Disclaimer: Nope. Not a chance -shakes head-

Warnings: incest, shounen ai, yaoi

Pairings: ItaSasu

Title: Uncontrolled Obsession

Rate: M

Summary: Itachi invites Sasuke to live with him. Sasuke accepts. During this time Sasuke desperately tries to hide his feelings from his brother but as each day passes, Sasuke finds its harder than he thought to hide them from not only Itachi, but Kisame, Sasori and Deidara as well. And what are the side effects of stress?

A/N: Okay so this is the first story that resembles my display name. lol. I'll be updating this story much faster than my other fanfics. Thanks for reading, enjoy and review. :D

Birthday

It was Sasuke's birthday and turning 16 gave him the authority to drink, leave the house whenever desired, drive and most importantly visit his nii-san who live 'who knows where.' Sasuke found himself pondering about Itachi and how his life was. His aniki had moved out every since he turned 18 and now it had been officially a year and a half since he last saw the gorgeous man. He smiled at that. The young Uchiha raised the bottle of sake in his hands and drowned it partially, before he leaned forward and settled it on the coffee table, just to lean back on the sofa.

Sasuke sighed as he let his onyx orbs close and listened to the loud music playing in the background and his friends yelling and grinding together. Naruto had thrown him a party at the club to celebrate the only 16 a person could have in their life.

'So troublesome,' now he sounded like Shikamaru. 'Great,' Sasuke thought sarcastically. A sudden presence behind him brought him back to reality as he casually turned around, opening his orbs all the while to come in contact with a familiar red head. Sasuke blinked once to see if it really was his best friend before Sasuke practically hopped over the sofa and pulled his friend into a tight hug. The ones he use to share with Itachi when he was younger.

Gaara let out a low chuckle as he wrapped his arms around Sasuke's waist, returning the embrace.

"Are you that glad to see me, Sasuke," Gaara teased, as he pulled back slightly for a view of the young Uchiha's face. Sasuke mumbled a 'yes' and settled his gaze on the white sash his best friend wore. Gaara gave a half smiled before leaning closer.

"I almost forgot."

"Happy Birthday, Sasuke," Gaara said as he gave Sasuke a kiss on the cheek. The 16- year old blushed slightly and thanked the sand nin, before the two teens released themselves from the hug. "So what are you doing in Kohona," Sasuke asked, while shoving his hands into the pockets. A normal gesture.

"Temari's on a mission a village away and I'd thought since it was your birthday, I'd come spend some time with you," the red- head replied as he ran a hand through his messy hair. Sasuke gave a nod, then went to pick up his sake, taking another chug from the bottle and offered Gaara some. The demon possessor reached out a hand and grabbed the bottle taking a few gulps before throwing the empty, porcelain bottle into the trash a couple feet away behind him.

Turning back, Gaara watched as a familiar blonde ran towards their direction, who he figured had to be Naruto.

"SASUKE-TEME! TEME!" the hyperactive ninja screamed as he latched his arms over Sasuke's neck and torso, joining at Sasuke's chest. Sasuke got a bit annoyed. He never liked the dobe touching him, although they were friends and he had just interrupted Gaara and his conversation.

"Get off me, dobe," was the warning Sasuke sent Naruto, before Naruto pulled away sheepishly, scratching the back of his neck- eyes darting in al directions never meeting Sasuke's stare.

The Uchiha sighed, "What do you want, Naruto?"

Naruto let out an awkward laugh as he kept his hands behind his head and replied "Oh.. uh.. nothing much… I.. uh… just wanted to say Happy Birthday and hope you enjoy it." Sasuke rolled his eyes, but thanked the blonde anyways.

'Naruto's just too predictable,' the Uchiha thought as he watched Naruto hop over to Kiba and Neji. Sasuke looked back at Gaara to see him staring at him which made the 16- year old return a questioning glance. Gaara just shook his head slightly with a smirk plastered on his face.

"What is it, Gaara," Sasuke asked.

Gaara walked up to Sasuke and ruffled his hair while saying "your cute." Sasuke glared at him playfully and mumbled, "don't call me cute." Gaara laughed slightly and walked way. Sasuke was wondering where he was going and Gaara, knowingly his best friend seemed to read his mind. "I'm getting a drink for us."

The young Uchiha watched Gaara walk through the crowd until he disappeared to where the drinks were located. He let out a small sigh, allowing a smile to grace his features. But that smile soon disappeared when he felt arms circling themselves around his torso in a backwards hug.

Sasuke let out a loud sigh. Why did people hug him all the time?

"Naruto, what are you doing?" the raven haired asked without actually acknowledging the person.

Said person leaned his head on Sasuke's shoulder and Sasuke, on the other hand, was getting very impatient when his question wasn't answered. A small shuffling could be heard behind the young Uchiha until finally he spoke, although it wasn't what Sasuke had expected.

"I'd just thought I'd give my Otouto a hug," arms tightened faintly around Sasuke and a chuckle was released. Sasuke's eyes seemed to widen slightly as the strong arms around him were removed allowing him to spin around. Sasuke stared at an older image of himself, toned body, long raven silk hair, and the face of a sex god. Wait. Was he checking out his own brother?!

Sasuke blinked to vanish his disrespectful staring as he saw Itachi standing there dressed in crimson leather pants, a black fishnet shirt covered with a leather vest and one of those visible smirks the young Uchiha had missed so much.

"NII-SAN!" Sasuke seemed to squeal as he gave Itachi his own kind of hugs, or to be more precise Sasuke glomped his an Itachi, the force able to send the siblings toppling over, if it weren't for the 19- year old's sturdiness.

Itachi allowed a secluded smile to form before he felt Sasuke reluctantly release him. A moment of silence followed as the Uchihas memorized their physical appearances before Sasuke broke the silence, despite the loud 'bangs' in the background.

"y-you remembered," the younger Uchiha spoke in shock, receiving a nod from Itachi.

"Now, how could I forget my precious Otouto's birthday?" Itachi asked while ruffling Sasuke's raven spikes, repeating Gaara's gestures, unknowingly. The young of the two blushed as he leaned into the brotherly affection, disappointed when the larder hand left moments later. That's when Sasuke noticed his Nii-san's friends standing behind Itachi. He had knew them since the age of 13. His brother would usually hang out with them more than Sasuke, which got him jealous, but he focused himself on other things than just Itachi.

Sasuke surveyed his brother's friends, taking in their appearances. There stood the blonde, red- head, and of course that weird fish or was it a shark? He mentally shrugged as he continued to stare at each being.

Sasori, he remembered as the red- head, wore loose blue jeans strapped with a black belt buckle, and a loose black T-shirt. Deidara, the blonde, was dressed in black trousers and a black and crimson stripped shirt. Kisame, on the other hand just kept it simple with dark jeans and a white shirt.

The only thing that disturbed Sasuke was the smirk flashed at him from Deidara, before he moved forward. He stared as the blonde approached him.

Deidara hovered in front of Sasuke as two hands raised to pinch his cheeks.

"Hey, Itachi, your brother's grown up, un!" Deidara yelled over his shoulder then peered at Sasuke's face. "You look so cute, Sasuke-kun yeah." the blonde complimented, ignoring the glare Sasuke shot him. Sasuke smacked his hands away, but the hands only advanced around his waist.

This time the young raven head shot the blonde the 'Uchiha glare' and was about to speak up for himself, but Itachi did the speaking for him.

"Deidara, stop flirting with my Otouto. I'm getting jealous," Itachi half joked before Deidara obeyed and moved back to stand next to Sasori.

Sasuke straightened up and made sure he'd control his blush, before he gave a greeting to each of Itachi's friends.

"It's nice to see you again Sasori. Kisame. Deidara."

Sasori gave a lazy smile and nodded. Kisame was the one who spoke up with a "nice to see you again kid!" Deidara's was quite expected and unexpected at the same time.

"Awe, we don't get a hug, un?" the blonde pouted but gave an evil smile a second later. "Don't worry, yeah.. I'll get one form you before the party's over yeah.."

"Hn"

Sasuke turned to face his nii-san, catching Itachi's stare and smiling softly. He was just glad Itachi was here.

"Sasuke!" someone called out from behind as the teen spun around to see Gaara with the sake. He was starting to get thirsty and Gaara came just at about the right time.

"Hey, Gaara," was the reply before Sasuke took the bottle Gaara was drinking from, held it up to his lips and rank the fluids. When he had satisfied his thirst , he let his excitement take over. "Look who came, Gaara!' he said before both teens averted his eyes towards the four older teenagers.

Gaara's eyes met Itachi's before they greeted each other.

"Itachi."

"Gaara."

They both nodded to each other.

Sasuke watched his brother and best friend eye each other as he subconsciously drowned the entire bottle of sake that he occupied. Gaara was the first to break the eye contact as he glanced at Sasuke who leaned against him, for better balance was it?

Sasuke's head met Gaara's shoulder as Itachi notice saliva dripping form his Otouto's mouth . "Sasuke." Gaara called only hearing a giggle from the young Uchiha. Gaara placed a hand on his friend's shoulder, shaking lightly in an attempt to wake him up, failing miserably.

"What's wrong, Sasuke?" Gaara asked, concern lacing his voice. Before he would steady the Uchiha, he noticed the familiar blue bottle in Sasuke's hand.

"He's drunk," Itachi finally spoke up.

Itachi raised his hand in Sasuke's direction and beckoned him to come.

"Otouto, come here."

Sasuke immediately snapped his head up when he heard his Aniki call him, and wobbled over to Itachi. Halfway, the young Uchiha tripped and toppled forward giving out a small scream. But before he collided with the ground, a pair of strong arms were wrapped around his waist, pulling him forward into a strong chest. The half-drunk teen looked up slightly to meet Itachi's gaze.

"ANIKI!!" Sasuke squealed, clutching to Itachi's shirt and digging his face into the crook of the elder's bare neck. Itachi was prepared for this, of course. He remembered giving his otouto a shot of sake when he was 13 and Sasuke tended to do weird things in that state, he noticed.

"I love you, Aniki!" Sasuke said as he nuzzled Itachi's neck.

"Alright, Otouto. It's time for you to go home," Itachi stated.

"But Aniki, I want to stay with you," Sasuke whined. He suddenly felt like a 7 year old again. Itachi chuckled a bit, looking at his otouto. "Aniki! Don't laugh…its not funny!" Sasuke crossed his arms across his chest and his lower lip puckered out.

"Alright, Otouto. Come with me," Itachi said, as he turned around, Sasuke stumbling after him, followed by Sasori, Deidara, and Kisame who witnessed the whole thing.

"Bye Gaara! I love you too!" Sasuke yelled. Gaara let a smile split on his face and waved at the retreating back.

Exiting the club and arriving at his car, Itachi carried the now asleep Sasuke and strapped him into the back seat, as Deidara hopped in next to him, and Kisame next to Deidara. Itachi took his place in the driver's seat and started the and drove off when Sasori hopped into the passenger seat next to him.

10 minutes later

Itachi stopped at the red headlight as he examined his Otouto from the mirror. He made sure he okay before Itachi flipped out his phone and dialed his Kaa-san's number, then holding the phone up to his ear. After the second ring a familiar voice was heard from the other line.

"Hello, Itachi is that you?"

"Yes, Kaa-san. I would like to ask you a favor."

"Sure. What is it, honey?"

Itachi mentally rolled his eyes. His mother was always so sweet and caring.

"Do you remember the talk I had with you and Tou-san before I left regarding Sasuke?"

"Of course. I'm sure Sasuke would be thrilled to come live with you." Mikoto said.

"Thank you, Kaa-san. Could you please pack Sasuke's belongings? I'll be over tomorrow morning to pick up his things and Sasuke will be staying with me tonight."

" Alright Itachi. I'll see you soon then."

Click.

Itachi moved the gear and headed straight before making a left, driving into the driveway of his house. The engine was turned off and Itachi exited, slamming the door shut. He opened the back door and lifted Sasuke out of the seat, carrying him bridle style into the house as his friends followed.

Since there wasn't a guest room at Itachi's house, the elder Uchiha decided to use his bed for Sasuke's benefits. He laid his otouto on the crimson sheets, before giving him a kiss on the forehead and headed out the room.

In the living room

"Hey, Itachi. How are you going to handle the kid living with you?" Kisame asked, sipping on his cooler casually staring at the Sharingan user.

"Its none of your business, Kisame." came the cold reply.

"Geez, Itachi un.. Don't be too possessive yeah." Deidara said from across the room. Itachi shot him glare and muttered something about having a 'headache' and something about 'Sasuke.'

Sasori stayed quiet staring at Itachi handling the stress of having his brother with him, but something was out of place. He knew what it was, smirking mentally at how visible the Uchiha's tension was. But he didn't bother to say anything.. He'd pop out of no where one day.. Deidara and Kisame were just a bit dumb to figure it out.

An hour later

Itachi slipped into bed next to Sasuke, after his friends left. He sighed deeply and felt his otouto cuddle next to him. Drifting an arm around Sasuke's waist, he too fell asleep.. Itachi had to wait.. Till tomorrow.. Till Sasuke woke up to ask him..

Morning

"Itachi," was the first thing the younger Uchiha said before lifting his cool hand on his forehead as it spun. He heard the door open and cracked his eyelids open to be beamed upon by sunlight.

"Otouto," Sasuke snapped his head up cursing when he felt his neck crack and saw Itachi next to him, holding out pills in his hand.

'Ngh' "Aniki," Sasuke groaned as he took the pills and water from Itachi drowning it and placing the cup on the night stand.

"What happened? Where am I, Nii-san?" the younger teen asked.

"Your at my house, Otouto."

Sasuke climbed out the bed and groggily walked over to Itachi, draping an arm around Itachi's neck, giving him a good morning 'kiss' on the cheek, which had shocked the elder of the two a bit. Itachi and Sasuke had stopped those kisses when Sasuke had turned 10.

"Otouto, I have a question to ask you," Itachi said, when he was pulled away from shock.

Sasuke looked up, with curious eyes to the statement his aniki mentioned.

Itachi took this as a sign for him to continue speaking.

"You've turned 16, Sasuke. And I had an agreement with Tou-san and Kaa-san before I moved out of our home. The question is would you like to move in with your aniki?"

The half-lidded eyes opened fully to Itachi's question and Sasuke nodded his head furiously. Itachi smiled a true smile at his otouto's acceptance and kissed his forehead.

"We'll be picking up your things from Kaa-san after breakfast." Itachi stated as he watched Sasuke run out his room and down the stairs laughing.

'Cute' the elder Sharingan user thought.

A/N: First chapter finished. So what do ya think? Review! Chapter 2 will be updated a few days from now.