Greetings curious readers! This is my first foray into the Naruto Universe so I hope I don't disappoint. This one shot is a challenge fic for and from my koishii, Volpone, and will focus on a Kyuubi Naruto/Sakura pairing. Do check out her work because it's awesome!

Disclaimer: I own no part or parcel of Naruto, Viz Media or Shonen Jump. Merely borrowing the characters for a bit of fun.

Note: This story takes place within the second season of Shippuuden after Naruto's four tailed fox transformation and the failure to retrieve Sasuke from Orochimaru's lair. Will contain spoilers for those who haven't progressed that far into the Naruto time line. Some non-consensual and reluctance on the part of Sakura is present. There are sexual situations present which are edited for this site. If you want an unedited version, I'm working on that and will post it soon after I do this on my media miner account which can be found on my author profile page.

Tainted Love

"You are the one who hurt Sakura, Naruto."

Again and again, those words ran in the jinchuriki's head as they slowly progressed through the grass country, heading east towards the land of fire and Konoha. The meeting with the Sound Ninja spy had ended with battle against Orochimaru. A taunting by that snake brought out Kyuubi to an extent never seen before. Naruto had no memory of the transforming into the demon's four tailed form. Of the destruction he rendered. The animalistic way he struck out at friend and foe alike. The sheer power at that level was too much for him. If not for Yamato subduing his chakra, instead of merely hurting Sakura, he might have killed her. And in doing so, truly lost his mind to despair and guilt. For Naruto was in love with Sakura and would be until the day he died.

It was his love for her that he had vowed to bring Sasuke back to Hidden Leaf. So that the pink haired kunoichi would be happy. He loved her smile. Love to see her happy. If it meant that his own happiness was to be denied in being with Sakura, then so be it. Nearly three years away from her had not diminished the emotions held inside his heart. Nor his conviction to retrieve Sasuke back at any and all costs. He swore it to Sakura and to himself. Sasuke was the brother he never had. Even if he hated him in the beginning, hated him for cutting ties and leaving, he would not abandon their friendship.

Friendship. Look what your friendship has cost you. Look what love has cost you.

A scowl marred the blond ninja's features as the voice of Kyuubi interrupted his thoughts. Naruto's blue eyes shifted over to the lithe form of Sakura as she walked ahead of him, his gaze lingering on her legs where his tail had cut and burned the supple flesh and tissue.

Even now she is afraid of you. Afraid of your power. The surprise on her face when you hurt her was rather amusing.

A soft snarl erupted from the blond ninja's lips, voice too low for the others to hear. "Shut the hell up. Don't you dare talk about Sakura like you know her. You know nothing about how it feels to have friends and to love someone."

Dark laughter echoed in his head. Foolish kit. Love is weakness. A tool to use others. To abuse and take advantage of. Friendship is the same. Lust for power. Lust for blood. Lust of the flesh. Those are the greater desires. The greater emotions. That is the true nature of the world. That is all that exists. Nothing else is important.

Those words created a wave of darkness within the blond ninja's heart. And in that moment, the ninja hated his bijuu. "You know nothing." Naruto spat softly then focused his energy to quiet the beast as he marched along with his team through the bamboo thicket, stopping only when Yamato decided upon a spot to camp for the night.

Naruto sat by the fire, poking at the logs with a long stick, the orange flames crackling and undulating upward into the starry sky. Smoke curled around his subdued features, eyelids closing slowly as he tilted his head back, lost to his own thoughts of Sakura and the confrontation with Sasuke until he felt a presence beside him. Turning his head, Naruto opened his eyes to find the pink haired kunoichi staring down at him with a soft smile.

"Can I join you?"

The blond gave her a grin and nodded, happy at the chance to be close to her. "Yeah, sure thing, Sakura!" Scooting to his left across the log, he watched as the girl sat down beside him. "So.. um.. about what happened.." He started only to stop when Sakura interrupted.

"It's alright, Naruto. I was.. I was worried about you.. It's my own fault for rushing in to help you when I really shouldn't have."

Naruto's brow furrowed, his gaze shifting downward as he spoke softly. "Still... I should of had control but I lost it. I just got so angry, I.." He paused, lifting his head to study the girl. "Wait.. Did you just say you were worried about me?"

Sakura nodded, flashing a soft smile in his direction. "Yes, Naruto. I was worried about you. How could I not be you big dummy. You're my friend. My teammate. Teammates look out for each other right?"

"Yeah! That's right! They do!" Naruto replied, nodding his head like a little kid.

The pink haired girl giggled, reaching out to touch Uzumaki's hand. "You're such a goof, Naruto. It's why I love you like I do."

A flush of crimson spread along Naruto's whiskered face at the touch and of her words. "You.. You love me?" He stammered in shock. His heart hammering in chest, the blue eyed shinobi felt vindication flooding his entire being. Finally.. After all those years.. All the sacrifices he'd made for the girl's sake. Hoping and praying and believing he could win her heart by being selfless. Finally he was going to be rewarded. Yes! Yes, yes, yes! His mind screamed only to feel his heart drop into his lap at her next words.

"But.. I.. I can't abandon Sasuke. You understand, don't you, Naruto? He needs me.. Even now.. To stay strong and be there for him when he returns."

No, no, no! He yelled inwardly, his features and voice full of hurt and confusion. "But.. But you.. Love me.. You said that.. What does that mean if even now.. After all I've done.. You still won't let me love you? You.. You saw him at Orochimaru's hideout. Saw that he isn't the same. He cares nothing for you, Sakura! He's obsessed over killing his brother. He tried to kill me, for Christ's sake! Doesn't that mean anything at all to you?!"

Sakura blinked in surprise at the anger she could hear in her friend's voice. "Naruto.. Calm down. I know what happened. I was there. It was wrong of him. But.. Seeing him again after all these years.. It just.. Made me want him all the more."

Naruto grit his teeth and stood up, clenching his fists and stuffing them in his pants pockets. Sakura reached out, trying to get him to sit down again, not wanting Sai or Yamato to witness her friend's outburst, but the jinchuriki shrugged it off, hurt and anger reflected in the cerulean blue of his eyes as he stared down at her.

"Naruto, please. Try to understand. I do not love you less, I just can't give up on Sasuke yet." Sakura frowned as Uzumaki turned from her and began stalking off. "Naruto.. Where are you going?"

The blond shinobi stopped and growled out softly. "For a walk." Then continued onward through the bamboo thicket. Some distance from the camp, Naruto found a small river and climbed upon one of the boulders lining it's shore. Wrapping his arms around his legs, he stared down into the swirling pool, his heart still hurting over Sakura's words.

He blinked as his blue eyes shifted and became the red ones of kyuubi, his features more feral and the voice that was and was not his growling inside his weakened mind.

Look at you, kit. Pathetically lamenting over that tricky vixen's pretty words of dismissal of your feelings. You let a traitor come between you and what you want. You look at her with love and lust in your eyes yet never lift a finger to claw and grab what is yours. How long are you going to deny yourself the pleasure of taking her?

Naruto closed his eyes and covered his ears, not wanting to listen. " Just shut up! I don't need you adding to my problems, okay?! I can't just walk up and make Sakura love me the way she loves Sasuke! It'll never change! She'll never be mine! And.. And I can't betray Sasuke like that! I still.. I made a promise to bring him back to her. As much as.. It fucking hurts me, I can't forget that! So.. Just stop talking to me!"

It was too much for Naruto. Too many things had happened in the past few days. He was still weakened from the physical demands using Kyuubi had put on his body, heart and mind. And it was the swirling of all these negative emotions that sent the shinobi reeling off the boulder then crashing into the rocky shoreline below. Teeth clenched, his body doubled over, Naruto fought against the searing pain in his abdomen. A blood mist began to form around him and the ninja could only pant out in horror as he realized what was happening to his body. "No.. No.. Stop.. Can't.. Turn.. Into..You.. No.. Control.."

His words became more guttural, his body changing as kyuubi took over. One, two, three, then four tails erupted within the blood mist chakra surrounding the shinobi. Skin peeled off, dark reddish fur replacing it as he became the manifestation of the demon. Glowing eyes stared down into the water, fangs set in a grin as the fox reached the balance between control and madness. His words were rough and feral as he growled out into the night air. "If you will not do what needs to be done, kit, then I will do it for you."

Kyuubi's ears twitched at the cries of the ninja nearby and he focused his chakra, sending it into the ground like tendrils then up, wrapping around the forms of Sai and Yamato, burning and poisoning them, delaying any help they could provide to his prey.

XXXXXXXXXXX

Sakura's harsh breathing could be heard within the sudden stillness of the evening. Goose bumps lined the soft skin along her arms at the evil chakra she could sense coming from the direction Naruto had headed off in. She was about to go investigate when the cries of her comrades startled her and she whirled around from the darkness to find Sai and Yamato on the ground, unmoving. She rushed over to them, checking the injuries to their bodies. Recognizing the wounds as those inflicted by the four tailed demon, she tried to heal them only to snap her head up at the sound of trees breaking.

The kunoichi's emerald eyes were filled with panic as the darkness began to glow an eerie shade of red. Kyuubi was coming. Coming for her. Her training told her to stay and fight, to protect the two fallen ninja but her mind reasoned they were not the ones the demon was after. It was her. And if she ran to a safer spot, they wouldn't be harmed.

With lightning speed, Sakura darted off, frantically searching the wood for a better place to fight the demon that was tracking her. Pink strands matted her brow as she ran, sweat glistening on the pale skin of her lithe frame. Her body was shaking with a sudden fear that she couldn't control. How could she with the Kyuubi in possession of her friend. Of her Naruto.

Sakura pressed her back against the trunk of a bamboo tree, heart racing and cold dread filling her veins at the roar that now echoed in the night. So close. He was so close to catching her. Her mind chastised her for her slip of tongue. She should never had told him she loved him. Though she still loved Sasuke, she had feelings for Naruto, too. The blond goof ball had grown on her. And now she'd hurt him more deeply then any kunai knife ever could. Naruto was still recovering from the strain of the transformations he'd endured to fight in the battles he'd been placed in. And here she had added salt to the wounds by saying she still loved Sasuke. Gritting her teeth, she beat the back of her head against the bamboo trunk. Stupid, Sakura! You're so stupid!

The sounds of trees breaking broke her out of her thoughts, her mind and body screaming to move which she did. Charging blindly forward in hopes of finding better coverage. If she could buy time for master Yamato to recover, he could reign in the destructive chakra of the fox demon and calm Naruto down. If not, Sakura would be forced to do all she could to make him see reason.

XXXXXXXX

Kyuubi's glowing eyes searched the darkness of the forests, his nose sniffing the air for some trace of the girl's scent. His vessel was unconscious and perhaps that was for the best since he would not approve of what the fox demon was about to do. Not that Kyuubi cared. He was the one in control now, the one who had managed to bridge the gap between madness and control. His fur bristled and his teeth gnashed as he remembered the words of the girl when she had told the human boy she loved him but still yearned for the Uchiha brat. The one who had run away. The one who had even dared taunt Kyuubi himself by swatting his nose in the spiritual state inside his host's mind.

Unacceptable! Kyuubi would not stand for it! That damn traitor had turned his back on his pack, therefore the territory he abandoned belong to him! The girl was his to do as he pleased. He would make her forget all about that Uchiha whelp. Oh yes, by the time he was done with her, she'd be begging for more.

Catching a whiff of her scent, Kyuubi roared and raced towards her, eyes glowing with feral and lustful intensity as he spied his quarry up ahead and lunged forward, fangs flashing as the girl screamed and tripped, landing hard on the ground but flipped up and scrambled backwards. She studied the demon with a mixture of fear and concern.

A grin spread across the fox demon's muzzle as the girl withdrew a kunai knife and took a defensive posture. Oh, good! The little vixen wants to play! Grin widening, he growled in a low and dark voice, "Does this form intimidate you, girl? Perhaps you want something more.. appealing to look at?" Without prompting from her, the fur retracted, the red chakra dissipating, drawing inward until the form of Naruto stood in the demon's place.

Sakura's heart lurched at the sight of her friend and the hold on her kunai knife loosened a bit. Maybe she wouldn't have to fight him at all. "Naruto! You're back! Thank God!" She cried out hopefully, starting forward a bit only to stop as the blond's eyelids snapped open, reveling the red demon orbs of Kyuubi. Whiskers were still prominent on Uzumaki's face, his fangs visible as he moved towards her slowly.

"No my little vixen, Naruto isn't here right now. Even if he was, he couldn't stop me from what I'm going to do to you." The fox demon growled in Naruto's feral voice. He flexed and un flexed his clawed hands as he began to approach her.

The kunoichi was almost too terrified to move. She wasn't going to be able to bring Naruto back without a fight. And the Kyuubi was twisted enough to kill her just to spite his host. If I don't do something to knock him out, he might kill me then go after the others. I have to stop him somehow! Tightening her grip on the kunai, Sakura watched the beast stalk with catlike grace towards her and she again adopted a defensive position, her voice quaking with barely disguised anger. "N.. Naruto, you have to stop this right now! This isn't like you! That demon is just manipulating you!"

Kyuubi chuckled, voice dark as his red eyes watched her. "That's the pot calling the kettle black, girl! What have you been doing all this time? Manipulating my host's emotions, preying on his weakness for you. Giving him attention, showing him affection and suddenly when that traitor is found, you forget all about the kit and yearn for the dark haired whelp!" He blinked in surprise at how quickly the girl moved in and struck at him with her right hand. He caught her fist with his left hand, grinning as she struggled to get out of his grasp. "And as I told you before, Naruto isn't here right now. I'm the one who is going to deal with you. In my fashion."

"Damn you.. Let me go!" Sakura growled, using leverage to lift up and swing a side kick to the right side of the fox demon's face, only to clench her teeth as Kyuubi caught her by the ankle and slammed her into the ground, the kunai flying out of her hand and sticking into the base of a nearby bamboo trunk.

The kunoichi gasped and struggled as the demon pinned her down, his clawed hands dug into her wrists, cutting her, making her bleed. She bucked and growled and hissed. "You.. You monster. Get the hell off me before I kill you!"

Kyuubi chuckled as he pressed his body down onto hers, amused at her struggles. "You are a feisty one, vixen. It'll make taking you all the more pleasurable."

Understanding suddenly flashed across her features and she stammered in horror. "You.. You can't! I've.. Never.. I.. I won't let you!"

The demon laughed and took her left wrist and brought it up to his lips, licking at the blood there, cleaning the wound, even as the female bucked and renewed her efforts to break free. "My, but you are a she-devil.. So lovely.. So pure.. I will enjoy making you mine." He leaned down, his weight fully on the girl as he buried his nose in her hair and inhaled deeply then moved down to nuzzle along her neck before nipping her pulse point and sucking on the wound. "Mine. My territory."

Despite the situation, despite her horror and the desire to escape, she felt her face flush at the lustful tenor in his voice and the way his actions were making her body feel. All the schooling, all the training hadn't prepared her for this. Her friend. No. More than her friend. Her Naruto was going to force himself on her and she didn't have the strength to stop him. He could kill her in a second with his teeth or his chakra. What could she do? She had to fight and she would do it with her body and her words.

"Naruto listen to me.." she began, her voice shaky as she squirmed beneath him. Already she could feel the hard bulge of his manhood rubbing against the apex of her covered sex and it frightened her. Not only because it meant he was aroused and closer to taking her virginity but also because it made her body tingle and her insides quiver with arousal and desire. "Please.. Naruto.. You can't do this.. The others will recover soon. You.. You don't want to be caught doing..this.."

Kyuubi lifted his head to look down at the girl, his demon eyes full of lust and possessiveness as he lifted her arms, pinning them at the wrists with his left hand as he began to tug and removed the girl's clothes. He groaned at the sight of her skin and used his chakra to keep her bound and her power down. Kyuubi Naruto then began to touch and kiss and explore the girl's body with his mouth.

Sakura squirmed and struggled, panting and biting her lip to stop the moans that were forming in her throat at his actions as the demon explored her naked body and closed her eyes. It was so wrong. What was happening. It wasn't supposed to be like this. She had wanted to save herself for Sasuke. But what Naruto was doing to her felt so good, so new and exciting she couldn't help but cry out in pleasure when he reached that place no man had been before. Bucking up, she whimpered out a weak plea. "God.. You.. You have to stop.. Naruto.. You.. Don't want this."

Kyuubi chuckled as he continued to explore the most intimate parts of the girl until he had her quivering and mewling. "I do want to do this. Wanted to for so long. And you want it, too. Don't deny that you haven't wanted to feel a man's touch." He paused, caressing her thighs with his clawed hands. "My host.. His body.. Wants you, too. Needs you. Will have you as his. You're going to forget all about that Uchiha whelp, vixen. You'll find I can give you what he can't." He increased his ministrations until the girl snapped like a bow string, arching up and crying out, overcome by the rush of liquid heat inside her.

The fox demon watched with male pride as the girl writhed in pleasure. He shifted, removing his clothes then crushed his lips against hers, claiming her mouth as he claimed her body.

Sakura's eyes widened as she felt him fill her. Years of tough training as a ninja had caused the loss of her barrier and the actions by the kyuubi possessed Naruto had made it easier to enter and move. Still it was an alien sensation and she tried weakly again to resist. "No.. We.. Can't.. God.. We.. This.. Is wrong.." But her hips moved in time with his, meeting his thrusts. Her breath was as ragged as his and her legs twined around his hips, wanting more of him.

Kyuubi hissed and moaned in the girl's ear as he took her. "Yes.. Mine.. Now.." It felt incredible being inside the girl. The sensations of claiming her were nearly too much for him. He increased the pace, kissing her again and again, nipping her neck, marking her until he felt her go over, sending him with her until he saw spots in his vision. Spent, he collapsed onto her, out of breath. His body became a bit smaller as Kyuubi retreated back inside the form of Naruto. The whiskers faded to the point of faint lines and blue was visible between the fluttering eyelids of the jinchuriki. "Sakura.." He whispered.. And it was Naruto's voice that the girl heard.

The kunoichi studied the peaceful features of the blond shinobi and she reached out to touch his face then withdrew her hand. Slowly, she pushed him off, biting her lip. She doubted Naruto would even remember what happened. And she did love him. She couldn't turn him in for something her body longed for. And Kyuubi had been right. He had given her what Sasuke couldn't. Someone who desired her as a woman. And had no problem showing it. Quickly, she got dressed and helped the unconscious Naruto into his clothes, carrying him back to camp where she found Sai and Yamato recovering from the fox demon's attack.

Seeing the girl's wrists were bleeding, Yamato asked. "Everything alright, Sakura? Did the Kyuubi do that to you?"

"Yes, master Yamato. But it's alright now. Kyuubi retreated inside Naruto after he got what he wanted. And I.. Got what I wanted as well."

The ANBU ninja's brow furrowed. "And what was that, Sakura?"

But the girl merely shook her head, choosing to remain silent as she set to tucking Naruto in before heading to rest herself, too sore and tired to explain. Besides... Shinobi were trained in keeping secrets and this was one secret she would keep to herself. Unless of course.. Kyuubi came out to play again. Next time.. She'd be ready. And he'd be the one running from her.

Well, I hope I didn't mess up the Naruto Universe too badly. Thank you for reading!