Arashi vs. Uchiha
A lone figure, bathed in white, stood in the gloom.
"You're not Naruto." It said.
Kenshin said nothing, but tightened his grip on his blades. He steeled himself for the battle to come.
"If I were you, I would leave, now." It continued.
"My quarrel is not with you…"
Kenshin kept walking toward him.
The figure faced him, and an electric current raged through his body, arcs of lightning jumping across his skin.
"I told you to leave."
Electricity played across his fingers, and it slowly formed into a single senbon.
"Now, die!"
He threw the white-hot needle at him, and it struck the forehead of Kenshin's mask, and dissipated across his mask like a white wave.
"Interesting." muttered Sasuke (of course it was him).
Kenshin suddenly spoke, in a flat, disinterested tone as he approached him.
"You wear their coat with such pride, don't you, Sasuke?"
Kenshin slowly watched his sword start to glow white. Those arcs leaped from his left arm onto his sword, and where they struck, the steel glowed.
That's not good…. He thought to himself.
Sasuke then turned to face him.
"What right do you have to judge me?" he asked, and as Kenshin watched, he saw the eyes slowly turned red.
"I have every right to judge what you do, even now, as you plan to destroy Konoha, the village that sought to protect you, and the people she bears within her…" Kenshin replied.
Sasuke faced him fully, his eyes bearing the pride of the Uchiha clan, the Sharingan Eye.
Kenshin gripped his blades, and prepared for the inevitable strike.
"Shut up!" yelled Sasuke.
He lunged, blade cocked for a piercing strike. He aimed directly for his heart.
Suffice to say, it didn't hit the mark…
Kenshin had moved Rudra directly into the blade's path.
Sasuke already knew the outcome of this, and kept the blade going.
Metal struck metal, and sparks flew. The electric glow of Sasuke's sword vanished as it dissipated once more across the edge of Rudra.
"Impossible…" muttered Sasuke.
"Around me, you start believing the impossible…" smiled Kenshin under his mask.
And once more, the swordfight resumed.
The two fighters weaved a web of steel around each other, their swords singing their iron song.
Whenever Sasuke slashed, Kenshin parried effortlessly, while Sasuke could only avoid his strikes through his Sharingan. And Sasuke could predict Kenshin's moves to a limited degree, and Kenshin could not easily strike him.
A deadlock.
After a while, they stopped.
"You're good…" huffed Kenshin.
"…for a pussy."
At that, Sasuke formed a few handseals. And almost immediately after that, the air felt like it was getting faster, not hotter…faster.
All of a sudden, arcs of electricity went in all directions, and struck every part of Kenshin's body. A white-hot wire ran straight through his veins.
He felt weak in the knees, but knew he had to hold on, he had to keep fighting…
As Sasuke was unloading the whole brunt of Chidori Nagashi on his opponent, he knew this time, there was no escape.
"Who you calling a pussy?!?"
Chidori Nagashi was essentially a wide-scale Chidori. It projected the electrical properties of the Chidori outside of his body and onto the environment.
And right now, Kenshin was feeling its full power being unloaded onto him.
Sasuke saw something different in his opponent's eyes. It was turning a luminous gold…
He stopped Chidori Nagashi, and focused his chakra back into his blade, Chidori making it glow.
"That's it…Uchiha." said Kenshin in a cold voice.
"The gloves come off…" he said and grabbed his mask, and flung it aside.
Sasuke could now see his opponent's face. His rather sharp features gave him a hard, battle-weary look. And the eyes, they glowed a shining gold.
And as Sasuke could see, they had markings on his iris similar to a tempest.
Like his own Sharingan…
"Let's rock!" said Kenshin as he charged straight at Sasuke.
"Don't you know that charging at me won't work?" said Sasuke, mockingly.
He performed his handseals, and let loose another Chidori Nagashi, fully prepared to watch this fool writhe in pain.
"Tempest Eye Technique! Jutsu Reversal!" said Kenshin.
At once, Sasuke felt fire rage through him, tearing through his insides like a hook.
"What the?" gasped Sasuke.
"That's right. How does it feel to a thousand volts course through your body?" said Kenshin.
Sasuke writhed in pain, a cruel irony…
"Your blasted bloodline sent the one person I loved to her grave!" yelled Kenshin.
What is he talking about? Thought Sasuke.
"Who're you t-talking about" Sasuke said through gritted teeth. Pain wracked his body in waves.
"In the future…25 years from now, your own cursed blood will rat me and my team out to the bad guys, resulting in the love of my life's death, and a bullet through my skull!!!" said Kenshin, rage evident in his eyes.
Sasuke could only shut his eyes, and grit his teeth in agony.
Kenshin slowly brought his blade to rest at Sasuke's temple. He could feel it's cold tip almost piercing his skin.
"I could save myself all that trouble by ending you and your curse forever…"
Sasuke had to act.
"Mangekyo Sharingan! Amaterasu!"
Black flames appeared on Kenshin's hand, and started to crawl toward his shoulder. Kenshin screamed in pain.
Sasuke felt the pain slowly ebb, and then vanished completely. He stood, and grabbed his sword from the ground.
"YOU BASTARD!" yelled Kenshin. The flames had reached his shoulder, and his arm was smoldering.
"I'll teach you to insult my bloodline!" spat Sasuke.
Kenshin felt that the flame would engulf him given the chance. He knew this, for he had seen this jutsu before, 25 years from now.
"Flame Capture! Ravenous Agni!"
Sasuke watched as the black flame was slowly sucked into the red blade, almost like it was eating it. He felt his strength slowly desert him.
"Cease Amaterasu! Agni will drain you of the fire till you run out of chakra, or when you're dead." said Kenshin.
At this, the black flame ceased, and vanished completely.
Sasuke stood, defeated, drained, but still standing. Kenshin, slightly burnt, mask removed, coat torn, walked over to him, and told him…
"Tell your kids, years from now, that Iori Hiryuu, is not someone to be fucked with."
Sasuke looked angrily at him, but nodded in reply.
"Good." And then, Kenshin decked him on the chin. He heard something break inside Sasuke's mouth. He hit the floor hard.
"Hope you're happy, Detective…" he said to no one in particular.