Disclaimer: I own none of the characters or situations from Neon Genesis Evangelion, they all belong to Gainax. This fanfiction will contain violence, sex and other nastiness, so if that's not your thing, I'd suggest skipping it.

Demon City Tokyo: A Evangelion Alternate Universe

News reporter Mayumi Yamagishi nervously sat in the waiting room, then picked up her recorder. Activating it she murmured, "Notes, June 17th, 2018. 2:00 pm. Waiting in the offices of NERV, the Japanese demon fighting agency, I wonder how we found ourselves in this situation? On September 3rd, in the year 2000 the arrival of something extra-dimensional destroyed Antarctica, flooding much of the world and disrupting the climate. Wars broke out, then were quickly ceased as a unknown force began killing humans and animals randomly across the world."

Mayumi looked off into the distance, at the sterile waiting room with white walls, a steel table and a few chairs scattered about. "Conventional firearms were useless," she noted, "even canon fire. Yet strangely bladed weapons could kill these things, if you could get close enough. Governments around the world scrambled to find a way to kill the monsters, and when Yui Ikari emerged with a solution, there was much rejoicing. Of course, the joy turned to horror when we finally saw what she proposed."

Footsteps out in the hall caused Mayumi to stop recording, instead concealing the device in her pocket. After a moment the door opened and a younger woman entered, her red-orange hair flowing down her back. She wore a simple black military style uniform, her expression intense and serious.

"Miss Langley Soryu?" Mayumi asked politely.

Asuka Langley Soryu nodded politely, "Yes." She walked to the other side of the table and pulled out the chair as she said curtly, "I understand you're here to interview me?"

"Yes, I an," Mayumi agreed politely. She took her recorder out, "Do you mind if I...?"

With a slight smile Asuka said, "Go ahead. I was listening to you talk over the security feed before I came in."

"You can't...," Mayumi looked outraged.

"Oh please," Asuka waved that off as she said, "you signed away your right to privacy when you came in here."

Mayumi wanted to argue with her, but Asuka was right. Hell, it probably said that exact thing on the agreement she had signed to get into the underground base. She puffed out a breath and tried to relax, running through her questions in her head. "Do you prefer Miss Soryu, Langley or Zeppelin?" she asked after a moment.

"Just Asuka is fine," she said wryly as she explained, "I'm not into formality as much as my Japanese hosts are."

"All right," Mayumi agreed. "You were the second demon hunter recruited by NERV through NERV-Germany, and have been the longest successful hunter. What has lead to your success?"

"My natural talent," Asuka said with no modestly. She smiled a bit sadly as she conceded, "And seeing the First Child's mistakes helped too."

"The First Child was Shinji Ikari," Mayumi remembered, "what mistakes were those?"

"He tried to control his youkai servant too lightly," Asuka said flatly, "that's why it turned on him eventually." She paused and added quietly, "Poor bastard."

"Youkai," Mayumi nodded thoughtfully, "that's what the NERV branch here calls the half demon servants, right?"

"Yes," Asuka agreed. "In each country where NERV operates they give them a different name, but they're all pale, red eyed human looking dolls to destroy demons." Darkly she added, "Just like one did Shinji."

"That was a... Kaowru model, right?" Mayumi remembered the good looking demon boy, "And you use a Rei model?"

"Yes, Shinji was paired with one of the first Kaworu types. He was charming, too charming, and I warned Shinji that he was up to something," Asuka grimaced. "I use a certain Rei clone," she added calmly. "I find they're easier to control and less tempermental than the other types."

"Are the rumors true that they're based on Yui Ikari's DNA?" Mayumi had to ask, even though she suspected Asuka was forbidden to answer.

Asuka shrugged, "You know I can't confirm or deny that."

Mayumi smiled, "I had to try." She realized she was near the end of her questions, "What do you think of Japan, Asuka?"

Asuka snickered softly. "I'd like it more if I could stop all the people making dojin of me in my combat suit," she admitted.

Mayumi had to chuckle, "Well, it is skin tight combat wear, and you are a famous public figure. I think it's kind of expected."

"Bleh," Asuka made a face.

Before another question could be asked a soft whooping sound of a alarm rang out. "What is...," Mayumi looked at Asuka questioningly.

"Demon attack," Asuka got up, the humor in her expression leeching away to be replaced by calm seriousness. She pushed back her sleeve to reveal a watch/communications link of military type, "Major Misato, what's our status?"

A woman Mayumi assumed was Misato replied calmly, "We're detecting a standard manifestation in Tokyo city limits. We'll have the transport readied in five."

"I'll get Rei, change into gear and meet the driver in seven minutes or so," Asuka promised then disconnected the link.

"Miss, I'm going to have to cut this short...," Asuka started.

"Take me with you," Mayumi begged as she got up out of her chair. "Please, no one's seen a live hunt, it could really help public support of NERV."

"It could also get you killed," Asuka commented as she hurried out of the meeting room and down a brightly lit hallway.

Mayumi hurried after the nearly running woman, "I'll sign every release you need."

As Asuka reached the changing rooms she activated her communicator and asked, "Put me through to Commander Ikari."

After a moment a calm but remote voice replied, "Yes, Asuka?"

"I've got a reporter here," Asuka opened up the door revealing her orange and red armor hanging on a hook along with what looked like several scaled down broadswords, "she wants to come along, and will sign any waivers and releases we ask for."

"Hmm," Yui Ikari sounded thoughtful as she considered the idea, "Miss Mayumi Yamagishi, you do know this will be dangerous? We do not have perfect methods for stopping the demons yet."

"I know," Mayumi answered her sincerely, "I'm aware of the danger, but it's something I have to see for myself."

"All right," Yui said briskly, "I've made a voice log of this conversation. You may accompany Asuka, but please be careful."

"I will, ma'am," Mayumi said sincerely.

"Asuka, I believe armor prepared for Shinji is still there. It should provide her with some protection," Yui noted.

"Right," Asuka sighed off, then informed the transport they might be a minute or two late.

Mayumi was astonished how easily Asuka stripped her then bodily pulled the cool blue cloth up her body. The clips were secured at her neck then a switch was hit on one wrist, causing the suit to retract to become skin tight. While combat armor it was light and flexible, and Mayumi was a bit embarrassed at how it revealed her more developed figure.

"Do you know how to use a weapon?" Asuka demanded as she pulled down a broadsword in it's sheath and slung it over her shoulder, the carrying strap across her chest.

"No," Mayumi admitted sheepishly.

Asuka took down what looked like a large, long knife, "This will do, but try not to draw it unless you see me getting eaten or something."

Mayumi paled as the seriousness of this began to seep in. "Right," she belted the weapon at her side then grabbed her recorder before hurrying after Asuka down the hall. They headed into a elevator that raced up at bone aching speeds, reaching the launch bay in less than half a minute.

"Aoba," Asuka demanded as they hurried to the modified van, "time!"

"Eight minutes, thirty seconds," Aoba noted, the long haired young man smiling wryly. "I've loaded Rei II into the cage, as requested."

"Is the incident location in the on-board computer?" Asuka asked calmly as she hustled Mayumi into the passenger side them hopped behind the wheel..

"Yup, ready to go," Aoga nodded seriously. As they peeled out he saluted, "Good luck!"

"Yeep!" Mayumi yelped as they raced out of NERV headquarters on the surface of Tokyo then jerked into a hard right turn. As she held on to seer life she felt a presence, turned and found herself staring into calm red eyes.

"Operative Soryu," the silver haired young woman sitting behind a thick security mesh looked at Mayumi curiously, "what is another operative doing here?"

Asuka looked at her, "She's not a operative, she's a guest. Rei, meet Mayumi. Mayumi, Rei is my youkai assistant."

"Partner," Rei corrected mildly, sitting cross legged on the truck floor.

"I never realized youkai would be so human," Mayumi blinked.

"I am not human," Rei corrected her calmly as she said, "you see, my DNA is over sixty five percent demon. If it were not for my programming and this protective cage, my first instinct would be to tear you apart."

Mayumi paled a bit, "Right."

"And her other instinct would be to breed with you," Asuka noted as they pulled into a side street, police tape and army units spread out to maintain a perimeter.

"Ehh?!" Mayumi yelped as they were waved through the police line.

As Asuka was parking the car Rei looked apologetic. "The demon kind want to procreate to save their species," she explained as Asuka released her from her cage, "they think that mating with humans will do this."

Asuka calmly drew her sword, looking around them warily. She looked over at Rei and asked, "Which way?"

Rei closed her eyes a moment, taking on a peaceful look that Mayumi found oddly disturbing, considering what she had just heard. "There," Rei pointed up into a nearby building as she said, "it is hiding there."

"I hate when they hide inside," Asuka cursed as Rei lead the way inside, Asuka following and Mayumi in the rear. "It always makes things more complicated," she added as they went over to the stairwell then upstairs.

"Uhm," Mayumi had to ask, "why is Rei taking the lead?"

Asuka gave her a look like she was an idiot. "We're hunting monsters that are much stronger than you or I," she explained dryly, "only Rei's half demon strength would let her survive."

"Oh, right," Mayumi looked sheepish as they pounded up to the second floor, where Rei did her impersonation of a dowsing rod again.

"This floor," Rei said as they exited the stairway into a central hallway.

Mayumi was awed at how they moved with military precision, Rei leading but Asuka always ready with her drawn sword. There was a strange closeness between them, a sense that they knew each others thoughts, maybe from how long they had worked together.

"There," Asuka hissed as they took in the misshapen thing in one of the computer labs. The demon was basically human shaped, but lopsided and bulging with extra muscles making it's shoulders and legs twist oddly. A elongated arm tore at a dead body, jerkilly lifting a chunk of bleeding meat up to it's mouth.

Mayumi fought the urge to be sick as Rei burst from cover, running at inhuman speed towards the monster. It swung at her wildly but Rei dodged, getting behind the powerful beast. She gracefully kicked the kneecap out, staggering the monster, then she got a firm, wrestling style grip on it.

"Now!" Rei yelled as she fought the thing to keep it still.

Asuka charged in, dodging under a flailing arm and swinging with a smooth grace, sending the beast's head flying free. AS it convulsed Rei bounced away as Asuka struck again, driving her sword into it's chest until they heard a sound like a crystal breaking. After that it shuddered and then was still, collapsing backward.

"My god...," Mayumi said weakly, watching the thing's body begin to smoke oddly while Rei walked towards it cautiously.

"Come on," Asuka took Mayumi by the arm, walking towards the doorway.

"Wait," Mayumi looked back only to gasp as Rei tore a strip right off the demon and began to eat it with a expression of deep revulsion on her face. "WHAT IS SHE...?!" she yelped.

Asuka calmly yanked Mayumi out into the hall, away from the eating. "Rei isn't human," she reminded the other woman firmly, "her biology... is a mess, literally. Half our food she can't eat, the other half has no nutrient value to her."

"So she has to eat demons to live," Mayumi murmured softly. Her mind raced, "What happens if we ever defeat these things?"

"She'd better hope we come up with something she can digest by then," Asuka said flatly. She looked at Mayumi, "Are you going to include demon eating in your story?"

Mayumi thought about Asuka and Rei, the odd gentleness that existed between them no matter how different they are. "No, I don't think so," she admitted, "I don't think the public needs to know."

Asuka's expression softened, "Thank you."

End

Notes: This is a 'Silent Mobius' meets 'Evangelion' fic, more or less. Instead of SEELE releasing 'Second Impact' they triggered a demon invasion, one that promptly wiped them out as well as doing serious damage to humanity.