"This is just fucking great!" Zaku growled to himself. He tried to get up but the pain in his arms was way too intense.

Darn it.

He thought as his body slumped back to the ground. He couldn't believe that he'd been caught out by that bastard. Out of the corner of his eye, he saw that he wasn't far from Kin, who was still out cold.

Guess I hit her with more force than I intended.

A wave of guilt tore through him. He and Dosu hadn't really been going to kill her, they had been banking on the Leaf girl getting scared enough to leave their team mate's body. "It looks like you're the only one left. I hope you make things more interesting than your friend did." Zaku's eyes widened. Dosu! That bastard was going to attack Dosu and there was nothing he could do to stop it!.

Shit…if only I hadn't been so cocky we wouldn't be in this mess.

How right you are, pup.

What the? Where'd that voice come from?

No time! If you want to stop that monster you need my power!

And with that, a feeling unlike anything Zaku had ever felt flowed through his body. He gritted his teeth in pain as he felt the torn muscles and broken bones heal themselves but the grimace soon changed into a smile as he got to his feet.

This power...I feel invincible…like I could take anything on.

"ZAKU!" Dosu shouted, trying to work out what the hell was going on. Zaku had both his arms broken, there was no way that he should be standing. Then there was that chakra. It wasn't the normal chakra that his team mate usually gave off. It was older and far more sinister. Not to mention that his eyes had changed. Instead of the usual ink black, they were now a burning amber with a black slit for a pupil and glowed with bloodlust and anger. Dosu shuddered. They weren't normal eyes.

What…what is this? Zaku...what's happened to you?

Suddenly Zaku vanished and reappeared behind Sasuke at a speed that Dosu hadn't believed to be possible. "Boo." Sasuke cursed and whirled round but Zaku was quicker and slugged the Uchiha before he could even think of a strategy.

"SASUKE!" The pink haired girl screamed as Sasuke went flying into the huge tree behind her. Dosu and some of the other genin winced when they heard several of the Uchiha's ribs crack from the impact.

"How'd you like that?" Zaku shouted, making shivers run up Dosu's spine. His voice had changed. It was deeper and echoed, as if there were two people speaking at exactly the same time and the other was not human. Sasuke on the other hand was enraged that a weakling was on the same level as him.

"I'm not through yet! Fire style, Fireball jutsu!" Zaku just laughed at the huge frieball that was hurtling his way and made familiar hand signs.

"Slicing Sound Wave!"

That isn't going to work. Not against a fireball of that size.

But to Dosu's amazement the fireball was cut in half so that the flames brushed by Zaku without touching him. Sasuke roared in anger and launched himself at Zaku just as the Sound Genin's own feet left the ground. The explosion of chakra and killing intent when the two boys' attacks met was unlike anything that Dosu had encountered in his life. Even when he watched the Sound Five fight. By this time, several of the Leaf Genin had retreated into the bushes except the two in the tree and one of the Uchiha's team mates. The blonde haired loudmouth in the ridiculous jumpsuit who was watching the fight with a focus that the mummy Sound nin didn't think him capable of. There was a cry of pain as Sasuke hit the ground, quickly followed by a foot in his gut.

Zaku's making mincemeat out of Sasuke. But how? The only thing that would be strong enough to beat the power of a curse mark would be…but that's impossible. There's no way that Zaku would have access to demon chakra. Right?

Zaku couldn't believe that he was actually kicking the Uchiha's butt as he somersaulted away from his body and landed a short distance away. It seemed like a dream. A very good dream.

Pup! You've got to finish it before he draws on more of that power.

The same voice that he'd heard before shouted as Sasuke weakly got to his feet and the purple chakra covering his body started to get even more denser and brighter.

How the hell am I supposed to do that?

What you've been doing for the past five minutes you brainless idiot! Beat him senseless!

Growling at the insult, Zaku quickly made some hand signs that had somehow just popped into his head. "Fire style, Burning Wolf Fangs!" As soon as the words left his mouth, small jet black fang shaped flames shot of his air cannons. Zaku felt a rush of truimph when a few of them hit the Uchiha, making him cry out in pain.

There's my chance!

"Take this!" Zaku shouted, hurtling towards Sasuke and slamming a fist into his stomach with all the strength he could summon. Sasuke spat out blood before slumping to the floor and Zaku watched as the flame like marks receded and the sharingan red in his eyes faded to black before they slid shut.

Nice job.

The voice said and the strange power rush sarted to slowly ebb away, leaving him drained and feeling a little sick by the time it had fully gone.

Sorry if the fighting scene's a little crap. I haven't written many fight scenes and I've done my best to improve it.

Next time, Hatred and the truth revealed!

Oh and while I like reviews and constructive criticism, I do not appreciate flames. They are not helpful and can damage a writer's self confidence. Thanks!