New idea that came into my head and I want to express. Is that so bad? An attempt at a Naruto story with one sharingan eye. Let us see how far I can go with this.

Disclamier: I do not own Naruto or the slight cross over with Mortal Kombat.

Human speak: "Sup?"

Bijuu / jutsu: " In the end, we are all satisfied.", "Fire style: Fire ball jutsu!"

Bijuu: ' Bite me.'

Human think: 'I wonder.'

A smell lingered the Uchiha district; the smell of blood. Across the streets of the Uchiha's plot of land lays vast amounts of bodies across the streets. All of them are Uchiha. Possessors of the bloodline limit called the Sharingan. The Sharingan was also known as a doujutsu that has 3 levels, not including the forbidden level known as the Mangekyou Sharingan. Each level has one tomoe for each. Thus the amount of tomoes in each level grow till it reaches its limit: 3.

Enough on the short lesson though.

A boy the age of 6 ran through the district. He had blond hair and blue eyes and 3 whisker marks on each of his cheeks. Even though he didn't know it, he wasn't supposed to be there. And because of that fact, he gains something, something that can only be gained through equivalent exchange in his case.

An eye for an eye they say.

A man appeared in front of Naruto and slashed at his left eye, completely making it useless. Naruto was bleeding profusely from his eye as he fell on his back. Naruto stared in fright at the man before him.

"You weren't supposed to be here. Now suffer the consequences." The man who has black hair,wore a black robe, and glowing red eyes with three black tomoes in it. Right before Naruto passed out, he saw a boy at his age with long black hair tied into a pony tail and similar glowing red eyes only with a single tomoe in it.

1 hour later

The boy with one tomoe crawled to Naruto's body. He sat himself up and stared at Naruto. The boy had deep lacerations and his right eye was cut. He then coughed up blood.

"I can already tell I don't have much time. I remember you from class… Sasuke-san's friend, right?" He asked sullenly. He knew Naruto wasn't gonna answer.

"This is my gift from me to you. I know I'm not gonna- COUGH COUGH!" The boy entered a coughing fit as he coughed up more blood. A shadow appeared behind him. It was the man that slashed Naruto's eye.

"You ready?" a new and different man appeared. He sighed sadly. If things had went as planned and Naruto didn't show up, he wouldn't have to do this.

"Itachi-san… even though you… caused this, I thank you for doing this favor." The boy said. The boy lies next to Naruto and stared up straight.

"I'm sorry. Just to let you know, I didn't kill Shisui." Itachi said his condolences. The boy smiled.

"I know. Out of all the times you and aniki spared… you… never…won…" The boy barely crooked out the last word.

"Good night… Kamui Uchiha." Itachi muttered as he began to transplant the boy Kamui's left eye into Naruto's left eye socket.

"An eye… For an eye. I hope you can utilize the Sharingan like Kakashi did. Damn it Madara, we agreed only Uchiha." Itachi muttered as he finished the eye transplant and healed the scar.

"Hey! Who's there?" A voice rang from behind Itachi. Itachi looked behind himself and muttered 1 word. 1 word that destroyed half of the Uchiha district.

"Amaterasu."

Hospital: 7 AM

In the room 104, two boys lay in separate beds. One boy was Sasuke Uchiha, young prodigy and younger brother of Itachi Uchiha, another prodigy and recent clan massacre. No Uchiha other than Sasuke was left alive. Sasuke still sleeps though.

The other boy is Naruto, and he is definitely awake. Naruto kept staring at the ceiling, noticing that his vision was separate and it was draining him. Whenever he closed his left eye, the drain disappears. He then looked at Sasuke, with his left eye still closed.

"Dang, someone did a number on you." Naruto said as he got up and went to sit beside Sasuke's bed. Naruto opened his left eye and saw something strange. He saw a blue aura around sasuke. It was faint, but he could make it out. He then noticed a black irregular aura near Sasuke's head. He immediately went to touch it.

As soon as he saw it, he saw everything. Everything that happened the night before. All the Uchiha were killed… no, slaughtered.

"What kind of guy could do this?" Naruto asked out loud. 'wait a minute, is this aura chakra?' Naruto thought. He read text books on chakra and paid attention to a few lectures. He didn't get a firm grip on the concept since the teachers tried to stunt his growth, but he did unlock it.

"If that's chakra, then what's this black stuff?" Naruto questioned as he got into a thinking pose. Naruto shook his head and sighed. He went to go into the bathroom and washed his face. He looked into the mirror and saw something that caused him to scream.

In his left eye was a red eye with one tomoe mark near the pupil. Naruto screamed so loud that a man bursted through the door. The man was old, very old. He wore traditional white robes with some red that matched to the hat with the kanji for "Fire Shadow" on it.

"Naruto! Is everything alright?" The old man asked as he was holding a kunai knife. Naruto stared at the old man. Through his left eye, he saw a blue aura that was much bigger than Sasuke's.

"Hokage-jiji! What happened to me? What's with my eye? Am I sick or something? What is gonna happen to me? I'm gonna die! I'm gonna die! I'm gonna die!" Naruto said fast as he was running around the room crying anime tears. The old man had a sweat drop fall as he sighed and put his kunai away.

"You're not gonna die Naruto. Something happened last night and I need to sit down and answer some questions for me." The old man told Naruto. Naruto quietly complied as he sat in the chair next to Sasuke's bed.

"What happened last night Naruto? What can you remember?" Naruto pondered on the question. He then snapped his fingers.

"I was gonna return Sasuke's toy ball he let me borrow when I saw a bunch of people lying on the ground. There was… so much blood." Naruto crooked out the last part as he started remembering. They were all dead. People he didn't know, dead. And then the man who attacked him.

"Then there was that guy in a black coat thingy! He said that I needed to pay the consciences for something. He then cut my eye… wait my eye! Why is it strange?" Naruto practically screamed the answer. The old man put his finger to his lips and shushed Naruto. Naruto calmed down.

"Naruto, you lost your left eye. I don't know how, but you were given a new eye. A sharingan eye to be exact." The old man explained.

"What's the Sharingan?" Naruto asked innocently as he tilted his head to the side a bit.

"Remember the lectures on kekkei genkai?" Naruto nodded "well the Sharingan is a kekkei genkai that involves the eyes. It belongs to the Uchiha clan, Sasuke's clan to be exact." The old man said as he pointed to Sasuke, who remained asleep.

"What does it do?" Naruto asked.

"You've already seen chakra, right?" The old man asked. Naruto nodded, now knowing that the aura is definitely chakra.

"That is the first stage. There are two more stages. You will know when you reach the next stage when you get another black mark in your eye." The old man explained it in the way that Naruto could understand.

"What does the other stages do?" Naruto asked.

"You are gonna have to read and find out." The old man said as he pulled out a book labeled "Kekkei Genkai of Konoha."

"EH? READING? I hate reading!" Naruto pouted and turned away with a grunt.

"If you want to learn about the Sharingan, then you are gonna have to read for it." The old man sat the book on Naruto's lap.

"I have to go. You will be released from the hospital soon. Get some rest for now." The old man told Naruto as he left the room. Naruto went into the bed and began to sleep, not noticing Sasuke thrash in his bed.

Naruto was later shook awake by a nurse. She told Naruto that he was able to leave the hospital. Before he left, he wrote a card for Sasuke and set it next to the desk next to Sasuke. Naruto made sure to get the book that the old man left for him and left for his apartment.

As soon as Naruto entered the room, he began to read the book.

Timeskip: next day.

"I can see more clearly with this eye. It's like I've truly woke up." Naruto said as he was walking through a training ground he randomly picked out. He saw the chakra of some animals that passed by. He even saw things that he can't see with the other eye, like how clear the patterns of the tree bark is.

Naruto continued to walk around until he bumped into something…well someone.

"What are you doing here? This is a reserved training ground." The man said. He had slicked back black hair with a few bangs and red eyes that looked very intimidating. He wore no shirt at the moment, with only black baggy combat pants and black fingerless gloves. He had a strange tattoo on his shoulder that resembled a black phoenix.

"I-I'm sorry sir! I didn't know! I will be on my way now!" Naruto backed up slowly. The man grabbed Naruto's shirt and yanked him up to eye level.

' hmmm a Sharingan? And those whisker marks…' "so you're Naruto?" the man asked.

"How did yo-" "silence!" Naruto tried to say something, but was cut off. The man then lifted up his shirt and stared at, what he could recognize, a seal. He then threw Naruto to the ground, and gave him a murderous look. Naruto saw this and shivered.

"A-a-are you gonna kill m-me? I don't wanna die!" Naruto tried to crawl away, but his foot was grabbed and he is now currently hanging upside down.

"Congrats kid. Something about you caught my eye. Now you are my apprentice. Oh and this offer can't be refused… or else!" The man said with a evil like grin while he cracked knuckles in the hand that wasn't holding Naruto. He then threw Naruto back down and crossed his arms.

"So gaki, what do you know about Mix Taijutsu Specialist(1)?" The man asked as he had a strange glint in his eyes. Naruto knows he's in for some intense training. And he wasn't even supposed to be here today! (A/N: to all you clerks fans.)

"Hey, sensei. Do you normally pick random people to become your students?" Naruto asked. Naruto was awarded with a kick to the stomach.

"Do not speak unless I say so or you can defeat me in a taijutsu fight! Now get up, we are gonna begin your lessons in MTS." The man said as he picked Naruto up to his feet.

"Now I want you to mimic this stance." The man brought his hands to his head and raised his leg so it was bent at the knee while his toes remained on the ground. Naruto did, surprisingly well.

'probably because of his Sharingan.' The man thought.

"If we are gonna continue training, we need to cover this up." The man said as he pulled out a red cloth from his pocket and wrapped it around Naruto's left eye.

"Hey! What gives?" Naruto asked the man. The man only kneed Naruto in the stomach.

"Didn't I tell you not to speak out of term? Now get up and do the stance again. Then we can move on to katas of this fighting style." The man said as he got back into the stance.

"Again." The man said. Naruto got into the stance.

A few minutes later

"No no no! You kick for the mid part! Lift your leg up more when you kick!" The man said as he hand Naruto kick a log with no padding. Naruto's leg is a little bruised as he kicked the log again. This time he got midpoint… with his leg stinging in the process.

"Ok now, the other leg." The man said. Naruto switched legs he was standing on and seethed in pain for a bit. Then began kicking low, then medium.

"Very good. You are getting the hang of it." The man said as he watched Naruto kick the log.

"Now I want you to go home and get some rest. Today was just a taste. The full course meals comes next and you are going to be eating for quite awhile." The man grinned. He then thought to himself for a moment.

"Hey, I never gave you my name did I?" The man asked. Naruto nodded, while limping a bit.

"Just call me Raiden-sensei." The man said as he shooed off Naruto.

Time skip: the next day.

"So the Sharingan not only sees through ninja techniques, they can copy them too! It's the greatest

tool against people! That's so cool!" Naruto said as he read.

"But wait, why did Raiden-sensei cover it up yesterday? He must not want me to be copying his moves… maybe that's cheating. I don't want to cheat my way out of fights!" Naruto pouted as he stared up to the ceiling.

"But that would be a waist to my new eye… Oh I know! I will make a promise! From now on, I will only use the Sharingan if I need to! That's a promise of a life time!" Naruto pumped his fist up into air as he tried to stand up. He only fell back down in pain.

"Ow. My legs hurt too much!" Naruto cried anime tears. Little did Naruto know, he was being watched by his new recent sensei through his open window.

"I can only hope I have enough time to teach you enough my apprentice." Raiden said out loud. He then saw Naruto fall down in pain.

"Well we gotta work on pain tolerance first." Raiden chuckled as he shunshined away towards the training ground, waiting for Naruto to arrive.

TBC

Please review.

(1): MTS or Mix Taijutsu Specialist is basically like MMA in our world except there is only gonna be a few styles from our world and a few styles in the Naruto Universe.

If anyone couldn't recognize the stance I described, it's Muay Thai. I'm gonna add in Taekwondo, Capoeira, Wing Chun, and Akido. From the styles in NU, well that's a secret.

Review please! Cya!