(Kakashi's POV)
'Harry is the Shinigami?' I couldn't help the doubtful feelings the flitted through my mind. "You seem doubtful of this Copy-Cat. Have you never seen her in battle?" Zabuza taunted.
"As a matter of fact no, I have not. Nor am I sure that I want to." I answered before Harry could.
Out of the corner of my eye I saw Harry flinch. "Shall we get this party started?" Harry said softly, "After all the genin have already started."
Pulling out a pair of long bladed daggers, 'I know I have seen those before,' Harry slid into a defensive position while I stayed on the offensive. Harry, because of her small daggers, would mainly be dodging while I tried to create and opening in Zabuza's defense for her to strike.
Zabuza smirked before using the Hidden Mist jutsu to hide himself.
(Author's POV)
Straining their ears both Jounin had to throw themselves to the ground to avoid getting decapitated. Leaping to her fee, Harry hauled Kakashi to his feet as well, "Hey, Kakashi, can you use your summoning jutsu to restrain him?"
Kakashi nodded and cut himself on a kunai before swiping his hand across his summoning seal addressing the dogs that appeared he said, "You are to find and restrain the missing nin hidden somewhere in this mist."
"Yes sir!" The smallest dog replied.
"Harry do you have any wind jutsu's," just then Zabuza's sword appeared and cut horizontally at them in an attempt to cut the two Jounin in half.
"Do you really think that you two can kill me with just a little summoning jutsu and a wind jutsu?" Zabuza laughed maniacally. Just then the dogs Kakashi had summoned appeared from behind Zabuza and latched onto his limbs and kept him from moving.
Kakashi glanced at Harry before gestering her forward, "Harry you get to kill this one." Harry shrugged and lunged at Zabuza's unmoving form before stabbing him in the heart,
"Good bye Demon of the Bloody Mist." Harry whispered to the slowly dying form of Zabuza.
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AN: Well that went different then how it came out originally on paper but that is just fine. I hope you like the battle scene I don't write them very often. The battle with Haku went the same just with Naruto killing him in the end.