hiii i found your acc under the tougen anki tag (where is the fandom 😭😭😭😭) so i was wondering if you’re taking requests for it—
fem!reader who is shiki’s twin sister (identical/not—your wish) and she has the water ability of the kishin’s child thing
the req is basically her x kougasaki (jin)! it can be set in literally any point of the anime (i haven’t read the manga yet 😭🙏)
literally anyyyy angst/hurt&comfort followed by fluff would be crazy 😛🩷
it’s totally fine if you end up not writing it or if you’re a bit busy too, dw 💪🫶 have a good day!
girl ik the fandom is so dedge BUT I SHALL BE THE FIRST OF MANY TRUST TRUST!!! but i gotchu i gotchuuu sorry if its late ive been goin through it LMFAOOO i hope you enjoy tho mwah mwah!! also hope you don't mind i aged them up in an au (roughly 2-3 years after the current events has passed)
a/n; i had SOSOSOSOSOSO MUCH FUNN WRITING THIS!! I HOPE U GUYS ENJOY AND TYTY FOR THE REQUEST!! also i own none of the art above, credit to all the artists <3 btw i was BAWLING at the end icl icl lmaooo
warnings; angst/hurt, details of blood/stabbing, mentioned use of blood (because of their abilities), probably spoilers? unless you've watched the whole thing then no spoilers! also fluff! and kissing
wc; 3,613
synopsis; shiki ichinose has a twin sister, one that no one knew about for 20 years, until she shows up one day beaten an bruised. mudano takes her under his wing and she begins to train at the university-like base, alongside a bunch of peers, jin kougasaki one among the 7 of them. it was almost like love at first sight, for both of them. but, what's love without obstacles?
"Exhale.."
[name] ichinose, the twin sister of shiki ichinose. like her brother has the ability of fire, she possesses the ability of water. the fire and water kishin, shiki and [name]. to be honest, no one knew shiki even had siblings, not even himself. they were separated at birth after all. she had shown up one day, beaten and bruised by a member of the momotaro agency, like they all were. mudano was the one who found her, of course. it was his job after all. he sent her to the closest oni base to get a medical exam done, to make sure all of her vitals were alright and whatnot. when she finally stirred awake, she was met with the piercing gaze of the very man who had saved her.
“naito mudano,” he said, extending his hand for you to shake. you hesitated but grabbed his hand nonetheless. “[name] ichinose. nice to meet you.” you said, voice a bit scratchy. “ichinose, huh? you know someone name shiki?” your eyes widened at the name. your… ‘parents’ mentioned him when they told you about your oni identity. he was apparently your twin brother, and since they didn’t want much to do with you they had given you his last name instead of theirs. you’d always thought that was a dickish move but you hardly had the energy to care. “h-he’s my twin brother, though i’ve never met him personally.” the man just stared at you, seemingly lost in thought.
“yo-hoo~ i’m back with goodi- oh my, she’s awake!” you stared at the door as a pink haired man entered with a plastic bag full of things. you saw something that caught your eye; pudding. god, how you loved pudding. you couldn’t stop your tongue from darting out of your mouth to catch the drool escaping. “oh? someone’s hungry, i presume?” the pink haired guy says, reaching into the bag and pulling out the very thing you were staring at. you scrambled to catch it as he threw it up in the air, the machine connecting the needle in your arm causing a loud rattle as it fell to the ground. “careful, girly. those machines are expensive,” he frowned, passing the bag onto his, well what you assumed to be was, his colleague.
he picked up the machine, grabbing your arm to check for damage around the needle insertion site. ‘none at all, good.’ he thought. you just sighed, not wanting anyone to know you could read minds just yet. you let him examine you while you ate the pudding cup one-handed. you finished the dessert in a few moments, throwing it inside of the trashcan beside the bed after. “she seems fine, mudano. the tests you wanted are still being run but…” “you feel it, right? how it felt around shiki?” the pink haired guy nodded, both of them staring back at you to find you staring at them with a deadpan face. “you guys do this alot? talk about people like they’re not literally in the room?”
mudano was about to speak, but got interrupted by the sound of the door banging open. two guys walked in, one who was the spitting image of you. “speak of the oni,” said the pink haired guy. you were staring. staring at the boy with washed blonde hair and a face mask. you always had a thing for mysterious guys, but this is a whole new level. they both wore what looked to be a school’s uniform, but you hardly paid any attention to the blue haired one. your eyes scanned his body, stopping at the gloves that adorned his hands so perfectly. your heart was racing, the sound of the machine blaring as your heart rate climbed higher and higher.
“oh? someone’s blushing,” the pink haired guy let out a loud laugh, snapping you out of your trance. you looked away, a pout on your blushing face. “woah,” you turned back to one of the guys in your face. “you look scarily like me, but a girl. are we like long lost twins or somethin’?” said the boy with blue hair. “that’s what we’re trying to figure out, shiki. get out of her face.” says mudano, a bored expression on his face. you all made some sort of conversation while waiting for some sort of ‘test,’ or whatever. you’d learnt the names of the other two, jin kougasaki and kyoya oiranzaka.
“so, where’d you come from?” kougasaki spoke, golden eyes staring straight into yours. your heart fluttered as you looked away, “i um…i don’t remember. someone was chasing me, and then i blacked out,” you said, a somber tone in your voice. the door opened once more, and the doctor, kyoya, came back with a few papers in his hands. “it’s her, the water kishin. and the dna test also came back positive. you two are twins.” you stared at the wide eyed brother of yours. you can’t exactly say you were surprised, as you had already knew you were related prior to even meeting. “well, [name], i’d like to invite you to come back with us. we can teach you to control your blood and-” “okay. i’ll go,” you said, not caring enough to hear the rest of what he has to say.
the walk back to the school was quiet for you, as you were lost in thought. you followed close behind as you thought about the thought of controlling your own blood. you’d already known you were an oni before meeting mudano. while you didn’t lie about blacking you, you did remember fighting beforehand. your blood weapons of choices were swords. it only made sense, your… ‘dad’ was a samurai after all. you had poor control over the types of blades you produced, and the quality of them. that infuriated you beyond belief. you’d always wished that you could just be naturally gifted. always wished that you could just do it without needing help–without needing to train–but you knew that was never gonna happen.
you’d reached the school after about 30 minutes of walking and a long boat ride. you didn’t really pay much attention to anything until you walked into a classroom. you looked around, spotting 5 different faces. one of the girls was hugging up on a guy, who looked as though he’d much rather be anywhere else than there. a girl with pink hair who looked as though she was about to cry. some guy who looked like the embodiment of the word dork, and some guy who looked like your classic textbook bully. you knew they were all adults from the conversation at the oni base, but, man, they seemed like a bunch of high school children. you ignored all of the noise, walking past everyone and situating yourself in the very back row, in the left corner. closest to the only other door in the room.
you’d noticed the room got quiet, everyone’s gazes on you before they turned their attention to the front of the room, and back on you. this exchange went on for a few more times before mudano spoke, “class, we have a new student. [name] ichinose. shiki’s twin sister.” the class erupted in gasps and yelling, which you then blocked out with the pair of earbuds in your pocket. mudano handed them to you on the boat ride after noticing you seemed bored.
you felt a tap on your shoulder, kougasaki sitting beside you. you blushed at the proximity, taking out one of your earbuds. “y-yeah? wha-” he placed a pen in front of you, his gloved hand lingering over it for a second longer than you had wished. he then tore a piece of paper from his notebook, holding it out for you to grab. you reached for his, your finger grazing his accidentally. “thanks, kougasaki.” you said, looking down at the paper, too nervous to meet his gaze any longer.
the content of the class proved your suspicions. they taught strictly everything about oni, you’d learnt you and your brother were each one of the five kishin, water and fire respectively. you kind of thought it was ironic, but you kept quiet, opting to just take notes on everything and ask questions later.
but, later turned out to be physical training, and since everyone has been here far longer, all the attention was all on you. you were asked to demonstrate your oni weapons of choice, in front of everyone. it made you feel awful, if you were being honest. you hated being the centre of attention. but, you had to do it. so, you pulled your hoodie off, gasps filling the space as everyone saw the scars. two long scars that ran along the sides of your stomach. you opened them up, gripping the blood as it formed into a pair of twin blades. the scars quickly closed due to your regenerative powers.
“hm…impressive. you’ve done this before haven’t you?” busted so soon, huh? you didn’t bother responding with words, opting to just nod your head instead. you were paired up to train with the bully looking guy, whose name you found out to be yoaroshi.
you’d learnt that his blood was just as unpredictable as yours, if not more. at least, yours only changes daily. you’d pulled out around 10 swords in total until you could finally beat the guy.
you both were left bloody and breathless, but with each pair of swords you pulled out you could feel yourself getting stronger, each one had higher durability than the last, you’d noticed. “well, that was eventful. how about you guys come and rest while you watch the rest of them spar?” you were offered a hand up by yoaroshi. you stared up at him, a scowl on your face as you stood up on your own, brushing off the dirt from your shorts. You walked over, taking a seat next to your brother. “good job, sis. i knew you could beat that loser!” shiki said, sticking out his tongue to the other boy in question. “loser? oh, i’ll show you loser!”
you sighed as things escalated, mudano hitting them both with that umbrella he carried around before things got far. “can you guys seriously not go 5 minutes without fighting? talk about immature..” you looked beside you, staring at kougasaki as he rolled his eyes. “eh? m-me? immature??? hah! mudano i wanna pair with this guy!” said shiki. you could’ve sworn you’d heard kougasaki smile at shiki’s words.
and that’s how you got here. after everyone else got done doing sparring practice, all who was left was the pink hair girl, shiki, and kougasaki. apparently, she was the only one excused from this activity, as her ability causes extreme blood loss. you sort of felt bad for her, but not enough to care. just enough to not be completely heartless.
you watched intently as shiki and kougasaki fought. the pairing of literal guns against saws seemed a bit…unfair in your eyes. but, you were surprised kougasaki was keeping up so well, even managing to gain an upper hand and beat shiki. though, you could argue it was caused by his brain being the size of a tiny pebble. the pink haired girl, byobugara, ran up to shiki after he didn’t get up after the fight. he got up almost immediately after she reached him though. ‘were they dating?’ you thought, tilting your head a bit. “yes.” a voice snapped you out of your thoughts, your head turning towards it. kougasaki was sitting next to you. close enough you could feel the heat radiating off of his body. “w-what?” you stuttered, eyes meeting his, “they’re dating, i think. it’s what you were thinking, i assume?” you nodded, looking back at the couple.
you couldn’t help but feel a warm feeling in your chest as you saw how tender he was with her. You felt a smile creeping onto your face, looking away to stop it from spreading any further.
it’s been like this for a few months now, sparring practices once a week alongside other tasks. though, the highlight has been getting to know everyone a bit more. you’d never felt seen anywhere, but here it was different. you even felt happy, a feeling you’d never been able to describe until now.
you’d gotten extremely close with kougasaki, even being on first name basis now, though he called you umi-chan a lot. you’d ask why and he just said “your eyes remind me of the ocean,” in a monotone voice. you couldn’t even deny the blush that spread across your face, your ears even tinting red/pink as your body temperature rose.
“oi! umi-chan~” you looked up from the book you were lost in, meeting the smiling face of jin running towards you. you moved over, giving him room to sit on the blanket you had to cover the grass. “whatcha reading?” he asked, taking out two pudding cups from his pocket, handing you one with a small plastic spoon. you put your book back in your bag before taking the dessert, “just some horror book mudano let me borrow.”
you both ate in a comfortable silence. “umi-chan, can i ask you something?” you turned towards jin, staring into his golden eyes as you nodded. “do you..um,” he started, looking away from your gaze as he fell quiet. ‘how the hell am i supposed to ask her out when my heart is pounding out of my fucking chest? jeez, jin, get it together. you’re an adult for fucks sake!’ you smiled warmly at his thoughts. you felt guilty for peering into his head, but you could hardly care in the moment. you sat up on your knees, turning your body fully towards him. “jin,” you called, causing him to turn his head towards you, “i like you. a lot. and there’s nothing more i want right in this moment than for you to kiss m-” your eyes widened as you felt his lips crash onto yours.
you melted into the kiss, your arms going to wrap around his neck as his found comfort around your waist. he pulled away first, a blush spread across his face and his eyes narrowed with blown pupils. “i love you, [name].” he said, to which you smiled at, “i love you too, jin.” you pulled him into a tight hug, to which he was quick to reciprocate. you sat there for a while, sitting in the grass with your, now lover, as you held each other with beating hearts. it was all so perfect.
until it wasn’t. your first mission. you’d be lying if you said you weren’t nervous. you’d gotten the hang of your blood, producing top qulity blades with ease, but your kishin power was totally unpredictable. “hey, umi-chan,” you looked over at jin, who was smiling behind the mask, “you’ll be fine, i won’t let anything happen to you.” you couldn’t help when your heart began to race at his words. you two has only been dating a few months, but he was always there for you. everyone at school already knew, as he was surprisingly a huge fan of pda, which you didn’t mind.
you sat in your uniform as the hum of the sea calmed your nerves. you, shiki, jin, and mudano were on your way to tokyo city because of the news of the momotaro agency finding a base hidden under tokyo. it was your mission to make sure the dispatched agents were dealt with and the oni were all okay. you reached your hand out of the boat, your hand above the water as you concentrated to pull some of it up to touch your hand. this was about the extent to the power you could control. the first incident was a few weeks ago, when shiki dropped a full glass of water on you, or in front of you. you held your hand out on instinct to catch the glass, except you…caught the water instead? the glass hit the ground, breaking into pieces, as the water remained floating. you moved your hand and the water splashed all over the ground.
you’d been trying to control your powers ever since, but it hasn’t made much progress. but, you could deal with that once you got back. you had a mission to focus on, and you’d be damned if you let yourself get killed before you got stronger. stronger than jin. stronger than mudano. stronger than shiki. you hated feeling inferior, even if you were strong enough to go head to head with all three of them, you knew there was only a matter of time until they beat you, and truth be told you were tired of being beat. you wanted to win.
you were always like that, even as a kid. always had a drive to be better than everyone, to win. and you always did win. sporting events at school? you made sure to get first place. science fairs? first place. tests and exams? you always got the highest score. 100% each time without fail. but, the one thing you could never do was beat your father in sparring matches. and it only got worse once you learnt you weren’t really related. he’d stopped holding back. even if he was old, he was still more experienced and sharper with his movements, you were never able to beat him. and now that the old geezer succumbed to old age, you never will be able to. and it ate you up inside slowly. you fucking hated it with every bone in your body.
and so, here you were. standing face to face with a high ranking member of the momotaro agency, who also used swords to fight. he seemed to be in about his mid 30s. “so, you’re the other kishin brat huh? we’ve been hunting your brother for years now, and now we get to kill two birds with one stone! how exciting.” he licked his lips, his swords drawing as he stared at me, almost as if he was waiting for something.
i removed my jacket, wincing as the cool air hit my exposed stomach. i tore the binding flesh from my wounds, grabbing the twin blades i thought of using. they were the highest quality yet, and i felt so…hungry. he wasted no time in starting his attack, lunging at me with full force. i was able to dodge his attacks easily, even managing to get a few cuts on him. “you’re pretty good for a little girl, but i think that’s enough of messing around.” he disappeared. what the hell? the next thing i knew, i felt a knife in my back, i looked down, seeing the end of the blade. he pulled it out, causing me to fall to my knees.
no. no, this cant be happening. i…i can’t lose. i have to be better.
everything went black for a while. i woke up to the feeling of water droplets on my skin. i opened my eyes, seeing the face of my boyfriend. “[name]! please, stay awake. please,” he was crying. it wasn’t the rain i was feeling, but his tears. “please, i need you.” i felt weak. i felt like i was melting. is this what it feels like to die? i feel sleepy. my eyes are so…so heavy. my vision got blurry as tears began to form. i don’t want to die. please. i haven’t gotten strong enough yet.
i lost consciousness after a while. i thought it was the end. i’d felt like i was alone. everything was dark, and i couldn’t hear anything. was this the afterlife? a whole bunch of nothing?
i opened my eyes, bright lights near blinding me. “[name]?” shiki? i looked around to the best of my ability, spotting my brother staring down at me. i was still outside, i could feel the pool of my own blood seeping into my clothes. it felt disgustingly cold. i’d felt something in my arm, a needle. was that pretty doctor saving me? probably. “shi..ki.” i managed to get out, gaining the attention of everyone. jin rushed over, planting himself next to shiki as he grabbed my hand, “[name], i’m here. i’m not going anywhere, okay?” i smiled, gripping his hand with all of my strength. i lost. i lost and i’m somehow still smiling. how ironic.
a couple of days past until i woke up again. i was in a coma of some sort as my body regenerated. jin’s hand was still holding mine as he slept in the chair beside me. shiki was here too, but he was awake, staring out of the window mindlessly. “hey, shiki?” his head was quick to turn at my whisper, “i’m glad we met. you’re the first family i’ve ever known.” he smiled, coming over quietly to hug me, careful not to wake up jin. “i’m glad i met you too, sis. i’ll tell the others you’re awake.” i nodded, watching as he left out of the door. i squeezed the hand resting on top of mine, causing him to stir awake.
“umi-chan..?” he looked at me, his eyes quickly watering as tears threatened to spill. “jin, if you cry right now i will hit you, i swear.” he smiled, placing a kiss to my lips. “i’ll take it.” he said, the tears falling down his face, “i missed my umi-chan. so” another kiss. “so” and another. “so” and another.. “so much.” he said, placing one final kiss to my lips. i smiled, my own tears spilling out. oh, how he made my heart feel so light. “i missed you too.”