this is an idea that i see a few times with demon and romance stories, might as well include one for Rin and Shiemi ^^

As much as he hated to admit it, Yukio was at a loss on what to do.

Before him were Rin and Shiemi, stuck in the oddest situation he could have never have imagined. And he had absolutely no idea what to do about it.

The said girl involved in his sudden problem was unconscious in Rin's arms. Now, this was nothing new. He and Rin were usually the ones to always carry her whenever she was injured, his brother even made it to a point that he could do most, if not all the time. He might have overlooked this if he didn't see the blood curling down on her brow, a bright, ominous red against her pale skin. She either had a simple cut, or it was a concussion.

Normally, he would be there on the spot to check.

Only he wasn't being allowed too.

The main root of this predicament, his brother, wasn't letting him get close. Blue flames flickered and flared around his body, and Yukio instinctively worried at first if they would have burned Shiemi; he quickly reminded himself that Rin's flames never hurt those he cared about though.

The flames weren't his problem.

His problem was with Rin himself.

He held Shiemi as he always would have, close, gently, and protectively. Normally, it would be considered that in his arms, there would be no safer place.

Now, Yukio wasn't so sure.

Rin held the girl close, crouched like a cat, his tail swaying to and fro as he growled warningly at Yukio, the growl resonating and rumbling out thickly in the air; heat radiating off the devilspawn, the blue flames seemingly getting brighter and brighter the longer Yukio stood in his place.

Yukio grimaced at this. This was supposed to be a simple mission. Take care of a demon that had been haunting the streets, creating car accidents that were getting out of hand. The demon turned out to be more powerful than he had guessing and Shiemi had ended up getting hurt and Rin had snapped when the battle was taking a turn to the worse.

They defeated the demon, though Yukio wasn't sure if this battle really was over.

Rin's eyes, his uneven pupils glowing like red embers, were locked on him and glaring at him like he was an enemy.

It reminded Yukio of that night that Rin went berserk, the night he overwhelmed Amaimon and charged at them.

It had been a miracle that Shiemi was able to bring him back.

But it seemed like she wouldn't be able to this time.

"Brother," Yukio tried, taking a cautious step.

Rin snarled at him violently, jerking forward and swiping his claws at the air, sending bright fire his way. Yukio barely had a chance to jump back and avoid them.

"Let Shiemi go," he went on, his hands tightening their grip on his gun.

Rin hissed at that order, fury burning in his eyes. "Mine!" he snarled, tugging her even closer.

"Let her go!" Yukio shouted, firing a warning shot. It flew past Rin, scraping along his head. Yukio had hoped that it would have been enough for him to drop her out of surprise or come to his senses.

It didn't do what he wanted unfortunately.

Rin went stiff, feeling pain in his head, his ears echoing with the gunshot, and warmth dripping down his cheek. He didn't drop Shiemi like Yukio wanted. He simply stood in his crouch, frozen as he struggled to process that he was shot at.

When it clicked, hell broke loose.

Rin roared furiously, his fire brightening and spreading, rushing at Yukio like an angry wave. Eyes wide, the exorcist fled back, trying to outrun the flames, saving himself from burns as he dashed into an alleyway, letting the heat flash past him. He spent a couple of seconds assuring himself that he was still alive, adrenaline ringing in his ears at the close moment before he jerked back out, gun ready and pointed at...

...air.

Rin was gone. Shiemi was gone.

Rin was going berserk as a demon. Shiemi unconscious and in his clutches.

Yukio slumped in disbelief.

His problem just got worse.

Shiemi groaned as she slowly woke. The ground below her soft and the air around her warm, with a heavy smell of flowers and plants that she knew well enough all around her.

For a moment, she played with the idea that she might have fallen asleep in her secret garden again. It wasn't unusually that she might have passed out here while she was working. It was pleasant and relaxing being here, surrounded by calm and eased plant life.

There really didn't seem to be any problems here, nothing any of reality's hardships could touch here.

But when she felt an uncomfortable warmth on her forehead, heavy with a slight smell of metal that was odd among many of the other flowers' scent, and an aching throb on her head; she figured reality must have found a way to follow her.

Frowning and still refusing to open her eyes just yet, she reached up, lightly touching where the warmth was on her face. She jerked back when she felt liquid.

Opening her eyes, she saw red on her fingers.

There was blood on her fingers.

She blinked, surprised at the sight. Why was there blood on her fingers? Did she hit her head while she was working?

No... she was always careful and the demons in her garden always helped and secured her presence here. And she didn't remember working with anything that could have caused a wound on her head...

She did remember being out in a city, working a job with Rin and Yukio, dealing with a demon that caused accidents. She remembered being a little too careless and getting swiped at and knocked out. She sighed, a little sad that she was overwhelmed so easily, but glad that she was able to live through that experience.

Though she did wonder how and why was she in her garden.

Shouldn't she have woken up with Rin and Yukio above her? Patching her up and making sure she was alright?

Why was she in her secret garden?

Suddenly, Rin's face appeared above hers, his blue eyes staring intently down at hers, their noses brushing against each other. Surprised and with a squeal, she jerked up, intent on putting some distance between them, only for their foreheads to hit hard.

They both cringed away, Rin yowling as he held his head, and she whimpered as she held her own delicately, the light pain she felt before was now ten times more stronger, leaving her forehead overly tender, even to her touched. Quivering at the pain, she peeked her eyes open to see Rin staring at her with big, wide eyes, looking hurt and frightened. Wincing, she smiled reassuringly at him, saying softly, "You surprised me."

He blinked at her before he smiled sheepishly, letting his hand drop and revealing a large, red smear on his forehead.

Guilt jabbed at her.

She got blood on him.

Ignoring the pain, she murmured, "Sorry Rin, I-"

She cut herself off when Rin started to lick his hand, clearing away the red drop that was on his fingers, murmuring contently to himself as his tail wagged lazily. Much like a cat, his hand rose up, swiping up all the blood it could before he licked them off his fingers once again. He kept it up till he got every last drop off his head, his eyes were glued to her as he finished and licked his fingers cleaned.

Shiemi really didn't know how to feel about this. The sight of Rin licking her blood clean much like a cat, and his eyes glued to her intently.

Was this her Rin?

She stiffened when she finally noticed what was different about him.

His eyes, the irises of his blue eyes were scrambled and jagged, with the pupils glowing like cinders in an ash pile.

Those were Rin's demon's eyes. Eyes he got when he got overwhelmed by his demon heritage, eyes he got when he was running pure instinct so that he could survive the worst fights.

But there wasn't any danger here... was there?

As if to make sure, Shiemi looked around her secret garden, seeing that everything was fine and peaceful. There was nothing to fear here.

So where his eyes like that?

Movement came in the corner of her eye and Shiemi turned to find Rin leaning close and a sudden feeling of something warm and wet slide across her forehead.

It took her a minute to realize that it was his tongue and that he was licking her.

Squealing, she shoved him back, gawking at him. Rin slid back, not enough to fall out of the flower like bed, but to the edge of it, staring up at her with wide eyes, his tongue still out and his pointed ears up slightly, perked up and startled by her sudden actions.

Face red, Shiemi covered her forehead, stuttering, "Wha-what, what are you doing?!"

His surprise melted into exaggeration. He arced a brow at her before he rolled his eyes; it was almost like he thought she was being the ridiculous one.

Still flustered, Shiemi opened her mouth to shout, but was quickly was cut off with a squeal when Rin was suddenly up close once again. Automatically, Shiemi leaned away, with Rin following her closely, his arms caging around her as he leaned forward, his tail coming around and wrapping around her waist to keep her in place. Surprised, Shiemi tried pushing him away, unlike the first time though, Rin resisted, his tongue lulling out and gliding over her forehead, lapping up the blood.

Shiemi shivered as his tongue licked away the blood, clinging to his shirt and making a face at the odd sensation. Sensing her unease, Rin purred down at her, coming to the side of her face and nuzzling her. Giving her cheek a quick lick, he went back to her forehead, lowering her to the ground as his hands came up and gently moved the hair strands away so he could lick at the cut that was hidden by her hair.

"R-Rin?" she squeaked, her face even redder as tomato.

Her answer was a distracted purr as Rin focused on his work.

Sighing to herself, she decided to just lay still and let Rin do what he wanted. He wasn't hurting her after all... even if this was really weird.

With one last lick, Rin drew back, looking pretty satisfied and proud of himself. Slowly, Shiemi followed him up, her hand rising and lightly touching where her cut would have been.

Only she didn't find it. Her cut wasn't there, not even a scar.

"Wow," Shiemi breathed, looking up at Rin with wide eyes. "Its gone! That's amazing Rin!"

He beamed at her praise, his tail wagging excitedly. But paused when he stared at her hand. Quickly, he snatched up her hand and Shiemi realized that there was still blood on her fingers. Much like her head, Rin licked the blood clean off her fingers, making her shiver and blush at the odd sensation as his tongue curled and lapped at her finger tips.

Once her hand was clean and he was satisfied that there wasn't a trace of red on her, Rin released her and stretched like a cat, yawning a big lawn.

Grinning at him and secretly wiping her hand clean, she said to the half demon, "Thanks Rin."

Rin blinked at her before he grinned toothily at her. Slipping closer to her, he practically fell onto top of her, leaning all his weight on her as he curled up at her side, purring loudly as his tail weaving around her wrist. Shiemi almost fell back, blushing hard at the sudden weight and the vibration that came from him. Then she grinned, her hands rising on their own and weaving through his hair, much to the half demon's delight, his purrs getting louder as he tried to snuggle closer to her.

Well, she doesn't know whats going on with Rin, but its pretty sweet at the moment.

"Why are you laughing?!" Yukio exclaimed, glaring at Mesphisto as the demon laughed in his seat, his arms wound tightly around his side.

"This is serious!" Yukio insisted, "Rin's stuck as a demon and he took off with Shiemi!"

"That girl," Mephisto declared through giggles, "is probably in the safest place in the world. Going there would just cause more problems than any good that you could try. Just leave them be, the girl will be fine."

"Fine?!" Yukio exclaimed.

Mephisto sighed, shaking his at Yukio, his laughter finally calm. "Yukio," he started, "How much do you know about demon mates?"

Yuko frowned at him before he paled at the sudden realization. "Rin's not going to-"

"Not without her consent," Mephisto eased. "Demons take care of their mates. Their comfort and well fare is and always will be at the top of their list and instincts. You said she was hurt?"

"Yes, a demon knocked her out and Rin went crazy."

"Then he's probably wasting his time away taking care of her wounds. Once he sleeps it off, everything will be back to normal...Mostly."

"Mostly?" Yukio asked suspiciously.

Mephisto grinned innocently. "Just keep a close eye on him in class. Demon tails are very expressive, and may want some kind of contact with her, after all, mates are the only ones that can get away with touching a demon's tail."

"...Anything else?"

"Yes, he may get more of a temper than he already has. Demons are possessive and easily jealous. Thankfully, that girl has a tendency to stay close, but just get ready. He may get a violent tantrum if one student gets too close or does something he doesn't like. He also might be a bit affectionate around her as well." Mephisto grinned. "Such fun this semester will be," he cooed.

Yukio scowled at him and left, muttered curses under his breath.

Why did Rin always get in situations like this?

True to Mephisto's words, Yukio found Rin and Shiemi later today, both blushing but pretty normal. She eased his worries about her injury and Rin glared at him darkly whenever he got to close to Shiemi.

Yukio sighed.

Mephisto was also right, that this was going to be quite a semester.

in some stories that i have read and seen in a few mangas, demons are very possessive of their mates and always take really good care of them and are very expressive around them. They show a different side to mates that no one else would ever get a chance to see.

they'd make the best lover from what i usually see.

i didn't see one for rin and shiemi yet to here we are! ^^