Operation Code 13-1300

"Yukina?"

The girl looked around at the sound of her name and saw a hand on her shoulder. She looked upward and saw the worried brown eyes of her friend and, unfortunately, teammate. Yukina tried to smile to reassure her friend but it was difficult to do so in such a horrible place.

"I'm alright, Keiko," she replied in a quiet whisper. They weren't supposed to remember their names from before and if anyone heard them using them, they would be punished.

The brown eyed girl nodded and sat back in her chair while Yukina marvelled over how they both had changed. Ten years they had been in this place. Maybe not the house per say but in this organization.

Yukina had already been in the organization for a month when Keiko arrived. Back then her teal hair had been black and her eyes a calming blue. Today, she still hated looking in the mirror to see those red orbs staring back. Keiko also had changed. Her hair had grown longer and often rebelled against being cut. But the biggest different were the stripe and triangle tattoos that marred the girl's face and arms.

She stroke the arm of her coat as the memories came back. Without looking, Yukina could recall the shape of every scar she had received from the burns that had come from her first 'success.' That was the day the sutras, or so called 'blessed papers' finally reacted against her power. The day that she made the unwanted jump from Yukina, normal girl, to Ice Maiden, Demon World's tool. It was also the day her eyes and hair changed colour and her chances of being rescued vanished. Now that she was a success there was no way Demon World would let her leave.

Weeks later, Keiko joined her fate as the girl took the name Mazoku. Since then they had travelled from town to town carrying out Demon World's bidding. Most of the time it was watching shipments of hiruseki stones, rare radioactive minerals that share the shape of a small spherical gem. A single stone could power a city block for about five year. Many together could power a small doomsday device. Other times the girls were assigned to escort wealthy man who joined the Black Book Club, a notorious organization filled with men whose sadistic appetite was as deep as their pockets. Until now, the girls had never been asked to do anything truly criminal.

However, merely a few weeks ago Demon World's latest operation to test a new device was thwarted. The device was designed to send out radio waves using frequency modulation that would control a human's mind and cause them to develop a taste for destruction, violence, and murder. When the test failed and the device was destroyed by an Underworld Team, Yukina, Keiko, and the leader of their team became assassins. At least, that was what Yukina assumed was going to happen. They had been called to the basement of their house to receive their latest mission. A large screen covered the far wall and three chairs were place before it. Yukina sat in the middle chair with Keiko on her left and the leader on her right.

Yukina looked at their leader to see if the girl had any clue why they had been called. The girl was facing the screen giving Yukina a profile view of the girl's face. With her brown curly hair and deep blue eyes, she could have been considered beautiful but as Yukina's senses told her, the girl was dangerous to get close to. Even as a teammate.

The screen clicked on and the silhouette of a man appeared on the white screen.

"Team Zhu," a computer generated voice said. "A few agents from Underworld are becoming a problem. In our files they are called Agent Seth, Loki, Hercules, and Jimmu. However their real names are Shuichi Minamino, Yusuke Urameshi, Kazuma Kuwabara, and Hiei Wakahisa. Make sure they never interfere again."

As the screen faded to black, Yukina felt her eyes widen. It couldn't be the same boy from yesterday. No real agent would make that mistake… would they? Yukina glanced over at Keiko for opinion and the girl bit her lip, clearly signalling she didn't want to believe it. After they had returned from the skate park, Keiko had mentioned in hushed tones how the two boys reminded her of friends she used to have. If they were the same boys, they would have to kill them.

Once again, Yukina tried to flash Keiko a reassuring smile but she couldn't get her mouth to move. Her own worry was too great. They still had a chance of escaping Demon World as long as they didn't do anything criminal. If they killed those boys, they would never be able to escape and if Demon World went down, so would they.

Yukina found her silent conversation with Keiko interrupted as their leader stood.

"You heard the man," she said. "Let's go see what we can learn about these clowns."

The other two girls rose and followed the girl out of the basement. The house they were living in was a two story with a basement. Two bedrooms were upstairs and Keiko and Yukina had decided to share a room. On the main floor were a kitchen, a washroom, a living room, and a kitchen. All the walls were bare and the kitchen was the only room with any furniture. A table with three chairs and a computer desk that held the only phone in the house, a fax machine, and an ancient computer. The fridge needed restacking, Yukina remembered. She would have to ask the leader for permission to refill it before they ran out.

The girls went to the computer and the leader sat down. While Yukina and Keiko watched over her shoulder as the girl typed in the information necessary for them to access the Demon World Files. Their leader was the only one out of the group who knew any of the codes to access any information they needed. She was also the only one who was able to use the computer, phone, or fax as a special code was needed to be entered to use any of them.

Everything was in code or needed a code Yukina suddenly reflected. One of her first 'lessons' were to learn the codes that were necessary to communicate in the organization. At first she had wondered why they could not simply speak normally. Now she understood that everything was in code so that if Underworld managed to hack into their system they would not know where to look for the information they wanted. She always wondered why Underworld could not trick a Demon World employee into explaining the code but the longer she stayed, the more she understood that a Demon World employee could never betray the organization. The consequences would be too much to handle and they quickly squashed any feelings of morals.

Though the computer was old the pages loaded quickly and the leader typed in some more information. A folder appeared on the screen labelled, "Underworld agents." The leader clicked this and typed in the code names they were given. The boys' files appeared on the screen and they started to read and learn about their enemies. With a sinking heart, Yukina realized she recognized the not so handsome face of Kazuma Kuwabara. As they flipped through the boys' files they also saw pictures of them from when they were children. Keiko nearly made a noise when she saw a picture of Kuwabara and Urameshi playing with a little girl. Yukina reached over and took her hand to comfort her. They both knew these boys and knew what they had to do.