Kaz looked up to see Kyre staring at him with cold coal black eyes, the same eyes as his, his family's eyes. He gridded his teeth, then he smiled even through the pain.

"It's a good thing I used my jutsu to block that attack or else that would have really hurt, and we don't want that do we?" he asked smugly.

He saw the confusion in Kyre's eyes. His new jutsus were really bugging her. He kept his grin on his face. He stared into Kyre's eyes, and then suddenly, he had a flash back, staring into her eyes, he remembered a day, fifteen years ago.

"Hey dad," Kaz called.

"Kaz, where were you son? I was looking all over for you." His dad said, slightly annoyed.

"I was…um…" Kaz stumbled over his words trying to find a good excuse. He had been with his team-mates getting into trouble. He needed a good excuse for being out so late at night.

"I was…um...with my team-mates playing ninja tag around the village," Kaz said almost convincible.

His dad stared at him, seeing if he could trust him or not. Then he smiled.

"Well, whatever you did, it can wait. I have some good news for you."

"Good news?"

"You're going to have a little brother or sister," Kaz's dad said happily.

Kaz stood frozen; he had to think for a moment. A sister…brother, impossible, he didn't want a sibling, no way, no how. He glared at his father, full of annoyance.

His father looked at his confused.

"Aren't you excited?" he asked.

"No."

"Why not?"

"I don't want a baby brother or sister."

"Why?" his dad had asked again.

"She or he…whatever will get in my way."

"How would a baby get in the way?"

"It will want to play with me non-stop."

His dad laughed.

"You know that the baby will be with us most of the time. Until he or she is five at least. By then, you'll be troubled by missions here and there. You'll be a chuunin."

Kaz thought a moment, that was true. He frowned; he wasn't going to win this battle with his father. He hated it when he lost an argument.

His dad laughed at his son's defeated look. He ruffled his hair smiling.

"Don't worry son. Go inside now, it's time for dinner."

Kaz came back to reality with a start. The flash back had only lasted a second yet now…he had a different thought in his head. Why hadn't Kyre killed him while he wasn't paying attention?

Kyre stared at Kaz, totally confused. She didn't know why he was still alive or how he was able to keep that stupid grin on his face. She was watching him, waiting for him to attack. Then their eyes met. Kaz suddenly froze, his eyes locked with hers. She didn't get that either. Was it some kind of jutsu? His eyes looked blank. Had he lost it or something? She was so strung up in thought she hadn't bothered to hurt him.

Yamen was next to Kyre, ready to attack at the slightest movement. He was tensed, ready to spring. This may have sounded stupid to other jonin, but Yamen wasn't a leader to Kyre, Kyre was a leader to him. He followed her, trusted her judgment. He looked up to her like a student looks up to a teacher on the first day. Whenever he had a plan and he was having a team discussion, he would always ask Kyre if there were any flaws. If there were, he would ask how to fix them. Kyre was a natural leader and he respected that.

He waited for her signal, for a sign of any movement. Sometimes that was hard for him, sometimes she would be so fast that he couldn't keep up with her. He laughed inside, this whole sensei and student thing was all flipped around.

Kaz got up and brushed himself off. He was working on hiding the unbearable pain inside of him. He let the pain flow through his body for the smallest second gritting his teeth; he felt every muscle scream for him to lie down; he defied his entire being to stand up. Then a bloodlust went over him, he saw red around every person, clone or not. He wanted Kyre to die, he remembered what he had trained to do, and he wanted to fulfill his quest. No matter what the price, he would do it. He looked into Kyre's eyes with hatred.

Kyre stumbled for a moment; she had her eyes locked on Kaz's. His expression had changed from confusion to hatred. She flinched inside; she thought that if she had ever had any family left, they would be a family, a family that loved each other… I guess I was wrong… she thought to herself sadly.

Yamen looked at Kyre confused. She and Kaz hadn't done anything for the past three minutes. What was going on between them?

Kaz jumped at Kyre with all his strength, knocking her to the ground. He heard the air pushed out of her, he grinned. He dug his nails into Kyre wrists until they bled. He heard Kyre gasp with the pain.

Kyre narrowed her eyes and kicked upward; sending Kaz into the air. She stood up shaking.

"Yamen, go ahead, I'll catch up." She commanded him.

Yamen stood there confused. Why didn't Kyre want help? Then he understood. She didn't want him to get hurt, she knew that Kaz was powerful and she didn't want him to be in danger. He was sure that she would be fine. He nodded and jumped away. He heard something moving behind him and looked back. It was one of Kyre's clones. At least he would know if she really needed help.

Kyre rubbed her now steaming wrists. They were healing quickly; after all, they were only some small cuts. She watched Kaz's movements. It wasn't…wasn't planned out. He was just going with the flow. Bloodlust was the only word she could think of. He was crazed with bloodlust. To think that this…adult compared to her was in the middle of a bloodlust scared her. He had so many more years of training than she did; he had so many different jutsus. She couldn't possibly win. Then she took into account that her wounds from their last battle had barely healed at all. She was weakened.

Kaz crouched on the ground like a wolf ready to spring at his prey. He couldn't wait to see the blood fly. He smiled when he saw Kyre's almost completely hidden fear etched upon her face. So she was scared after all. Good, exactly what he wanted. The fear gave him more energy. He leaped at Kyre ready to tear her apart when he tripped. Something was pulling at his legs so he couldn't move. He twisted around to see one of Kyre's clones holding him there, he snarled. He couldn't believe he had let his guard down! Stupid, stupid! He yelled to himself. He kicked the clone in the face and watched it disappear in a cloud of smoke. Then he launched himself at Kyre, grabbing her throat in his hands and digging his nails in.

Kyre didn't try to resist, she looked into Kaz's eyes, so like her own yet so different. She felt the pain in her neck and she choked, she needed air and badly. She felt the blood trickle down her neck, hot on her cold skin.

She tried to gulp down a little air but Kaz had his iron strong hands clamped around her throat, obviously he wasn't going to let go, only squeeze harder.

Then it hit her, if she waited she could get the Hachibi to come into play, she wouldn't have to feel guilty about killing him if her emotions were clouded by hate. It was a risky idea, she herself didn't like it but it was the only way. She didn't want o use any jutsu on her brother, he still was her family. Okay maybe he was evil and trying to kill her…but he was still her brother.

Kaz didn't understand; why didn't Kyre stop him? Did she want to die? Or was she too weak to stop him? He was many years older than her that might have been a good reason. The only thing that nagged him was that he knew her title 'Dark eyed demon'. She was one of the most powerful people he had ever heard of coming for the Fire Village…well….maybe besides him.

Kyre closed her eyes waiting…hoping her plan would work. Stay calmit's no big deal…she thought to herself.

Kaz grinned; he could feel Kyre's heart beating at an unusual speed. Then Kyre opened her eyes with such speed, Kaz hadn't seen them close. He flinched and jumped back. Kyre's eyes were compound with orange-gold irises. He knew those eyes; he had seen them the day his parents had died. He narrowed his eyes, he had pushed her too far, or was it planned, he didn't know.

Kyre grinned. She had scared Kaz enough to make him jump off her; she stood up rubbing her neck.

"That hurt you know…" she complained almost jokingly.

Kaz glared at her.

"You'll be in Hell by the time I'm finished with you!" he yelled at her, disappearing in a mere second.

Kyre calmly stood there, and then turned around the moment Kaz was an inch away from her. She grabbed his arm and heard a crack, she had broken his arm! She threw him into the ground creating a small crater in front of her. She felt satisfied so far. She was busting him up without even trying.

Kaz held his arm firmly, it was throbbing in pain. He had heard the crack, yup, it was definitely broken. He had learned about healing jutsus and mastered them, creating many new kinds of healing jutsu that didn't cost a lot of chakra but was strong enough to heal his bones. He didn't need a hand sign so he started healing himself right away. The downside was that it took ten minutes to heal fully. He would have to be more careful now that he knew that he wasn't fighting his little sister anymore. He was fighting half a demon.

He jumped away quickly leading Kyre into the denser forest where it would be easier to hide. He did well; Kyre followed him with no thought as if she was following a mouse. Her eyes were locked on her target now. She could have ripped him to bits by now, but she was holding back. He walked backward through the undergrowth, his arm slowly numbing.

Kyre watched Kaz pace backwards. She had no idea what he was up too but she knew she had to keep following him or she would lose him. She walked forward as fast as Kaz was pacing backwards, very, very slowly. She was growing impatient; all this slowness was getting her agitated. She clenched her fists so that the knuckle showed white. Her teeth were bared showing her sharp fangs. She was crouching ready to sprint at any sign of retreat from Kaz.

Kaz stopped after a while, it had been about eleven minutes, and he had wanted to wait an extra minute just for safety. He had ended up in a very dense patch of forest. The trees loomed over his head while the leaves covered the sky. It was almost pitch black making it difficult to a normal villager to see, but for Kaz and Kyre, it could have been under a street lamp. They glared at each other, Kyre twenty yards away, looked like a bodiless pair of glowing golden eyes narrowed into slits.

Kaz noted that if he tripped it would be the end of him; Kyre would take that advantage and destroy him. He crouched down and put his hands to the ground thinking to himself. If I could cut away all of this undergrowth with a single chakra burst, it could possibly reach Kyre and weaken her and stop me from tripping. He let out a burst of chakra out of his palms so that it was as thin as glass and watched it cut through ever kind of brush and root in his way, making the ground as smooth as a dirt path. This would help him in the long run. He watched Kyre wondering if his chakra had reached her, nothing happened. She had jumped into a tree and now he couldn't see her at all. Not a good sign.

Kyre swung down from the tree and into Kaz's chest, feet first in a heart stopping kick. She aimed well but when she made contact, he was replaced by a large root. Replacement jutsu…Why would he use that? She asked herself. She did a flip in the air and landed smoothly on the ground. She gathered chakra in her hands and waited for Kaz to make the first move.

Kaz was sneaking up behind her when he saw the visible chakra surrounding her fists. The chakra wasn't blue, it was black and orange. He widened his eyes. So she's using the Hachibi's chakra now, huh? Well I'll just have to teach her a lesson. He thought with a smug smile. He did one hand sign and then muttered a seal. He waited for Kyre to react to this new jutsu of his.

Kyre stood in the path waiting, why hadn't he come yet? Was he hiding or was he on the run? She sniffed and caught his scent of the breeze; he was close by but not close enough. Then suddenly she felt a jolt of pain rip through her body. It felt like she was set on fire, the pain was so great. White pain filled her brain and she screamed out hoping that the pain would stop. She knew that it was her seal; Kaz had found a way to control her…in a way. If he could make her cry in pain and stand there unable to move from the pain, she was as good as dead.

Her eyes flickered from the golden-orange color to her coal black color. Her fangs started to shrink back to their normal size. The jutsu was making the Hachibi's chakra go back to where it came. She fell to the ground with the feeling of emptiness and pain. She was panting lying on her stomach and feeling cold sweat running down her cheeks.

Kaz walked out of his hiding place and stepped in front of Kyre's face bending down so that he was staring directly into her face. He smiled.

"I guess you're still that little weak girl I knew way back when." He taunted.

Kyre spit in his face. She was furious at him, why didn't he just leave her alone?

Kaz wiped the spit off his cheek. He had a look of pure hatred on his face. He kicked her in the ribs with all the force he could muster adding chakra to make the pain even worse. He heard three loud cracks echo around the trees. He laughed as Kyre coughed up blood and lay motionless on the ground. He could see she was still alive but why not wait till she was stronger to challenge her? Nah… he thought. He kicked her body as hard as possible making her fly into a tree. She lay next to the trees trunk blood forming a small pool around her stomach.

Kaz stepped towards her, seeing the pool of blood growing ever larger. He lifted her body so that she was in a sitting position and laid her on the trunk. He examined the wounds. He had only broken a few ribs, he was curious to see why she was bleeding too. He saw that the wound he had given her in their first fight had reopened and was even deeper. He smiled, his jutsu never failed him.

Thinking his task was done, he got up to leave Kyre to die. Just to be safe and…if she did survive, he might as well make it more painful. He took out a kunai and stabbed it into her arm, penetrating deep into it, and left it there. She didn't react at all. As he started to walk away he looked back one more time to see that Kyre's wounds were starting to steam. Except for the one that was really causing her trouble and the one with the kunai stuck in it. He smiled smugly. This was probably the only night he would ever smile so much. He walked away into the darkness and disappeared.