it a secret. 

- You figured out that having your partner become friends with your cousins would pave an easier way for your brothers, so you then introduced him to the most calm-headed pair of your brothers, Maedhros and Maglor. 

- You introduced your partner as a friend at first and they were accepting of him, though Maedhros was quick to notice that something was off. He had always been aware when you were up to something so in the end you revealed the truth after a day of getting to know each other and that you had been courting your partner for some time now. 

- He complimented how cleverly you had him and Maglor to get to know your partner, and deemed your partner good enough. Maglor was a bit dramatic about the scheme but gave his approval. 

- You then turned your attention toward Celegorm and Ambarussa. You introduced your partner to them by joining them on a hunting trip with a couple of your cousins. Celegorm had always been a rebel when it came to your father, so when you revealed your Vanyar friend was actually your partner, he gave his approval also because he found the idea of you courting a Vanyar and your father being angry about it amusing. Ambarussa teased you relentlessly when they learned but after getting to know your partner, they approved him. 

- At that point, you already have half of your family in your favor. As an additional backup, you went to your grandfather to reveal you were seeing someone, who was both a Vanyar and a royal. He was pleased about it and promised to give his support in case your father tries to oppose your option of marrying your partner. 

- Now that you have secured your family’s support, you introduced your partner to your father and twin. 

- You decided to take the safe option and introduce your partner as a friend first. Caranthir was calm about it and even though your father looked at him suspiciously, they suspected nothing and allowed your partner to be. 

- You then let it go on for some time, trying to get them used to his presence. Having your partner be friends with most of your brothers worked in your favor and they no longer looked at him like a stranger. After some time after, it looked like they were ready to hear about your courtship. 

- However, knowing their temper, you decided to play it safely and claim you started courting your partner sometime later. 

- Caranthir felt displeased but voiced little opposition. Your father gave his opinion about the affair but backed down when you said how much you liked your partner and when your grandfather added how perfect you two were for each other. He always had a soft spot for you and with your grandfather giving his approval, he begrudgingly accepted your partner and the fact you were courting someone. 

- And thus, your relationship with your partner was secured. You decided to keep it a secret that you had been courting longer than your father knew because if he knew, he would have shown anger unlike any other. 

- Time passed forward, and after your courtship, you married your Vanyar prince and were expecting your first child. 

- You were kinda worried as you had heard about your mother’s rough pregnancies, but thanks to the assurance of your husband and the support of your family, your pregnancy went smoothly and you gave birth to your son. 

- The labor was rough, your father was especially dead worried that something would happen to you like what happened with his mother, but fortunately, you endured the labor and he got to meet his grandson. 

- Your son was just the cutest little thing. But it seemed, he decided to skip sharing your and your husband's looks and look like your father instead with your mother’s permanent blush. It didn’t matter. You two loved him regardless. 

- However, it became evident that he inherited his grandfather’s temper. 

- Your son would start crying and screaming if he was held by anyone except you and your husband. He did not like being held by strangers, even by your brothers. He did tolerate your parents and on one occasion he mimicked your father and sent a nasty look toward your uncles and cousins when they came to meet the new member of your family. It definitely looked like you gave birth to another Feanor. 

- With your family’s support, your journey to parenthood started easily. Curufin was glad Tyelpe had a cousin to play with. 

just. a maniacal streak of pink and yellow.

they don't know peace because of you. (affectionate!)

like they will be mindin' their whole business in its entirety and here you come

"*walks into the main living room* heeeeeyy, anybody seen my jupiter jim issue— [*nyooom!*] SWEET MOTHER OF G O D–"

it's not like you ever have ill intentions, tho 🥹 so it's okay.

"they're cute so it's okay!" — all of your siblings at one point, probably

while they do accept your golden retriever tendencies, it be givin' them gray hairs fr 💀✋

especially because you're so f a s t

you're there one moment then next thing they know you're halfway across the entire lair, tittering and chirping happily away.

˙🍋 ̟ !! ─ so, over the course of your life, they've all developed their own designated role when keeping up with you:

raph . . .

being the oldest definitely feels the most responsible for you and acts on it! he himself has developed a sixth sense for when you zoom by and can catch you with (relative) ease every time, and has definitely saved your butt from like. accidentally crashing into a wall or smth sjsjsj

but big bubba can't prevent everything :\ so you have gotten some owies !!

but you can always count on him to be there to help you feel better.

he's your biggest bro 🥹 he always makes you feel better.

but i imagine u're also a maniacal little shit (*cough* thanks leo *COUGH*)

so sometimes you just, str8 up run away from him like ACTIVELY escape his grasp

it deffo takes some effort 😮‍💨 (petition : #saveraphfromhissiblings /lh)

"[NAME]?! Get back here, you little speed monster!!"

*cue toiny baby gecko squealing and The Daily Chase commencement*

oh yeah. it's a daily occurrence.

you stress him out 🤣😭 but it's okay. :))

(after catching you in his hands, holding you up to eye level): "Alright, you little goober. That's enough outta ya today." "But Raaaaph!!"

and then you can't really do anything because raph knows your sweet spot, your little switch, that melts you like putty - a little patch riiiight in the center of your upper back, a well-pressurized scritch is all it takes really, and oh. there we go. down for a nap !

however you simply must have your grand rebellion moments and give him arm gummy bites the entire time but he's the just personification of "😇😌"

ain't no doubting he loves you tho. adores you, really; your bright bubbliness is what makes him smile most days, and even tho your energy is a bit much for him to keep up with, and he'd really like it if you stopped fighting him for afternoon naps sometimes, i don't think he'd change it for the world.

leo . . .

is one who's fairly on par with your hyperactivity, so he's the one we all turn to when your excitement is bubbling over into something a liiiiittle too much :'))

playing tag when you're zooming to and fro is one of you guys' favorites.

but sometimes he doesn't play fair and uses his odachi to teleport >:((

and if you get genuinely upset, he just scoops you up and blows raspberries on your soft lil tummy.

he's the only one who can wear you out so he's an essential part of everyone's lives asksksjd

but bc of this

HE PROBABLY USES YOU AS COLLATERAL TO GET THINGS HE WANTS I'M NOT EVEN PLAYIN

"LEO!!! Ugghhghhh, can you please handle them?!"

"Mmmhmmmmmmm....."

"L E O ಠಗಠ! For the last time, you are NOT choosing for movie night tonight and the kind of pizza!! You've had it all week!!!"

"Ohh, suddenly I have no capability for one very specific baby cotton candy-banana pudding gecko..... Shame. Woeful, horrible, terrible, shame—"

"LEO!!!"

he's a jerk, but he's highkey your idol and he would give the entire world for you in a heartbeat, so :))

donnie . . .

acts like your hyperactivity is an inconvenience...... but in reality, he doesn't mind it.

(only when it compromises his tech. you've only had one to two incidents involving his lab before permanent damage control was done and it's been this way ever since. 😭✋)

sure, sometimes your wild nature can make him cringe on bad days, but what's a sibling if they don't get tired of your antics once every while?

it's healthy development !!

plus. he himself has his moments where his lowkey descent into madness shows its peak, so he can't really talk.

you've all got your quirks, y'know? (/ref)

in truth he accepts it as a part of you, and he loves all of you - i mean c'mon, you're his baby sibling.

and even tho he doesn't openly admit it nearly as much as the rest of your family - he really does think you're adorable.

and in more truth: donnie takes care of you a lot. like- as soon as you started showing signs of your speediness and just-consumed-five-bags-of-candy excitement levels, he completely baby proofed the lair 😭

and you can't tell me he didn't know you'd possess those superhuman levels of speed bro you CAN'T

that man is a scientist and he leaves no stone unturned, especially when it comes to his family.

he has you microchipped too sjjsjdh

[ i just thought of this just now, actually: he and leo are a team when it comes down to your genetics/biological health. donnie researches with his stem-augmented brain and studies your dna down to the very microfiber; leo adapts with his medical affinities to make sure you're the healthiest little gecko mutant kiddo you can be. <3 ]

WE MAY HAVE MADE FUN OF HIM AT THE MOMENT, because how much harm can one baby gecko do Donnie you silly fool honhonhonhon BUT HE'S THE ONLY 👏 ONE 👏 WHO CAME IN CLUTCH.

very much "who's laughing now?"

certainly donnie. my bet's on donnie.

"THEY ALL LAUGHED. THEY CALLED ME A SILLY FOOL. BUT FEAST YOUR EYES, BRETHREN. EATETH THY WORDS!!" "..... Raphie! Bonbon's doin' that crazy scientist shtick again!!" "[NAME]. >:("

on another note, i feel donnie would extend that branch of 'baby-proofing' and relate it to the gift he created for you. [ ref: s1/ep2 — "donnie's gifts" ]

maybe it was something like . . . a malleable sludge, some sort of putty, that melded perfectly over your legs whenever you were starting to get too speedy.

you were initially excited over the cute little metal band anklets gifted to you by your older brother, buuut once it activated .... :((

it made you big sads. :((

being a little speedykins was your most defining trait !! why would donbon try to take that away from you?? :(( donnie :((( donbon why :(((

.... what you don't know, (and me either tbh, we never got that 'explanation' from the inventor himself), is that donnie made it with your specs in mind.

geckos are able to climb vertical surfaces (with some exceptions of course, but for the most part !!) — when activated, those little "putty bands" would've aided in that.

because donnie knows how much you love to run around, especially climbing up the walls, but you can't stick up there forever.

was it made to simultaneously slow your ass down? yes. 🤣😭

(he's only one man what do you want from the poor guy ☠✋ your drive by's were enough to send him into cardiac arrest every time)

...... was it made to adhere to nearly any and every surface texture known to man & mutant kind? for an unprecedented amount of time? with the intentions of you having so much fun with it? also yes.

was it made with intricate care and with, overall, your best interests at heart?

yes.

but after the whole ordeal, he really did mean it when he says you're great just the way you are. :))

in your calmer moments, he likes to have you wrap around his shoulders like a fashion designer scarf and taps at your cute little tail, half as a stim, half as a gesture of affection, while he's in the lab focusing on his latest project

or even just. vibing. y'all are primetime vibey.

he finds your weight comforting. like a tiny weighted pillow.

and he'll never admit that he feels his heart nearly burst with love and pure fondness when you yourself happily curl up into your brother and fall asleep there, cooing softly into his ear.

he built a little comfort bed/pillow extension for you in his battle shell for such occasions <3

but he prefers the sibling cuddles without his shell on.

he trusts you, after all.

(i will never financially recover from this aksjddh SOBBING)

mikey . . .

is exceptionally good at matching all of your moods: your bubbly hyperactivity and bringing you to a calmer, serene state !!

how does he do it. 🧍

he catches you in his arms and strokes/scratches your back to calm you down, and it works like a charm every time !

he never has to use dr. delicate touch on you. despite being the closest in age, surprisingly, you listen to mikey very well !

call it survivor's intuition 🫠 orrrr just the fact that you and mikey are very close and in-tune with one another,

whenever he calls it quits for you - no matter how much you might whine and pout - you genuinely do tone it down.

i know i said this for leo too but i feel like mikey just has that magic touch. yenno?

no pun intended. ha.

but en ee wayz !! yusssss, mikey and [name] are the cutest little goobers.

y'all deffo get roped together being the "babies" of the family,

and despite mikey wanting to outfit that mold — mostly by means of appeasing to raph's overprotective tendencies — he babies you a bit too !!

you like to poke fun. you're observant, clever little thing. you call mikey out on it, going so far as to call him a hypocrite,

and whether you guys have a serious discussion or not is completely up to you !

but for the time being he just pets your head and affectionately tells you to hush, and keeps right on babying you.

he likes being your older brother !! so sue him !!

dynamics change the older you guys get =] so who knows what the future has in store?

you're one of his favorite muses. your color palette never fails to strike inspiration within him 🎨✨

when he catches your pink n' yellow blur in passing, he can come up with an entire idea for murals to tag around, don't play w him

he likes to do body paint on you too !! :))

(completely safe + free of harmful chemicals wbk)

probably makes flowers out of your polka dots (he definitely calls them that) or connects them to make a bigger picture.

he made an entire field of flowers and koi fish pond encompassing your back one time and you absolutely loved it.

you'll always be his little muse 💔

"[Nameeee]!!~ C'mere, polka dot! You wanna see if I can make a constellation this time?" "YAY!!!!" "Wait- waitwaitWAITWAIT SLOW DOWN—" [ *cue wii bowling ball strike sound sequence* ]

˙🍋 ̟ !! ─ ahaaa. overall, you're their cute little ball of sunshine. their little sugar carnival. their little pink bubblegum and banana laffy taffy gecko baby! and — while you being.... you, can get just shy of unbearable sometimes, they wouldn't trade you for this world and all the others.

after all, what's a family if you don't accept every part of them? no matter how exhausting it is. <3 you're a handful, but that's why you've got six pairs. and as the years go on, it only grows.

@chachachannah + @sweetparty for the dividers 🩷 @cureqt for the cute emoji combo 💛 & pinterest for the pictures! [the collage is by me!!] 🥰

⟆ ˙🍋 ̟ !! ─ further author notes . . .

™ : as always, susceptible to future editing for grammatical/formatting corrections !!

i absolutely loveddd writing this!! and for the intricacy, this is the quickest i've ever pulled a request-bun fresh from the oven!! :o kudos to you, fluffy! <3 i do hope you like this as much as i did aaaa!! now i've got polka dot gecko sibling brainrot. 🥴 it's true: you never know it's a good idea until it's presented to you !!

a couple of fun facts: "sugar carnival" is a term coined by me, in reference to one of my free verse poems a while back! i, also, consider myself a sugar carnival being at most times ˶ᵔᗜ ᵔ˶ & i came up with the title on the spot after hearing + envisioning "pink gecko with yellow spots". ideal color combo, criminally underrated. fluffy your brain deserves a pedestal and i will personally create it for you with my bare hands.✋🩷💛

╰┈➤ tues. jan 23, 9:18 pm, '24.