Alright people this one's going to be a thriller (I hope -_-) I've been down hill with my story skills lately I haven't been doing well. So anyways this one is about what if Orochimaru had sealed something more than the curse seal inside Sasuke. What if he sealed some sort of demon within Sasuke's body? What would happen?

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Kabuto walked into Orochimaru's chambers and kneeled when he saw him. He held up something in his hand it was a jar like container containing a bunch of glowing black and red chakra.

"Lord Orochimaru…I found the object you were looking for." Kabuto said softly.

"Ah good…now who should be its host…?" Orochimaru said scratching his chin.

Then an idea came to him.

"Kabuto…why don't you go get Sasuke-kun…tell him to come to my chambers immediately." Orochimaru said with a smirk on his face.

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Meanwhile…

Sasuke was just about to crawl into bed from a hard day's work of training when there was a knock on the door.

"Ugh! What is it now? I'm tired!" Sasuke growled. He heard Kabuto snickering from behind the door before he opened it.

"Lord Orochimaru wants you to come down to his chambers immediately." He said with a smirk.

"Tell him it can wait." Sasuke growled pulling the covers up over his head.

"Alright but I don't think Lord Orochimaru will be very pleased." Kabuto said pushing up his glasses before walking out of the room.

Five minutes later…

Sasuke had just gotten to sleep when suddenly the door opened.

Sasuke grabbed his sword from his bedside and got ready to attack if need be but saw it was Orochimaru. He lowered his sword and set it back down.

"Sasuke-kun…I'm a little disappointed…when I give you an order I expect you to follow it." Orochimaru said.

"You run me back and fourth all day I believe I deserve a rest every once in a while…" Sasuke growled.

Orochimaru chuckled. "I love your stubbornness it makes things so interesting…" Orochimaru said distracting Sasuke as a shadow clone snuck up behind the boy.

"Just tell me what you want so I can go back to bed." Sasuke said it was clear he was quite frustrated.

"Don't worry you can go take a nap soon then you can go back to training." Orochimaru chuckled then the shadow clone behind Sasuke hit him in the back of the head and knocked the teen out.

"Mhmhmhmhmhm…perfect." Orochimaru laughed.

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Three hours later…

Sasuke woke up with a weird feeling.

He noticed he was in Orochimaru's experimenting room this concerned him. What concerned him even more was that he was restrained down on the cold examining table with a gag in his mouth and his shirt off.

Orochimaru walked into the room and smirked.

"Ah Sasuke-kun…you're awake." He said as he reached down and started petting his hair.

"Don't worry Sasuke-kun the procedure will be painless from what I've seen it's pretty quick." Orochimaru said as he pulled out a kunai and walked over to a shelf with a bunch of his experiments mostly some odd looking man made chemicals.

Orochimaru grabbed two bottles and popped the cap.

Sasuke watched as he approached him then held the bottle over Sasuke's chest and poured the liquids on Sasuke's chest and rubbed them into his skin.

Sasuke muffled a curse the liquids were freezing.

Orochimaru then formed multiple hand seals and finely he pressed a hand on Sasuke's chest and a bright red light filled the room and Sasuke screamed in pain then he blacked out.

Seven minutes later…

Kabuto walked into the room and looked at Orochimaru who was untying Sasuke from the table.

"Kabuto can you check his DNA readings and tell me how the process is going?" Kabuto walked over to Sasuke and put a small machine to Sasuke's chest as a mark appeared on it.

"Yes his chakra seems to fit the creature well the demon is responding well in its new environment. You should be able to summon it now when ever you wish." Kabuto said as he watched Orochimaru stroke Sasuke's hair as he looked the boy's body over.

Orochimaru then noticed the large black symbol on Sasuke's chest. "Kabuto what's this? Is this part of the jutsu you told me of?" He asked.

"Oh that? That is the demon seal that will keep the demon inside Sasuke's body. But I warn you there are some side effects to it." Kabuto said looking down at Sasuke's face.

"Such as?" Orochimaru asked.

"Constant dizziness, blurry vision, temporary immobilization at times, short out bursts of power, and short temper even though sometimes it seems he already has one." Kabuto said pushing up his glasses.

"Hmm…I see…" Orochimaru said softly.

Sasuke started to stir and he saw Orochimaru standing above him looking down at him.

Sasuke found he wasn't strapped down anymore and he jumped to his feet only something was wrong he didn't feel right he collapsed to his knees then a burning pain filled his chest.

"What the hell did you do to me!?!" Sasuke yelled as he looked at the seal on his chest, it was quite clear the boy was panicked.

Orochimaru just chuckled in reply and Sasuke felt himself slipping into darkness.

"Kabuto…I want to test out our little Sasuke-kun's new abilities…go send a message to the Leaf Village...tell them that I'd like to meet them in the Leaf forest

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Meanwhile back in Konoha…

Tsunade was sitting at her desk when an ANBU soldier came into the room with a letter in his hand.

"Tsunade Sama this is an urgent message from the Sound village." The ninja said quickly.

Tsunade eyed the message in the man's hand as she took it from him. She opened it up and read it her eyes widened then narrowed in suspicion.

"Sir. Will you please gather Kakashi Hatake and his team, Shikamaru Nara, Hinata Hyuga, Neji Hyuga and Anko Mitarashi? Tell them to go to the Leaf Forest immediately. Tell them Orochimaru is here and he is in the Leaf Forest waiting." Tsunade said firmly.

"Yes Hokage Sama." The ANBU ninja replied and quickly left the room.

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Well there's the first chapter guys I hope you liked it yes I did redo the chapter so yeah.