Chapter Text
As if you didn’t already have enough problems in your life. You could handle your mom dying while you were a baby and not knowing your dad. You could handle being raised by people who resented you. You could even handle that you were the freaking daughter of mother fucking Satan! What you couldn’t handle was the fact that you were in love with your own brother. Sure, you didn’t know he was your brother in the beginning when you met him at True Cross Academy. You simply knew that he was cute, incredibly funny (although full of himself at times) and knew how to cook like a pro! It didn’t take long for you to fall in love with him. After spending more time with Rin Okumura you even started to think that he felt the same way. After all, you’d catch him blushing around you quite a bit and it was always fun to get him flustered. Someone just had to take your rose colored glasses from you and smash them into bits!
“I wouldn’t get too attached to him if I were you (y/n).” Came the lazy drone of Mephisto, the president of the prestigious academy that you had been lucky enough to get into. He came to you with the scholarship! An opportunity to get out of your oppressive house and away from your hateful relatives. This flamboyantly dressed stranger seemed to know things about yourself that you didn’t even know. But at the point you were willing to trust anyone as long as it meant you got the hell out of that place! So you eagerly started your new academic life at True Cross Academy. You were just a regular student until your powers revealed themselves. Mephisto explained to you the true identity of your father and what that made you. You didn’t want to believe, but the proof was the tail that had sprouted, your pointed ears and the hellish blue flames that swirled around you like a veil. That’s when he told you about the Exorcist classes that were offered there. How you could use your powers for good and control them. And that’s how you met him.
“Do you take it upon yourself to butt into the love lives of all your students?” you mutter and grip the strap of your book bag. You hated the small blush that dusted your cheeks. He had caught you a little too close to Rin; carelessly laughing away about something he had said to Suguro.
“Not really. I’m just giving you a warning. That’s all.” Mephisto pulls down the brim of his hat, grinning like a damn cat. He starts chuckling at your confused look.
“What’re you laughing about?”
“Young love truly is blind. You haven’t noticed anything similar that the two of you share?” Indicating with his index finger to your teeth and ears.
Your brows furrow. “What’re you saying?”
“Why, Rin Okumura- and Yukio at that matter- is your brother.”
Your heart stopped and the world around you seemed to tilt. “Wh. . . What?”
“Rin inherited Satan’s power. You share the same father as him.”
Stomach flopped painfully inside of you. “You’re lying. . . Why are you lying?”
“Why indeed would I lie to you? If you don’t believe me ask to see his tail. You’ll find it quite identical to your’s. Perhaps if you show him your’s he’ll show you his.” Again he let out an obnoxious cackle at your predicament. “So tell me (y/n). Do you still love him now?”
You didn’t bother to answer. You high tailed it away from him. You would ask Rin yourself.
What he told you wasn’t what you wanted to hear.
“Show me your tail.”
He coughs, choking on the juice he had been enjoying until you came into the boy’s dormitory. “E-Excuse me?” Captivating blue eyes wide with alarm.
“Your tail.”
At a loss for words you see caution fall across his features. “How do you know about my tail?”
“So you do have one!”
“How did you find out?!” Rin counters and stands up from his seat in the dining room, menacing as he towers over you.
You really wished he’d denied it. Closing your eyes you pull up the hem of your vest.
“What’re you doing?!” He shrieks until he sees your own tail swishing free from it’s confines. “Hey. . .”
“Surprise. . .”
Now here you were. Heart broken and so confused. Your feelings should have ended there once you confirmed that Rin was your own flesh and blood brother. You still found yourself attracted to him. That bothered you even more than the fact that you were the offspring of Satan. Taking it upon yourself to put some distance between the two of you you started to avoid him, even so far as to try and ignore the stares you felt coming from him in class. Instead you buried yourself further into your textbook. Everyone noticed the abrupt change in your relationship. Just a few days ago you couldn’t leave each others side!
“Miss (l/n)?”
“Shiemi, you can just call me by my first name.” you smile gently at the sweet girl who you were lucky to call your friend.
She returns the smile albeit shyly. Then it slowly curls back into a frown, her eyes wavering with concern. “Is something wrong?”
“Why do you ask?” An eyebrow lifts at her question.
“W-Well both you and Rin. . . haven’t talked to each other in a few days. Are you mad at him?”
You hum in thought. Trying to think of a reply. “Not necessarily. He didn’t do anything wrong.”
Her light colored eyebrows pinched together in the center. Not understanding why her two friends were not talking to each other. You wanted to erase that look of worry from her pretty face.
“Hey are you doing anything after class? Maybe we can stop by that cafe we saw last time we went to town.” Forcing a large smile you tried to sound enthusiastic. Shiemi had always been easy to please. Your distraction works somewhat. She leaves it at that but you can still tell your lack of an answer bothered her. What could you do? You couldn’t tell her that Rin was your brother. She was smart enough to see that you had a crush on him. And Rin’s adoring love sick gazes he sent your way could hardly be ignored.
Yukio walks into the classroom then, his long trench coat trailing behind him and authority set in each step. “Alright everyone. I’d like for you to turn in your homework up front.”
There’s a groan coming from behind you. “Damnit. I knew I forgot something.”
A pain shuddered through you. You’d always been the one to help Rin with his homework when Yukio refused to. You didn’t want him to fail Exorcist classes. Becoming one meant everything to him.
Suguro grunts an insult at Rin’s expense.
Yukio continues on ignoring his brother’s distressed groan. “After that take out your books and open to the page that's written on the blackboard.” When he turns back around to face his students his bluebell eyes land on you. Dread fills you. No doubt that Rin disclosed you were their sister. In a blink of an eye he addresses the class once again.
(After Class)
You stretch out your stuff limbs with a content sigh of relief that the day is finally over.
“You seemed uncharacteristically focused today (y/n).” Shima teased and stops by your desk. “You and Okumura are normally goofing off.”
“I’ll have you know I’m very serious about my education.” Stating indignantly you “accidentally” slam your book on his splayed fingers making him cry out. “Whoops. So sorry Shima.” A cheery facade plays on your features as tears brim his eyes.
Whimpering out a “I-it's okay. I’m fine.”
You bid him goodbye and turn on your heel to go to Shiemi. Abruptly stopping when you catch her talking to Rin. You forced yourself not to take another step closer. You would just have to wait for her out in the hall.
“(y/n).”
“Yes Mr. Okumura?”
Yukio pushes his glasses up the bridge of his nose. “May I have a private word with you?”
“Of course.” Your fingers clutched at your bag nervously. You follow him out of the classroom, in fact out of the building until the two of you are completely alone.
“Rin told me.”
Concentrating on your scuffed up shoes you grumble “I figured as much.”
“If you are our sister that means you possess the same dangerous powers he does. Including the blue flames.”
You nod.
“You seem to have control over them. Even in your most heated moments I’ve never seen you use your demonic powers.” He observed nearly making you laugh.
“Control over it isn't exactly a walk in the park. It's like a constant struggle of tug-of-war.”
“But you do it.”
“So what?” You hiss beginning to get upset.
Yukio’s face softens, his professional mask crumbling. “I want you to help Rin. You get through to him.”
“I can't.”
“I know this entire discovery must be difficult for both you and Rin. I’m well aware of how he feels about you and vice versa. He needs your help though (y/n).”
“Yuki-”
Suddenly on his knees Yukio is bowing at your feet; forehead pressed against the dirt riddled ground. “Please (y/n).”
You hesitate making an awkward silence. “I… I still have feelings for him Yukio… Even knowing he’s my brother. I can't. Not when I still feel like this.”
His voice held a desperate shrill. “He has no control (y/n). He uses his demonic powers without thinking of the consequences! Sooner or later he'll be past the point of no return! You know that. That sword can't contain his powers forever.”
Every word that spilled from his mouth was the truth that you couldn't deny. Rin needed your help. Chewing on your bottom lip you knew what you had to do.
“Okay. I’ll do it.”
*
“OW!! Damnit (y/n)!!”
“Quit being so hot headed! You need to learn not to let everything get to you! Your demonic power is linked to your emotions. Or at the very least try to suppress them when you’re angry. Concentrate on retaining them instead of your anger.” Exasperated you huff and rub your hand over your fm face in exhaustion. “We’re getting nowhere. Let's just stop for today.”
A tight grip locks around your wrist when you turn to leave. “I’m sorry. Please don't go. I’ll try harder this time. I promise.” Face tilted downward his dark bangs covered his eyes. Your heart thumps in your chest.
“I think we just both need a break. We’ve been add it for hours. You won't learn control of your powers in just a day.” You pull a chair out and sit in front of him. “I’m tired too.” To cheer him up your fingers playfully tug at his soft hair. You catch a peek of his alluring blue as from behind his bangs. “Why don't you make us something to eat. I’m starving.”
A wistful smile brightens up his mood. “Sure. What do you want?”
“It's up to the chef. Surprise me.” Rin leads you to the kitchen. Perching yourself comfortably on the counter, out of his way, you watch him intently.
Chopping ingredients you hear him say “I missed you.”
The throbbing in your chest intensifies. “I missed you too. This whole thing has just been-”
“A complete mess.” He finishes your sentence with the exact words you were going to use.
“Exactly.” Smile cracking on your face you glance at his back. “I just… I’m worried about overstepping boundaries now. I can't feel the way I did about you anymore.”
Stopping in preparing your meal his head inclines your way, body turned half way. “A-and how did you feel about me?”
You blush and instantly regret saying anything. “I don't think that matters anymore.”
“Of course it does!” Rin loudly exclaims; you jolt on the cool surface of the counter and nearly slip off. Whirling around to face you Rin’s face is red, deep penetrating sapphire irises drilled intently into you that you gulp down a nervous lump that had developed in your dry throat.
Weakened courage you're barely able to get your voice to work. “Well it shouldn't. At least not in that way.” Practically a whimper you cower away from his eyes. “We’re already condemned to hell Rin. We’re demons. Even though we never asked to be born like this, we are.”
“Just like we never asked to fall in love with each other.”
There it was. What you had longed for him to say. At your continued silence he stomps about the kitchen.
“Damned if we do, damned if we don’t. At least we’ll be happy! I love you (y/n)!”
“And I love you too you big idiot but we can’t! Yukio knows! Mephisto knows! What would Yukio have to say about this?” You leap off the counter and stalk towards him.
“Screw what Yukio thinks!” There’s mere inches that separate you and Rin. A loud clatter pierces your ears when he slams his fist down on the table making a few metal bowls fall to the floor. You don’t waver or even flinch, instead you stand your ground. Watching him carefully in case he flips out and accidentally releases his blue flames. His tail swished about in agitation. Lips parted with heavy pants you knew any moment now he would snap.
You weren’t helping him. At least not right now. You’d probably made things even worse than before. “I should go.”
His face falls, practically breaking.
Quietly you tell him you’d be back tomorrow after class then leave for your own dormitory.