A/N: This is something I've had in my head for a while now. Eremika and future Rivamika are the main ships but if you're gonna bullshit me because there's no Eren x Levi, lemme say...

Fuck you.

Peace! ^^

Prologue

Eren disposed of the last of his clothing and fell to the floor of his bedroom. On his hands and knees, he arched his back, hearing every crack of his growing spine and joints. Knife-sharp canines stabbed at his gums, until his jaws extended greatly. The brunette colour from his hair remained, and covered his nude and fully transformed body. Panting, he slid open both moist eyes and looked down at his light chocolatey paws. The transformation was complete, and quicker too. The lone wolf padded out of his shared house, using his strong front legs to force through doors. "Eren!" Eren pricked his ears at the unmistakable voice of a certain mage and grunted in acknowledgement. The mage, Armin accompanied him every moon to the forest; out of the way of humans and livestock. Eren had only been changing recently and the young mage was unsure he had much control in wolf form, so, stepped up to help his close friend. Side by side, they casually walked into the ancient forest.

A vampire stalked across a hidden tree branch, keeping herself low like a wild animal hunting it's prey. Prey. She hadn't fed off anything for countless days and hunger knawed at her stomach. She closed her eyes to enhance her hearing and smell. The creature heard a rustle of heavy pads and footsteps and caught the scent of animal and... human? The smell of both creatures were new to her. She presumed it was a human and a pet dog, taking a late stroll in the woods. How unfortunate. She fluttered open her blood red eyes, slit cat-like pupils locating her target. A large ruddy dog padded care-free and huffed every now and again. She pressed her belly close to the rough bark of the oak tree and inched towards to what she thought to be over-grown canine. The she-vampire inaudibly pounced on Eren and felt her long deadly talons stroke the dog's thick hairs but a gush of wind, powerful enough to knock her away from the young wolf hit her from behind. She felt grass brush against her face as she targeted to floor instead. Fuck.

Armin got up from his crouching position once he decided he had enough mushrooms added to his collection and noticed Eren sniffling the floor, which was probable he picked up a scent of some animal. The mage's lips formed, ready to call for him but instinctively blew his most vigorous gust of wind aimed slightly above the werewolf. He was questioning why did it which stopped as soon as he heard a thud. He was dumbfounded that he actually hit anything but mentally announced that whatever it was, it was dangerous; a threat.

Shocked. Bewildered. Dumbfounded. Whatever other words there are, Eren most certainly felt it. He was to occupied by the girl's scent to realise she was that close. He shuddered, recounting how close the claws of hers was to slicing open his back. His fur was erect, bracing himself in case she'd lash out, but, that never came. The young wolf relaxed his posture but cautiously padded closer to get a better look. The feminine demon, Eren decided, had raven black hair about shoulder length and porcelain-no, freakishly pale skin. He'd heard myths of legends of a beast like her; a vampire, although he previously depicted them as disfigured humanoid bitches he admittedly thought she was quite attractive. He barely see her ruby-orbs through her sprawled out hair but Eren noted that they were focused on some invisible presence. His turquoise eyes trailed down to her chest and from that he grunted at her heavy and ragged breathing. Surprise suprise, again. If the lone wolf was still in his pack, he would've killed her on sight, (though in the vampire's state Eren would be doing her a favour). Would've. He chose the life of a lone wolf. He huffed. Fuck the pack, fuck their laws, I do whatever the fuck I feel like.

"Eren, get away from it!"
The vampire cringed inwardly of the way he emphasised the last word. She felt paralyzed, from the tips of her hair to the rough padding of her exposed feet. The majority of wildlife were killed off and the lack of blood she had consumed meant that her body would evenly turn off altogether, and it was the best fucking time to do so as well. The dog, food was right there in front of her! She tore her eyes from death and glared at the male wolf, not moving the rest of her body. Wolf-boy picked himself up and collapsed to the earthy ground, hairs and whiskers shrinking back and body contorting until he resembled a human. Brown tussled hair, sparkling greens eyes; a very deceiving disguise. She tried to look away in embarrassment of his nudity but her eyes remained, wary of his next move. "What's your name?" He questioned but only received bared fangs and a hiss of warning as his answer. That's all he'd be getting, a mental voice announced. "Mine's Eren." he told her; after he'd come to the realisation that the vampire refused to speak. "Her name is Mikasa." Blondie stated from behind. The vampire widened her eyes, shocked. Her name was indeed Mikasa. Was he a fuckin... telepath? She didn't know nor wanted to; she just listened to their warm and beating hearts. Eren got up from his fours and walked around her, heading to his phyco-friend. Their conversation was blurry and unclear because her normally outstanding hearing dulled out, leaving Mikasa feeling absolutely fucking helpless. She sniffed and caught a brief scent of rabbit, dead though, which was dangling limply in Wolfie's hands but out reach. The brunette crouched down, and she noted that the only clothing he wore now was a scarlet scarf (still not covering the right place, though). He pressed the dead critter to her lips. "Eat it." He grumbled, maybe because it was his kill that was meant for himself. Mikasa couldn't exactly 'eat' it, her stomach wasn't designed for digesting meat and she drank from still living creatures or ones that were freshly killed. The blood off something that wasn't so fresh was not appetizing at all, but she was ravenous, anything would do. With extended fangs, she bit cleanly into it's hind and sucked out what she could. Carrion and old carcasses had never tasted so good, but there wasn't as much as she would prefer. Almost instantly strength returned to body and her breathing evened out. She lapped at the pooled up liquid gathered at the cut, not wasting a drop, brought herself to a seating position and licked access blood smeared on her lips. Mikasa gazed up at Eren to see him eye the rabbit, grimacing. He's mainly a carnivore, she reminded herself, and he probably thinks this is a massive waste. "You better?" He asked, meeting her eyes.

"Yeah." Mikasa looked down and hugged her knees, her voice shaky from not having to use her vocal cords for what Eren presumed, a fuckton of time. "Thanks." That time her voice was steady but void of emotions.
"No problem." He let out a hand in greeting, and she reluctantly mirrored. When they came in contact, he gasped almost inaudibly. Almost. Mikasa flinched. Her hand was so fucking cold. "Are you always this cold?"
"I'm cold blooded," The vampire retorted. "I've always been like this." She snatched her hand back.
"..." Eren bit back a comeback and stripped himself his scarf, inefficiently wrapped the silky cloth around her pale neck. She didn't shrink back, maybe because she was still weak, but he heard a low growl throughout the uncharacteristically long action. "How does it feel?" He grunted.
There was a long pause. "Warm." She had said it in a way that as if the scarf had also warmed her soul and voice. Eren then unconsciously reached an arm to touch Mikasa again but she hissed with bared, though not extended teeth and scooted up the nearest tree. She then passed out completely, with exhaustion as the culprit. "What do we do now?" Armin, who had watched everything in fascination finally asked, his baby-blue irises looking at Eren. "I don't know," he admitted, "why don't that brilliant mind of yours think of something?"
"My brilliant mind says you need to put on clothes. Secondly, we could accept her as one of us."
"A vampire?" The werewolf reasoned, even though he was way too content with being around her than he should of been. Fuck the pack laws, he reminded himself. "Would she accept that?" He murmured.
"There's no wildlife left, Eren," Armin then showed him the sample of mushroom he'd found earlier, "all the plants are dead or dying. They've been tainted. Mikasa would move out eventually and would start feeding off the people in the city as a result." The mage glanced at Mikasa slumbering on a large branch, claws rooted deep into the bark for security. "It would be for the better." Armin finalised.
"Yeah..." Eren let out an exaggerated puff and strode to the big oak.

A loud cackle thundered and amber lightning spiked through the fuming gray clouds. The heavens opened, flashing a blinding light followed by a streak of lighting which cracked a dent on the floor like a whip. A muscled body of a man climbed out. The opening to the afterlife closed shortly after but not before the man could flick off whoever threw him out with his middle finger. He surveyed his surroundings and spread his crow-like wings, which was the exact same shade as his undercut-styled hair and then folded them back for later use. His blue-gray eyes glittered, reflecting the oncoming raindrops.

"Big ass trees."

~end of chapter 1

This is my first fanfic, so please go easy on me. I'd love a review aswell! Also, please note if you find any mistakes.