Chapter Text
It’s stupid but then again, they might be heroes-in-training but they’re all also teenagers so it was only a matter of time before something like this happened.
“Hey ghosts it’s me, ya boy Kaminari.” Kaminari said out of nowhere one night after dinner when everyone had finished dinner and were hanging around the common room.
A mirror on the wall frosted over and words began being written in sloppy handwriting.
“I… know” Jirou read out, and Kaminari turned bright red.
“I didn’t think the dorms were actually haunted!” He exclaimed, looking completely terrified to those who couldn't see through it.
More words got written.
“Not… dorms… just… little brother.” Asui read, and the boys in class got suspicious looks (it was warranted, one of them was apparently haunted by a dead older sibling).
“Um… what the fuck?” Jirou put it eloquently.
“Watch… your… language… you… little… shit.” Ashido read, trying not to laugh by the end of it.
“Um… ghost person? Could you tell us what you want to be called and what your pronouns are, please?” Ojiro asked as politely as he could.
Little brother called me Big Sister. I do not want to use my name because names have power was written on the mirror.
One of the boys in class had an older sister, who was now dead. And almost nothing was known about most families in the class. Yaoyorozu, Todoroki, and Iida were the only ones that had extremely public families after all.
“Um… Big Sister-san? Could you help us narrow down who you’re talking about?” Yaoyorozu asked the ghost in question politely.
Not Todo-kun. Yama-chan is still alive. Suki-kun is only child. Little brother thinks Tape-kun and Bird-kun are A-rate emos and Stone-kun is best boi The ghost, Big Sister, wrote before clearing the mirror and frosting over it again.
“Well, at least those people are eliminated in the running for the ghost lady’s brother.” Uraraka said, looking on the bright side.
“Big Sister-san? Could- do you think you might be able to show us what you look like somehow?” Satou asked, trying not to upset the ghost.
My ability lets me but I don’t want to scare you, little brother will be sad if I scare you The ghost wrote on the mirror, and a few students winced.
“We can fucking handle it.” Bakugou snapped.
There was a flicker by the mirror, and little by little a girl appeared near it. She was barefoot, with hair that was some sort of dark colour (it was hard to tell what colour specifically with all the blood and dirt), eyes that might have once been a beautiful colour but were now blank white, and her face… her face could have belonged to someone beautiful once, but it was disfigured horribly with terrible slash marks and what could have been burns all over.
The ghost waved, and it revealed bones sticking out of her arm and burns covering the skin under her clothing. Her hair fell to her waist, and the ghost looked about eleven to fourteen at the oldest.
“Who did this to you?” Iida asked, sounding like he was either about to break down in tears or scream in rage for this child who should never have died.
They thought I was Quirkless The ghost signed, her fingers moving clumsily around miniscule scars and burns that limited her mobility.
“That doesn’t excuse any of it, miss.” Uraraka told her firmly, and Big Sister shook her head.
This is what happens to actual Quirkless people, why does it matter that I only had to die to realise what my full ability is? Big Sister asked, and the horror that filled the room with that information was palpable.
“Big Sister-san, may you please tell us who you were?” Shouji asked, his arm-eyes looking the girl over in worry.
My name was She started to sign, then froze, flickered like an old TV that had terrible reception, and went back into focus. It was She paused like she wasn’t sure for a moment, flickering again for a second or two It started with an M or maybe an R.
“No it didn’t.” Midoriya said matter-of-factly, the first words he’d spoken since Big Sister had revealed herself. “Your name was Sumiye.”
No one wanted to ask how the green-haired boy knew that so easily.
The ghost girl, Sumiye, grinned and signed with her clumsy fingers Knew I could count on little brother to remember my name if I had trouble.
It gave an answer but left even more questions. Midoriya had had an older sister, who was now haunting him.
“Sumiye-san, what exactly happened to you, if you don’t mind telling us?” Tokoyami asked, feeling like it might give answers as to why Midoriya was so tightlipped about his family and what his life was like before he got into Yuuei’s hero course.
Little brother's father had fire Quirk and had his very bad friends help him hurt me and make it hurt very much. I am glad he left Mama and little brother because he was very angry and very loud and Mama was scared and none of us were safe when little brother's father was around. I do not like Endeavor because he is too much like little brother's father and he is a very big bully and mean and makes people cry Sumiye signed, bloody tears filling blank eyes as she signed.
Midoriya gave a miniscule flinch at the mention of his father, a hand moving to rub absently at a scar that looked far too old to be from training during 1-A’s Foundational Heroics classes.
“So… at least now we have a reason for Mido-kun’s father not being in the picture?” Kaminari tried to lighten the mood.
Sumiye gave a near-silent laugh and somersaulted in the air, a grin stretching across her burned face and making dimples appear on her unscarred cheekbones as her dress fluttered.
“Sumiye-chan, you took longer than I expected to mess with everyone, by the way. I thought for sure someone would start freaking about the dorms being haunted by the first week.” Midoriya gave a wry and fond smile to his dead sister, and Sumiye gained a viciously mischievous glint in her blank eyes.
The ghost made hand movements that weren’t sign language, and some things on the table lifted into the air. Sumiye’s eyes gained an indistinct iris and pupil, and her injuries appeared to vanish a little, or at least lessen in intensity.
“My ability let me interact with the dead when I was alive, and now that I’m dead it lets me interact with the living. Don’t worry, little brother is not like me in that way. He is more like Mama, it is why he is green.” Sumiye spoke, her injuries disappearing more and more and her appearance becoming ever clearer until it was as if she had always been visible and had never been injured.
Sumiye had near-shining bright blue eyes with pale lavender pupils and long wavy ash-grey hair, and 1-A was filled with an urge to protect this child who was already dead.
“I am glad that little brother has people like us in class with him.” The ghost child smiled at the group.
“People like you?” Iida questioned, and Sumiye nodded with a bright grin.
“It is nice to see they couldn't get rid of us all, little brother is happier now than he ever was when they thought we were useless because we didn’t have what they did.” Sumiye smiled, and most of the class was confused.
“What do you mean by that exactly, Sumiye-san?” Uraraka asked, and the girl in question raised a finger to her lips.
“Will not tell others’ secrets. Cannot lie when asked, only halflings can lie.” She told them instead, leaving even more confusion.
“Wait, does that mean-?” Bakugou asked, looking at people who weren’t Midoriya with suspicion in his eyes.
“Like us like us.” Sumiye chanted softly, grinning and moving to sit next to her brother.
“Midoriya-kun, what does your sister mean by saying you are like your mother?” Yaoyorozu asked, heeding the girl’s words and phrasing her question in such a way only his secret would be revealed.
“Probably that we both have green hair and eyes.” Midoriya said, not looking any of them in the eye.
“Tell them the truth, nerd.” Bakugou rolled amber-red-orange eyes.
“My mother and I are both kodama, but I’m only half.” The greenet admitted, looking like he wanted to be anywhere else.
“Like the faerie people?” Sero asked, looking like he was about to laugh.
“You really think Deku being green has abso-fucking-lutely nothing to do with him and Auntie being fae?” Bakugou snarked, surprisingly in defense of the classmate he was always so against.
“Well then if Midobro and his mom are fae then shouldn’t Sumiye-san be one too?” Kirishima asked.
“She is.” Bakugou, Kaminari, Shinsou, and Midoriya spoke in unison, freaking out several of their classmates.
“Sumiye-san, may you please tell us what sort of fae you are?” Shouji asked, and the ghost girl in question grinned.
“I’m a zashiki warashi!” She told them with a mouth that was suddenly full of too-sharp teeth. “Mama and little brother are happy that I am because it means I did not need a tree to come back after what the very bad men did.”
“Fuckin’ truth-tellin little shit.” Bakugou muttered, and the two fae siblings sent him matching looks of dry anger.
“I’m literally the only fair-folk here that we know of who can lie, Kacchan. Be glad I’m not fully-blooded like you.” Midoriya said flatly, and Bakugou gave a near-inivisible flinch at the threat lying beneath the kodama’s words.
“Wait what?” Sero blinked, a confused smile frozen on his face as he tried to process that someone in his friend group was decidedly not human, and that there were more not humans in the class.
“Um… surprise?” Kaminari had the audacity to look sheepish as pings of static electricity flittered across his wings- wait, since when did Kaminari have wings?
“Um… Kamibro, you have wings.” Kirishima decided to inform him.
“Shit, didn’t realise I dropped the glamour over them.” Kaminari bit his lip.
“Should we all just drop the glamours then, since the cat’s out of the bag?” Shinsou asked from his spot on Sumiye’s other side.
“Might as well, it’s been getting fucking annoying having to pretend we’re human.” Bakugou grumbled, then there was a flicker around him and his skin turned a fiery-orange colour, his pupils changed to slits, while his ears ended in a very sharp point instead of being rounded, and his hair stayed spiky but turned a bright fiery yellow instead of the muted blond it had been.
Kaminari shrugged and dropped the rest of his own glamour, his wings becoming more pronounced, his skin turning light blue and lightning flickering beneath, while his eyes became an electric blue and his pupils changed to look like miniature thunder bolts, his ears became just as pointed as Bakugou’s.
“What the fu-” Uraraka started to exclaim.
“Language!” Iida interrupted, his trademark arm-chopping motion cutting the air in front of her.
“Nerd, drop yours.” Bakugou told Midoriya, narrowing slit-pupiled eyes slightly.
“You know I hate looking even remotely like my father, Kacchan.” Midoriya replied in a deadpan, green eyes flat as a wall of moss.
“Don’t make me use your Name, Deku.” Bakugou retorted, and Midoriya sighed before the air around him seemed to shimmer.
His eyes became ice blue with green diamond pupils, hair turning straight-wavy and crimson red, freckles turning from black to green then multiplying along his cheeks and nose, skin turning paler, ears turning pointed, and green nature-like markings appearing across his temples.
“... Oh.” Todoroki mumbled, the left side of his body beginning to smoke faintly.
“I- you’re very, um, beautiful Midoriya-kun.” Ojiro stuttered, cheeks turning red.
Midoriya blushed at the compliment, his cheeks tinging a pale green as the now red-haired boy ducked his head and mumbled something.
“Most of us dropped ours, it’s your turn.” Kaminari grinned at Shinsou, revealing pointed teeth and a serpent’s tongue.
“Fine.” The teen rolled his eyes, then his skin gained shiny purple scales that ran along his cheekbones like angry scratch marks, his eyes turned a hypnotic blue-purple instead of being just purple, his pupils turned into slits like Bakugou’s, his hair turned a silky-looking dark purple, his ears became even more pointed than the other fae’s, and his skin became paler. “Happy?”
“Very much so, babe.” Kaminari replied, blue eyes lighting up - literally - as he looked the other up and down.
“I was not aware you two were together.” Yaoyorozu commented, completely unbothered by the changes that occurred with her classmates.
“We’re, um, we’re actually married by Other standards.” Shinsou mumbled, rubbing the back of his neck subconsciously.
“Wait, you two went and got Other married without inviting me?” Midoriya said, pouting as Sumiye began playing with his hair.
“You two are married?” Sero asked incredulously, looking between his friend and the purple-haired fae.
“Well, we’re old enough by the standards of our kind.” Kaminari shrugged with a smile.
“Our mothers planned the wedding after they caught us at the lake.” Shinsou admitted, ducking his head in embarrassment.
“Gross!” Ashido pretended to gag.
“What’s wrong with cuddling?” Kaminari made a face at her, and Ashido froze mid-gag.
“Shinsou-san made it sound like you were doing something very different from cuddling, kero.” Asui said, and Kaminari’s cheeks turned a slightly darker blue than the rest of his skin - which very immediately became obvious was how the boy blushed naturally.
“Neither of us like… that.” Kaminari said, finding a way to talk about it without using the actual word itself.
“You’re so awkward Kami-kun it’s actually a bit painful to watch. Falling asleep isn’t anything to be embarrassed about.” Sumiye smiled reassuringly at the blond, and a few of the students in 1-A facepalmed.
“Sis, that’s not what Ashido-chan thought they meant.” Midoriya told his sister, who sighed and pouted a little.
"Why do humans always go to that when someone says something?" The grey-haired girl whined, crossing her arms and slouching against the couch irritably.