So here's the next chapter. You'll learn more about Calista and who she is. This is my longest chapter yet and I hope that you're not dissatisfied with the way it's come out. Let me know what you think! Reviews are always welcome and encouraged!

I do not own Blue Exorcist/Ao no Exorcist

Only the Oc's created for this fanfiction

Calista's PoV

With the power back on, Calista was able to take her bath, one she desperately wanted; the warm water usually helping her to calm down at the end of a day. With the water at the temperature she liked, Calista sinks up to her chin, closing her eyes as she sighed. Her entire body felt really tense, like her muscles had been overworked. "Man I hate when it gets like this..."

"Suck it up and let someone help you, damnit! Quit acting like a brat!"

She gasps out loud and sitsup straight, water splashing over the tub and onto the floor with her jerking movements. Yukio's face and voice invaded her thoughts. "Damnit..." Shaking her head and closing her eyes again, she tries to force him from her mind. She didn't need that glasses wearing, know-it-all, telling her what she needed to do. Once she got him out of her head, she opened her eyes again and pulled her knees to her chest, wrappingher arms around her legs, andholding
them there.

Her stomach clenched tightly and it made her groan in pain. Tightening her arms around her legs, Calista placed her chin on top of her knees, staring into the water. What was she going to do? If she stayed around these two, she would eventually be found out, and then she'd be seen as even worse than the Son's of Satan. Gritting her teeth, she refused to let either one of them figure her out.

"I'll go out tonight, as soon as everyone is asleep...There's got to be a butcher's shop somewhere in town. I'll just grab some from there and it'll get me through at least a couple of days. Once the weekend comes, I'll have more time to be on my own...then it won't be so suspicious when I go out in the middle of the night." She spoke in a hush whisper, although the bathroom walls still made her voice echo. Thankfully, she was the only female in the entire building.

With another sigh, Calista let her legs go and sunk back underneath the water, this time completely submerging herself. Holding her breath, she stayed under as long as her lungs would allow. When she reached her max, she quickly surfaces again, taking in a lungful of air, andsweeping her drenched hair back away from her face. Not wanting to spend any longer than she needed to in here, Calista finished her bathing, washing herhair, face and body. Grabbing her towel, she wraps it around
her, letting the water drain as she sits on the side of the tub.

The water finished draining, and she continued tositthere for several more minutes. Her hands curled up into tight fists, before she spoke to herself, "Stop wasting time...just get dressed and go back to your room."

It took her a half a minute more, but she eventually did get up and get dressed. Wringing her hair out, she pulls the wet strands up into a tight bun on the top of her head. With her hair up like this, it left her pointed ears exposed. Now that Yukio knew the truth about her being a half-demon, she didn't see the point in hiding it anymore. She was glad that she didn't have to deal with a tail like those two did.

Carrying her wet towel, and dirty laundry, Calista leaves the bathroom. She could hear someone in the main kitchen just down the hall. Figuring it was probably Rin making lunches for the next day, she decided not to pay it much attention, instead ignoring him and going back to her bedroom. Certain that Yukio was long gone, she entered the room speaking openly to Cerberus while hanging the towel on the rack behind her door.

"Once those two have gone to bed, I'm going to head back out and find a butcher's shop. What I can get in there should be enoughto get me through the remainder of the week. Then this weekend, I'll figure out something better. Will that be enough to get you off my back?" She asks him, turning around to see him, only to find Yukio Okumura sitting in the same spot she'd left him. "W-what are you still doing here?! It's been over an hour!"

She noticed that his coat was off, leaving him in the white shirt and black school pants. His arms were crossed over his chest, and legs crossed as well, his face cold as stone. "I can't let you leave this dorm, not in the condition you're in. You're likely to hurt someone." He said it as a matter-of-fact, his voice calm despite the look on his face.

Her eyes narrowed and her hands turned into fists at her sides. "What the hell are you even talking about? You don't know anything about me and you can't keep me here just because you're a teacher."

He used his index finger to push his glasses back up his nose, a gesture he seemed to do often. She didn't wear glasses, but she started to feel that he did it excessively. "I know everything now and knowing about your secret, I can't let you leave here in the condition you're in." He repeated.

"W-what? How could you possibly know anything?!" She glared at him, only to see the hellhound behind him sleeping away. "You...You told him?!" Cerberus opened his eyes and lifted his head to look at her, only to lay his head down again, ignoring her.

Yukio suddenly stood up and took a step towards her. "If what your familiar has said to be true, than letting you leave like this makes you a danger to everyone."

Calista took a step back from him. Why was she suddenly intimidated by him?! "I think I know better than you about how to handle my own needs! I don't need you telling me about being a danger!" She took another step back, turned on her heel and went for the door. She wasn't going to let him scare her! "I don't need you to look after me! I'm out of here!" She got the door open, but before she could take one step out, she felt his hand grab her wrist; his hold firm, but oddly gentle. Looking back at his hand around her wrist, she pulled hard, trying to get free, yet only hurting herself in the process. "Let me go, Yukio!" Had she been at full strength, she probably could have freed herself easily.

"I told you, I'm not letting you leave here in the condition that you'rein. If anyone got hurt or killed, it would be on me." His voice was still oddly calm. How could he possibly be this calm when she was literally fighting to get free of him.

"If you don't let me go, the only one going to get hurt is you!" She knew her limitations, she knew how much she could and couldn't take. She wasn't new to this, having lived with it her entire life. In the beginning, before she could control her urges, she killed nearly everyone she came across. Hating herself with every day that passed, starving herself and only making the cravings worse. It wasn't until she'd been found my an Exorcist meant to kill her, that she was finally about to get control
over herself. After that, she never lost control again...and dedicated herself to becoming one of the youngest Exorcists ever, soshe could help others like herself.

"I don't care..." This took her by surprise. He didn't care if she hurt him? Was he stupid...? "As your teacher, I'm here to help guide you and help you in any way that I can." His hold on her wrist loosened and then let her go completely. She watched him, her hand on the doorknob, ready to bolt, but his next move kept her standing there.

Yukio unbuttoned the two top buttons of his school shirt, exposing his collarbone and throat. His skin was pale and so smooth, she found herself staring at the throbbing artery in his neck, the one that supplied blood the brain. In her mouth, she felt her already sharpened canines, lengthen and sharpen even more. Closing her eyes she shakes her head, trying to pull herself together. "What the hell are you doing?" She asked, her voice slightly strained.

"Haven't you been listening, or are you as hard of hearing as my brother?" There was annoyance in his voice. "I'm going to help you, stop being so stubborn and thinking you can handle everything on your own. It's obvious that you're struggling."

"You don't know what you're doing..." She shakes her head again, refusing to open her eyes and look at him. "I can handle this. I don't need your hel-"

She was suddenly cut off when she felt his hands grabbing her upper arms and her back hitting the door behind her, slamming it closed the rest of the way. He did it with such force, that the breath rushed from her lungs, causing her to gasp. When she opened her eyes and looked up at him, she saw a side of the younger Okumura brother that she had yet to see; one she only saw from the older of the two. His eyes were a deeper shade of teal, almost blue, and at their centers were crimson.
His brows were furrowed in an expression of outrage and pent up aggression.

"Just shut up, damnit!" He yelled at her, his voice deeper then before when he'd been arguing with her. "You can't always do things on your own! You have to let others help you!" Letting go of her, he stands close, his shirt partially opened, exposing his neck to her. Lifting a hand, he pulls it to the side, further exposing his throat along with his shoulder. "Now shut the hell up and feed already!"

Yukio's PoV

Yukio glared down at her, his temper already slipping through. If he wasn't careful, his flames were likely to ignite. He was struggling himself,in controlling his flames, but had a hard time taking his own advice and seeking help. Not wanting anyone to look at him differently, or the way they often looked at his brother; with fear in their eyes. Pushing those thoughts to the side, he came back to the matter at hand.

After Cerberus had explained everything to him, he had to admit that he was completely stunned. Never had he heard of a vampiric demon before, much less a half bred one. From what the hellhound had told him, Calista had been found as a child of 4 or 5 by an Exorcist who'd been sent to take out the demon who was killing thepeople of their village. Someone would go missing every few nights, only to turn up with their bodies drained of blood. When the Exorcistfound her, she'd been unable
to kill her target, instead bringing her back to the Vatican and raising her, much like his father had raised him and Rin. Even though there has never been an incident again, Yukio wasn't taking any chances in letting her leave here and cause harm to anyone, not until he was certain she'd be able to control herself. If feeding her his own blood would achieve that, then so be it.

"As long as it's either human or demon, it doesn't matter. Animal blood will suffice for a day or so, but the cravings will come back stronger than before. She must consume blood to stay at her strongest. Once every couple weeks, or she'll become weak from hungry. Today marks 3 months since the last time she's fed." Cerberus explained in detail the nature of Calista's demon side. "She hates this side of her and pretends it's not there, waiting as long as she possibly can."

He understood all to well the hate she felt towards her demon half, hating his own every single day...

"Don't just stand there!" He yelled at her again, bringing his focus back on her, and her's on him. "You're not leaving this room until I know you won't be a danger!"

He could see that her eyes were practically glued to his exposed neck. The feeling of her eyes on him like that, made his mouth dry and his throat tighten up, he could even feel the blood rushing to his face and making him blush. Even though it was something that he never imagined himself doing, Yukio couldn't help feeling some kind of rush go through him, one that he tried very hard not to linger on. "Hurry up before I change my mind...!" He said to himself, wanting her to get on with it before
he chickened out. "What the hell am I doing?!"

She made the smallest of movements, but it was enough to grab his attention once more. He thought he heard her whisper something, but before he could ask her to repeat whatever it was that she said, she was taking another step closer, now putting them just inches apart. Yukio swallowed the lump in his throat, and even if he wanted to say something, he didn't think he would be able to. She stood on her tiptoes and her arms came around his neck, resting loosely on his shoulders, pulling herself up and even closer to his neck. He could now feel her warm breath against his skin and he closed his eyes, readying himself for what he knew would come next.

When she finally "sunk her fangs into him", Yukio was surprised that it didn't hurt like he imagined it would, or like it was portrayed in his horror manga. Instead, it was more of light pinch and then...His blush darkens even more, turning his entire face red. The sensation of her mouth against his neck, warm and wet, was one of pleasure. Her tongue licking his skin as she sucked was something he's never felt before and as she continued to drink from him, he found his arms coming around her body and holding her against his chest. She was small, not just in height, but her waist too. Tilting his head down, giving her better access to his throat, he breathed in the scent of her shampoo. "She smells incredible." He thought, his arms tightening around her even more.

Her arms around his neck tightened just as his around her body did, and as they held each other in an embrace, Yukio's thoughts began to wonder, just as his hands did. Moving from her lower back, up along her spine. As he got higher, he could tell that she hadn't put a bra on after her bath. He felt a small smirk pull at the corner of his lips. His hands began to move back down again, gliding over her back and he felt her shiver at his touch. Wanting to get the same reaction out of her again, he got a little bolder; moving his hands underneath the edges of her shirt, wanting to feel her bare skin beneath his palms.

"Hey! If you're hungry, I fixed us up something!" A loud bang sounded on the outside of her door as Rin's voice interrupted them.

Immediately, Calista pulled out of his arms, turned her back to him and lifted a hand to wipe at her mouth. She didn't look back at him when she spoke. "The puncture marks will disappear by morning. I didn't take much, so it shouldn't affect you in any way." Before he could even say anything, she was out the door, leaving it open for him.

"What...just happened...?"

Well there it is! The first real interaction between Yukio and Calista! I hope you enjoy that small lemony goodness. I hope to have more in future chapters. Let me know what you think about Calista's origins. I hope I didn't get too out of character with Yukio. ^^" Send in those reviews! Until the next chapter. 3