Disclaimer: I don't own Blue Exorcist, and sadly never will. I only own my OC.

Chapter 1: Conditions

Chio mentally swore as the hot soup from the noodles burned her mouth as she greedily ingested them. Despite this, she carried on eating the ramen enthusiastically. She had waited all day for this, endured a long and annoying rant from the matron for not scrubbing the tiles correctly and then finally pushed through the last job application just so she could come and stuff her face in privacy.

The meals at the girl's home were terrible and often ran out before everyone got a serving, so it was a pleasant escape to leave and eat at some street ramen stand. Chio thought back to the recent weekend, she had been visiting her families' graves and lamenting over time she could never get back when the little fluffy dog had approached her. At first she had wondered if he had simply gotten separated from his owner, he was so well cared for it couldn't be that he was a stray. She had nearly fallen over herself when the little dog had asked her what was wrong.

Long story short, the dog was not actually a dog but rather the principal of True Cross Academy, the school she had been secretly wishing she could attend for its extensive study programs and most importantly it's cram school for aspiring exorcists.

Chio had been versed well in exorcism for years, even if she hadn't initially known it. Her parents had been rather unorthodox; having her take mixed martial arts lessons alongside a friend since childhood, letting them both learn how to shoot and teaching them about basic demonology as though it were all innocent and flowery. Her parents had been exorcists, that she knew now. Back then she had just thought them overprotective and ambitious. There was a lot she had thought she knew all those years ago; Chio just wished it hadn't taken losing her only family to understand the truth of it all. The dog – Mephisto, had come with a proposition she had not expected. On a silver platter he offered her entry to True Cross under two simple conditions.

Condition one, she was to join the cram school and become a qualified exorcist. Chio didn't mind this one at all, seeing as she already wanted to do so. Somewhere in the back of her mind a little red warning flag had shot up as if to indicate that Mephisto knew this and was merely playing dumb to aid an agenda. Chio had dismissed it in favor of hearing the second condition. Condition two was where shit hit the fan. Chio was not allowed to let anyone in the academy know about her parentage unless her life was at stake. That meant no using her demon powers. Yeah, demon powers.

Chio, or rather Ichigo Mayami, was no normal human girl. Her father was a demon, and he was a nasty one too. He was Asmodeus, Demon Lord of Lust and Lechery. Her so called friend that her parents conveniently allowed her to learn about exorcism with was actually her half sister. They shared the same powers, but the differences were immense. For one Ume was a terrible human being but alongside that they looked like polar opposites too. Ichigo had caramel skin and cocoa colored hair while Ume had stark white skin and a head of dirty blonde locks. Both girls shared a wavy hair type and their unusual deep purple eyes, but physical similarity ended there. While Chio hated her inherited power and had promised herself only to use it to fight off demonic evil, Ume had decided she was blessed and belonged above authority for whatever reason. Since losing her parents Chio hadn't seen Ume more than once a year for their annual fight.

It was a penance of sorts, since they awakened their powers they simply couldn't be in the same room. Ume fought to prove she was superior and correct, and Chio fought to make her remember that she wasn't.

So when the strange dog principal had made her the offer of a lifetime, despite its drawbacks she had accepted. Of course only after she did he dropped the real bomb. Alongside her at the school would be another demon Halfling, and not just any demon spawn either. It was Satan's son, or sons. Mephisto had backed her into his limo rather suddenly and started explaining the whole fiasco much to her annoyance. Satan had fathered two boys around the same time she had been conceived. One had the blue flames of Satan and the other was… human as of yet. The human one was a middle rank exorcist already, and the fiery one was recently removed from the dark having awakened his demon power. Rin was his name. Chio had wanted to scoff.

She and Ume had awakened at ten. Rin Okumura had awakened at fifeteen, how any seal had managed to contain that power for that amount of time baffled her.

That being said, the only reason they had awakened so early was because Ume had been too curious and misbehaved for her own good. The costs of discovering their inheritance had been similar for both her and the boys it seemed.

So now one Okumura brother carried around the Kurikara, while the other toted his guns and pencils, both of them in the strange grey area she had once been. She fingered her staff absentmindedly; she had never met another person aside from Ume with a demon weapon. Her own was a staff folded in two and tucked neatly into her pants to avoid notice. When assembled and twisted two sharp as fuck blades would emerge from the end to kill any demon or human who wished her harm. It made so much sense when she had seen it, the lessons, the martial arts…all for this.

She would have to refrain from using it. No using it ever unless she was about to bite the dust. She had her guns, so those would suffice until she qualified as an exorcist and could ditch the conditions of Mephisto's offer.

Chio sipped her juice silently, things were getting interesting.

/

Chio pulled at her uniform, the scratchy vest and irritatingly pink skirt making her angry.

"Do I really have to wear this crap? It's totally not my style" she said, giving her new principal a death glare. He only chuckled at her.

"It is the uniform that all female students have to wear. Unless you've decided to opt out of our little deal I suggest you keep it on. However, the cram school tends to be less strict if you decide to dress a little frumpier" Mephisto drawled, his hat spinning on his gloved hand. This guy was a real cracker.

"Okay so how do I get there?" Chio asked impatiently. Ever since they'd arrived he'd been goading her. Calling her Ichigo instead of Chio, being vague about everything. Just being an ass really.

"You'll need a key, I suggest you not lose it. They are rather hard to replace" the principal muttered, holding out a shiny key to her. She took it, looking it over suspiciously.

"I can get to cram school from any door using this? You weren't screwing around in the car earlier?" she said, eyeing him. Mephisto rolled his strange eyes and grinned.

"Of course not, that would only ruin the fun. I've let Okumura Sensei know you'll be arriving as a new student today. Do keep to the rules. Also, you'll need this if you have any hope of passing as a real student" he droned, tossing her a backpack which was surprisingly filled with school supplies. Albeit, cheap ones.

"Thanks, I'll make sure to keep to your rules. But if someone shows up here out for blood, well my blood, I'm not making any promises" Chio warned, prompting the cracker man to smile at her in a way she almost wanted to run from.

"I don't expect any less, Ichigo-san" he said mischievously.

Reluctantly but hurriedly, she exited his office and headed as far down the hall as she could before she let out a huge sigh of relief.

Mephisto was a fucking creep.

That guy had motives that much she knew. Whatever they were she was going to make sure she knew she was careful so she didn't end up sitting in shit because of him. Chio nervously rubbed the key in her palm, was she ready for this? She had to be. Her family would be cheering her on of they were here. Hastily she tore off the annoying yellow vest and shoved it into the bag, then began unbuttoning her blouse to expose the shirt she had worn here. It was grey with a mottled looking purple and black rose printed on it. That combined with her normal black boots was casual enough to make her comfy. Screw that uniform.

If this cram school was casual they wouldn't care too much. She went to push the key into the door but found herself hesitating again. Her guns where attached to her hips as usual by her belt, but she couldn't very well walk into a new class with them out in the open could she? Huffing, she shoved them and her extra clips into the Mephistbag. She was pleasantly surprised to find a green sucker at the bottom of the bag; Chio quickly pulled it out and began to enjoy it. She loved sweets; just having one calmed her nerves considerably. Right. Guns hidden, uniform altered, and for security purposes only her staff was folded and tucked behind her out of view.

Turning the key revealed a colorful hall way, it was astonishing to say the least. It did feel a little magical to use a key like this. A door was propped slightly open, pleasant chatter floating into the hall. That must be it. Slowly she approached the door and tried to imagine her new classmates. Chio tried to picture the son of the Satan studying next to her. He had to be like her right? A product of evil incarnate impregnating a human, constantly followed by naysayers who believed he was as evil as his father. They could be friends, and if he was a dick, fuck him. Fuck them all if they were.

In a flourish the door opened, and they all turned their heads to look at the new addition. A purple haired girl spared her a nonplussed glance before returning to her book. Three dudes in the corner looked at her in confusion, and a blonde in a kimono gave her a smile. There was some weirdo puppet dude talking to himself with his eyes shut. The last boy, it had to be Rin, he had the ears and the teeth like her. Except her ears were pointed up and hidden behind her hair thank goodness. Rin turned to look, surprise on his face at having not noticed until after the others. The stalemate carried on, they stared at her and she stared at them. Chio sighed in exasperation.

"Jeez, why are you all staring? It's not exactly like I could've wandered here without realizing it. I'm new here, my name is Mayami Chio" she said with a challenging eyebrow raise.

She was met with a momentary silence again, before one of the boys from the corner manifested beside her. He had pink hair and from the look on his face Chio already knew she was going to break something today.

"Chio, what a beautiful name… What brings you to study exorcism? The pleasure of studying beside you will be all mine by the way, Shima Renzou. " he said smoothly, holding out a hand. Everyone was still quiet as though they were awaiting her response. Chio narrowed her eyes. She hated playboys.

"My reasons for being here are none of your business pinkie. But seeing as I like your hair color I'll let you off the hook for creeping me out just now. Nice to meet you" she chuckled, before taking a seat behind the blonde and Rin. The aforementioned boy promptly burst into laughter, followed by a quiet giggle from the girl next to him.

"Damn Shima, you really have terrible luck with women" he said with a grin.

So she was right, this Rin seemed to be a nice guy. A cute squeaking voice interrupted her thoughts, looking down to her side a little Green Man stood proudly tugging at her sleeve.

"Oh, Nii-chan likes you" the blonde said pleasantly, eyeing the Green Man with adoration and love.

"Is he your familiar?" Chio asked, cradling the creature in her hands. She loved demons as much as she hated them sometimes, they weren't all evil. Green men were some of her favorites. She often saw them in the garden as a child.

"Yes, I summoned him in class awhile ago and I can't get enough of him. I'm Shiemi by the way" Shiemi said kindly.

"I'm Rin, nice to meet ya" Rin exclaimed, offering her his hand to shake. Time to get an estimate of this guy. Mephisto had said she wasn't allowed to disclose info about herself. However, if he came to his own conclusion that she was powerful, it only meant more fun for her right?

Chio grinned and took his hand, shaking it firmly. She felt their strength bounce off each other's and Rin's blue eyes jumped up to meet her purple ones. As their hands separated, she looked at him and tried to gauge his reactions. Curiosity, suspicion, excitement. He seemed nice, childish, but nice. Not a threat either.

"You're pretty strong huh?" he said excitedly, his glossy tail swinging animatedly behind him. Chio felt her own react, as if to join in on the playful vibe, but she kept it wrapped firmly around her waist. The rest of the class knew about Rin, but they couldn't know about her yet.

"Maybe. You're a half demon then?" she asked, looking pointedly at his tail. Rin blanched, along with the rest of the class. Perhaps they thought she wouldn't react well. Looking around, they all seemed to be waiting for it.

"Yeah, I'm terrible at hiding it. My father is Satan, just thought I'd get it out there now" he said quietly, as though he were waiting for her to recoil or move away. Shima and his two friends watched with bated breath, while Shiemi looked on in concern for her friend. Chio almost felt bad for him.

"So? As far as I know nobody is a clone of their dad. We decide who we want to be. I have decided I would like to be your friend, if that's okay with you?" she said, offering him a red sucker from the Mephistbag. Surprisingly there were quite a few candies in there. Rin just stared at the lollipop in surprise, eventually taking it and stuffing it in his mouth.

"Thanks, I'd like that" he said animatedly, grinning wildly at everyone. Shiemi beamed at her, the little Green man dancing happily on the desk.

"Okumura-kun gets all the girls" Shima spat, pushing his pencil around dejectedly. A larger boy with several piercings rolled his eyes before scoffing in her general direction. Immediately she turned to him, death in her eyes.

"Got a problem?" she said sternly. The boy turned to face her, death equally potent in his eyes.

"No, I just don't see why you gotta come cozy up to Okumura because you think he's some strong demon. You don't even know anyone here yet" he said snidely.

Chio bit back a retort about his dyed hair before settling on taking the peaceful route. If she wanted she could make him fall to his knees in apology, make him beg for her attention and humiliate himself. But that was more Ume's style than her's.

"I can be your friend too if it bothers you that much" she said plainly, offering him a wrapped caramel from the bag. Chio made a mental note to refill it regularly if giving candy was gonna be her thing. The boy squinted at her offering, before eventually swiping it from her hand and eating it. Shima made another pained cry at the exchange somewhere in the background.

"The name's Suguro," he said. Chio nearly laughed.

"Chio. And don't introduce yourself like that, you sound like a cowboy or something weird like that. No need to be so callous all the time" she murmured, earning a blush from the boy and a snicker from Rin and Shima. It was easy for her to wind people around her finger in this way, make them react. Chio had no ill intention at all; he was after all her new friend. However, sometimes the gifts her father had given her made her life strangely easy, being able to read people the way she could made building bridges so simple. Sometimes she wondered if it was a trait she had received or developed on her own.

The classroom door opened with an unhappy creak, and a teenager in a long black coat strode in. His glasses glinted in the light, indicating how serious he was trying to be. Yet Chio was pleasantly surprised when he smiled at his class. This was the brother, Yukio Okumura. No demonic traits seemed present, yet she couldn't shake a feeling of foreboding that washed over her when she looked in his eyes. Oh well whatever.

"Good day everyone, I see you've met our new student, Mayami Ichigo. Welcome." he said pleasantly, smiling directly at her.

Chio froze. He did not just. He fucking did. The purple haired girl giggled, and Rin turned to look at her in confusion.

"You said your name was Chio?" he said, looking at her questioningly. Chio sighed in irritation. She had told Mephisto to introduce her as Chio, not Ichigo. This had to be his doing, that damn idiot.

"My real name is Ichigo, but I have people call me Chio because I hate being called a word that means strawberry, you can't blame me" she said flatly. The teacher frowned awkwardly along with a few of the other kids in the class.

"I'm sorry, Sir Pheles just told me your name was Ichigo, and he neglected to mention your preferred name" Yukio said. Chio mentally exploded.

"That damn cracker, I knew he was behind this. I told him to call me Chio a million times today and did he listen? No, it's always Ichigo this, and Ichigo that. Ichigo don't break the rules, don't destroy your itchy uniform Ichigo" she growled, her fists clenched. She should've known he was just going to annoy her if she accepted his offer.

Rin began to cackle, followed by Shima and Suguro. The small bald kid silently giggled behind them, and Chio swore she heard a snicker from Shiemi. Although she puffed her cheeks out in irritation, she was happy that people were so welcoming.

:Well I think this went okay, please be good to me as this is my first Fanfiction attempt. Reviews very much appreciated. *nervously fumbles*