Author's Note-Well, I am finally posting more to The Experiment. I don't own RK or YYH. I wish I did. But I do own Shadow, Amori, and any other original characters in here. Oh, and this is the chapter that RK is introduced.

~.~ means thought-speech

Enjoy.

"Back so soon, Shadow?" Amori asked.

Shadow glared at him. "You didn't say that one of them could use reiki in the form of a sword!" she accused him.

"Hm. . .you're right, I didn't." Amori replied distractedly. "Well, I'm done." He looked up at the two boys chained to the wall. "Well, I suppose this is farewell, Hiei and Yusuke." He said.

Two things happened at that moment: The door burst open and Kurama and Kuwabara ran in, stopping as the professor pressed the button and the beam powered up, firing at Yusuke and Hiei.

***

Hiei felt a mental pull. He was in pain, his head feeling like it was about to burst. His vision began fading in and out. 'I can't die! Not like this!' he thought angrily. It suddenly felt someone had punched him in the chest and in the head.

***

"I'm not going to stand around and watch, dammit! Spirit sword!" Kuwabara yelled, the spirit sword forming in his hand and throwing it at the computer. The professor's eyes widened.

"No! Don't do that! If you interrupt it then horrible consequences could occur! I'm telling you don't do it!" he yelled, jumping up.

Kurama watched in shock as two souls inside the beam sped to two of his friends. The spirit sword hit the beam. The beam flickered for a moment, then went out. But the souls were gone.

***

Hiei wearily looked up at the beam, groaning. The headache was still there, and worse than ever, but he felt relieved. 'It didn't work. . .' he thought. He felt relieved until he heard someone. . .someone in his head.

~Oro?~

Hiei suddenly felt a bunch emotions that weren't his in his head, mainly confusion. "What the hell. . .?" he muttered. Kuwabara and Kurama ran up to him and Yusuke.

Kurama glanced at Yusuke. "Yusuke seems to be unconscious. . ." he said. He turned to Hiei. "Hiei, are you all right?" he asked.

"I. . ." Hiei started. "I'm fine, but. . ."

'I just imagined it. There's nothing to worry about.' He thought, despite the emotions still swirling in his head.

"Hey, it looks like you're spacing out or something." Kuwabara stated. Even his voice had a note of concern.

"I'm fine." Hiei insisted. Kuwabara and Kurama didn't look convinced as Kuwabara cut the chains to both Hiei and Yusuke. Only, Hiei didn't land on his feet like he normally would. True, he did feel a bit odd, but he wasn't about to admit that. He sat up but stayed on the ground, not bothering to stand up yet.

"H-Hey!" the professor shouted, running over to them.

~Where is sessha. . .?~ someone wondered.

Hiei's eyes widened. 'I didn't just imagine it. . .' he thought. ~Who the hell are you?!~ he demanded.

~Oro? Sessha is Himura Kenshin. Where is sessha?~ the voice replied.

~You're in my head.~ Hiei replied bitterly.

Silence. Then, ~Sessha is supposed to be dead. . .~

~I know that.~

~How did this happen?~

'Damn that scientist. . .' Hiei thought, watching the professor run over.

"Who are you?" Amori questioned.

"Damn you." Hiei said angrily.

"I'm guessing you're still Hiei. Oh well. It didn't work." Amori sighed.

~Um. . .hello?~ Kenshin asked. Hiei continued to ignore him as he quickly stood up. Hiei grabbed the collar of Amori's shirt.

"Reverse it." He ordered.

Kurama, Kuwabara, Shadow (who was still standing by the computer), and Amori blinked. Finally Amori exclaimed, "You mean it did work? Battousai?" he asked.

Hiei heard Kenshin sigh. "There was a screw up, old man." Hiei replied. He lowered his voice. "I'm still here, but now I have this Kenshin guy stuck in my head."

"Hm. . .that does pose a problem, doesn't it? Two people can't share the same body. . ." Amori said, slightly cheerful and somewhat in thought.

"Exactly. Now reverse it." Hiei repeated.

Amori shrugged. "I can't. I didn't create any way of reversing it in this situation. I'm not even sure if it's possible."

Kuwabara blinked, then turned to Kurama. "Did he just say there's someone else in his body?" he asked.

Kurama nodded. "Yes. . .I'm pretty sure that's what he said. . ." He said, sounding slightly unsure.

"So does this mean that Hiei's a schizophrenic?"

Kurama shrugged.

"You do realize that I'm right here, right?" Hiei asked them irritably.

"We haven't forgotten." Kurama replied.

"So what's happened to Urameshi? The same thing?" Kuwabara asked.

"Probably so." Amori spoke up.

Speaking of Yusuke, he was just beginning to awaken.

***

~What the hell. . . What just happened?!~ A voice demanded.

"Shut up. . ." Yusuke muttered.

~Hey! Hey, kid!~ the voice yelled.

Yusuke opened his eyes slightly, his head pounding. "Man, do I need an aspirin. . ." he muttered.

~A what?~ the voice asked.

"Hey! What's this voice doing in my head?!" Yusuke demanded, jumping up.

"And it appears that Zanza is here, too. . ." said the old man nearby.

~I'm not Zanza anymore. I'm Sanosuke Sagara. . .~ the voice muttered.

"What the hell?! What did you do to me?!" Yusuke yelled.

"He tried shoving your soul out of your body to replace it with another." Hiei replied.

"Well, considering that Zanza and Battousai are actually here, will you two help my master? And I don't want a reply from Hiei and Yusuke, just the other two." Amori said.

~. . .I don't know what's going on. And considering this guy's calling me Zanza, I'm guessing he wants something from me. Tell him no.~ Sanosuke replied.

~Why don't YOU tell him?~ Yusuke demanded.

~Well, would you like me to use your voice?~

~. . .Good point.~ Yusuke said. "Sanosuke said no." 'Hm. . .Sagara. . .where have I heard that name before?' he wondered. He decided to shrug that off and yelled at the professor, "How do I get this voice out of my head?!"

"Yusuke, Hiei, if the process wasn't interrupted by your friends-" the professor started.

"Then we'd be dead." Hiei finished.

Yusuke growled, wanting to pound the professor's head in. Sanosuke seemed to sense this and agree with the kid. ~What the hell is he doing bringing me back to life in a body that's not mine, anyway?! The Spiritworld was just fine. . . ~ he said.

"Kenshin wants to know why you went to all this trouble to bring them back." Hiei said suddenly.

"Because," said a voice from the doorway, "I needed the Battousai and Zanza for their skills, but not Himura and Sagara. They'll only get in my way. Just like they did for my great-grandfather, Shishio."

***

Hiei felt a shock from Kenshin. ~Shishio?!~ he cried.

~You know him?~

~Hai. . .Makoto Shishio was what you could call sessha's successor, sessha supposes.~

~Successor?~

~From the Bakumatsu. He was an assassin, but afterwards he tried to take over Japan. That was in the Meiji Era.~

~I see. And you stopped him?~

~Hai. With help.~

The man who was at the doorway walked over to the others. He had brown hair and brown eyes, and looked around his late thirties. He stopped in front of Hiei. "Hello, Himura." He said. Hiei glared up at him.

The man then said to everyone, "I needed these two deceased fighters from the Bakumatsu to help me carry out Shishio's dream for a new Japan."

~Sessha refuses.~ Kenshin said immediately.

"So, this works." Said the man, glancing over at Amori. Amori gulped and nodded.

"Yes. . .but now. . ." he said.

"But now this invention of yours is broken. No matter. Now is time for the next step of my plan."

"Hey!" Yusuke yelled. "You guys had better fix this right now!"

"By the way, I didn't introduce myself, did I? I'm Kane." Said the man, ignoring Yusuke's yells.

"We don't care!" Yusuke said.

~We can't let him carry out his plans! If he wants a Japan like the one Shishio had planned, then innocent people will die!~ Kenshin cried.

~Shut up, he's just a human.~

~Well. . .aren't you a human too?~

~I'm a demon.~

There was silence. Then, ~Oh.~ There was more silence for a second. ~Where are we?~

~We're in a laboratory, idiot. Can't you see that?~

~All Sessha sees is darkness.~ Kenshin responded. Hiei could feel Kenshin concentrate, then say, ~Sessha can see!~

~. . .That's great and all, but I would really appreciate it if you could get out of my body.~ Hiei said sarcastically.

~Oro. . .Sessha doesn't know how, de gozaru. Sessha apologizes.~

Kane smirked at Hiei. "Is Himura freaking out over fact that I could take over Japan? He should. I may have different plans than my great- grandfather, but the outcome will be the same. Once I bring back the Juppongatana, it should be easy. After all, I have my elite group of humans and my elite group of demons. I even have the descendants of some of the former members ready to help. And you don't have your friends to help you anymore."

~He says he has demons on his side!~ Kenshin said.

~You think I didn't hear that?~

~And the Juppongatana. . .this isn't going to be easy, de gozaru yo.~ Kenshin groaned. ~Oh well. . .at least he won't be able to get help from all of them. . .Anji was on our side, so was Aoshi, Kamatari, and others.but sessha doesn't know about the others. . .~

~What are you babbling about? What is this Juppongatana?

~The Juppongatana was an elite group of swordsmen of Shishio's. Some of them. . .became good. . .but not many. Like sessha said, sessha is pretty sure that Kamatari, Cho, Usui. . .several others, too, will come back to him. If Shishio's plans are carried out, Japan will be thrown into chaos and innocent blood will be spilled.~ Kenshin paused. ~Could sessha speak to him directly?~

~What?~

~Sessha might be able to use your voice to speak to him.~

Hiei didn't like the sound of that. ~I won't let a human control me like a puppet.~

~Sessha does not want to. This will only take a few moments.~

Hiei sighed, annoyed. ~Fine. You have five minutes.~ he replied.

~Arigato.~ Kenshin replied. Hiei felt something in the back of his throat. His mouth moved slightly, then- "Thhh. . .Thiii-"

~. . .You're making me look like an idiot.~

~Gomen nasi. Sessha is trying to speak, but it's been awhile since Sessha has had a physical body.~ Kenshin said.

~Just how long ago did you die, anyway?~

~Sessha can't be sure. Sessha doesn't know the year, de gozaru.~

"Hiei, are you okay?" Kurama asked.

"Thiiis. . .This is Kenthen. Shhh. Kenshhhin. Hiei is al-low-ing ses- sha to u-se his vo-ice." Kenshin said. Hiei thought he sounded like a child learning how to read.

"Kenshin?" Yusuke asked, blinking.

"Yes." Kenshin replied, becoming more used to speaking now. "Yes. This is Him-u-ra Ken-shin. Ses-sha re-fuss to help. It will on-ly take the lives of in-no-cent people."

"So, the Battousai has decided to speak, eh?" Kane said in amusement.

"Please stop your plans. Sessha is asking you now."

~If you borrowed my voice to beg, I'm taking it back now. If you want him stopped, I could probably easily kill him.~ Hiei said, disgruntled.

~No. Sessha can't let you kill him. Sessha took a vow to never kill another person, de gozaru yo.~ Kenshin said.

~You did, but I didn't.~ Hiei shot back. ~I'll do what I want.~

Kane laughed. "I've been planning this for at least five years. You think that I would stop my plans just because the spirit of the Battousai told me to?"

"Please, Kan-e." Kenshin said again. "This is the Mei-ji Er-a. This is a time for peace, not un-neces-sary bloodshed."

"Actually, the Meiji Era ended a long time ago. . ." Kurama spoke up. Hiei felt his eyes widen.

'Damn it. He's learning how to control more than my voice. . .' He thought.

"What year is this?! What happened?!" Kenshin demanded.

"It's the year 2003. . ." Yusuke said slowly.

~Hey.~ Hiei said.

~Oro?~ Kenshin asked.

~I thought you were just going to borrow my voice.~

~Sessha is using more than your voice. . .? Gomen. . .~

~Just make sure it doesn't happen again.~

~Hai.~

Author's Note-Well, there's the second chapter. I'll try to get the next chapter out soon. In the meantime, please review! Ja ne!