Disclaimer: I own none of the characters from Ga Rei Zero or Mai Hime, I'm only borrowing them for awhile. This introduction has heavy spoilers for Ga Rei Zero, so if you haven't seen it I suggest you skip this story.

Ga-Rei Hime, a Ga-Rei Zero/Mai Hime fusion

The blue-black haired woman staggered along the Tokyo street, the semi-military brown jump-suit she wore splattered with dried blood. She looked weary, bone tired, and her face was oddly pale, as if she had suffered some grave illness. People dodged around her as she walked, almost afraid to come into contact with her.

Tiredly she leaned against a wall, even as her confused mind churned with images. 'I am... Natsuki Kasuga,' she realized, even as she tried to bring into focus the past day or so. Everything was a confused jumble, a twirling mass of images that made no sense to her.

Natsuki shook her head, trying to piece together what had happened. She remembered being with Toru at the cemetary, then both of them responding to a call from the Ministry of Defense. Supernatural forces were attacking the city, and they decided they were needed. They went to the assistance of a Paranormal Disaster Countermeasure Headquarters team, Section One, and helped kill off the attacking class B and C creatures.

Natsuki leaned her back agaionst the wall, the impossible images making a bit more sense. The C class spirits were invisible to the naked eye and were vaguely human. They attacked in groups, and normally Section One could have handled them. Using a special visor they could see them, and modified weapons and Holy Water let the military drive them off. Class B, though were much more powerful, and only one of the beast like creatures devestated the unit. Only specially trained fighters could handle them...

Yes, Natsuki could feel parts of her mind opening up again. She was a specially trained agent of the Ministry of Defense. Chosen for her ability to see spirits she was trained to help destroy them, using her modified motorbike to throw up barriers and special handguns to kill them. She worked with a team out of a mobile command center.

'So where the hell is my team?' Natsuki thought crossly, trying to dredge up what happened in her memory.

There had been another class B... a even larger one, much more powerful. To stop it the team had lured it down beneath the city, using the water pipes to generate enough Holy Water to weaken it for their weapons to destroy it. They had killed the creature, celebrating in a dry section of the underground when... what happened?

Natsuki shook her head as she let herself slide down against the wall, trying to break a barrier to her memory. Something bad had happened, something so terrible she didn't WANT to remember it. But she had to, she had to find out what happened!

A flash of a blade, and a man's hand dropped to the floor. They were all paralized, stunned by the sudden attack that came from nowhere. Another man cut down as they realized they were facing a Category A. They tried to call to base for help only to have their cheerful communication officer tell them they should all die now.

Then she SHOT herself over the radio.

Toru grabbed her and hustled them to another part of the chamber. As they ran Natsuki felt something cut her, then felt the horror of seeing her own head fall off her body.

"Ack," Natsuki made a choking sound as her hand grabbed her neck. She could feel a... scar, almost, circling her neck. "No no no no no..." she moaned weakly in horror, her eyes as wide as they had ever been.

Toru was cut down, then the woman she recognized as Yomi Isayama picked up her severed head. The black haired woman studied her thoughtfully before noting, "It's no fun if no one knows what happened." Shockingly she pressed her lips to Natsuki's, forcing some kind of dark power to flow between them.

Natsuki gasped as her head was reattached to her body, the darkness flowing through her veins, making cold flesh move once more. "Why...?" she croaked.

"Because I want them to know how they betrayed me," Yomi smiled, the gem on her forehead shining, "and that nothing will save them."

Back in the now Natsuki felt tears trickling down her face as she saw her friends die, cut down by a former ally. "I don't care what you are," she muttered, forcing herself to her feet as a dark rage filled her, "I swear, I'll kill you!"

To be continued...

Notes: This will become more of a crossover with Mai Hime in the second chapter. I'm still debating who I'll feature, however... should Natsuki end up with Shizuru, or possibly Mai? Or maybe even Nao Yuuki. Let me know what you think!