Symbiosis

Written for Tainted Blossom Akatsuki-Saku kink-meme (http://community.livejournal.com/taintedblossom/). Check it out, cause there's already some very delicious kink on there.

SUMMARY: Sakura and Zetsu share an interesting relationship of mutual benifit.

WARNING: Very heavy blood-play, very heavy S&M, and Zetsu's cannibalistic tendencies...

A/N: Eh, not sure what came over me there...

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Symbiosis

Hungrily she sucked at his lower lip, almost devouring it in her haste as she dug her fingers into his naked back. Her tongue probed along the line where she knew his strange bisection into black and white ran, but she couldn’t taste a difference. He answered with an equally feral growl and dug his hands harder into her thighs that she had wrapped around him to support her weight on his up-right body. On the downward pull of gravity he thrust up into her, keeping his balance with remarkable ease.

She gasped, both because of the friction his cock created inside her and because his venus flytrap halves tightened around their naked bodies. He was in the exact center of the plant enhancements, but they weren’t big enough to cover her, too. The sharp spikes burrowed themselves deeper in her flesh, causing new rivulets of blood to run down her sides. Desperately she ground her hips against his, sighing as the movement called up a new wave of pain and pleasure as the spikes moved in her flesh.

It had taken a long time for her to come that far, that she was able to enjoy the sharp pain of his strange defense almost as much as the feeling of his cock viciously hitting her sweet spot. But he had taught her patiently, guiding her on how to endure pain, how to mix it with pleasure, and even on how pain could be pleasurable all on its own. He had pushed her limits beyond what she had ever thought possible, and now she just couldn’t get off properly anymore without it.

That was one reason that always drew her back to Zetsu, the way he knew exactly how to make use of all those responses he had so painstakingly trained into her. The other reason was the thrill of the forbidden and the danger, of being fucked by an S-class missing-nin who was completely insane.

She held no illusions to her role in his life. As long as she could hold his interest, she was safe from his darker half’s cannibalistic tendencies. But should she become boring or useless…

Well, that hadn’t happened so far. She had survived longer than any other of Zetsu’s other flings so far, which was mostly due to her expertise as a medic-nin. No matter what damage he inflicted on her during their violent make-out sessions, she could heal herself right afterwards. And she had noticed how hungrily he always watched her when she was exerting her healing energies.

She shuddered as she sucked on his tongue. Well, it wasn’t quite correct that she could heal any damage he was capable of inflicting on her. But so far, he had restrained himself from doing any permanent harm or letting her die of blood-loss. Then again, that was what made it so thrilling, that she never was quite certain whether she’d come out alive in the end.

Grinning sharply she bit down on his tongue, swallowing both the startled moan and the blood that gushed out. As a response, the fly-trap halves tightened even more around her and she struggled a bit to turn the initial blossom of pain into a rush of pleasure. He helped her along by freeing one of his hands supporting her hips, and he lightly traced her skin around a spike that had sunk deeply into her flesh between two of her ribs. The soft touch on her almost hyper-sensitive skin sent shudders of arousal through her, which she rode hard in order to turn her pain into more fuel for her pleasure.

Reflexively, she clenched her muscles around his cock and was rewarded by it jumping deep in her womb. She couldn’t quite suppress the high keen that erupted from her throat when he withdrew his tongue from her mouth and started licking her neck. His tongue hadn’t quite stopped bleeding yet, so she felt a thin stream of rapidly cooling liquid trail run down her body, mixing with the copious amounts of blood that leaked from her own wounds.

But that didn’t matter. Encased as they were in his venus fly-trap halves, every drop of fluid was absorbed by his peculiar defenses before it could hit the ground. They weren’t going to leave any traces of their presence in the small clearing half a day from Konoha.

She froze when she felt his sharp teeth digging into her jugular, animal reflexes ensuring that she didn’t accidentally rip open her throat. His puffs of air against her neck sounded harsh and rushed, signaling that he was getting closer to release. Between the spikes in her flesh, his arms supporting her thighs, and now his teeth at her throat, she was nearly incapable of movement. His increasingly hurried thrusts rocked her up and down as far as her gruesome restraints allowed, and it was all she could do to stay on the precarious edge of pain-enhanced pleasure.

Another high, keening sound erupted from her throat when he slowly, incredibly slowly started biting down, letting her feel the inexorable build of pressure. Her unfocused eyes rolled back in her head when he thrust harder and faster into her, gnawing hungrily at her breaking flesh. Between the teeth digging into her skin, she felt his tongue working overtime to lick up all the blood he was milking out of her, and she could hear him swallow against her.

Picking up his increased pace, she rolled her hips against his as far as she could with the spikes practically pinning her in place. After a while, she found an angle that allowed her to mash her clit against his pubic bone, and the resulting wave of pleasure shooting down into her toes and back up into her head nearly undid her. She ground against him almost frantically, knowing with her last bit of reason that the spikes in her flesh hurt incredibly, but she simply didn’t care anymore. She had slipped down the pain-pleasure edge far enough that it had become a self-sustaining cycle, interpreting her pain as pleasure without her conscious input. No matter what the stimulation, it only fueled the hunger and the need growing deep inside her.

His teeth in her throat tugged at her skin, letting her windpipe slip out from between them until they only clenched around a thick fold of skin. Then they bit down without mercy at the same time as he thrust into her especially viciously, and if she hadn’t been pinned in such an unconductive position, she would have screamed herself raw.

As it was, a hoarse shout erupted from her throat and he bit down again and thrust up again, and she could feel how her tissue gave way between his teeth. His fingers were digging into her ass cheeks hard enough to bruise her tailbone, and she tightened her legs that she had slung around his waist so much that on his next thrust he was trapped deep inside her. She clung to him with all her strength as his frontal teeth finally punched through the fold of skin directly above her jugular, increasing her need a hundred-fold. He growled deep in his throat and his flytrap contracted around her to the point of becoming nearly unbearable, and when the harsh undulations of her hips rubbed her clit against his pubic bone one last time, she finally exploded.

Her whole body jolted when she tugged against his teeth in her throat and the spikes in her sides as her orgasm demanded even more stimulation. All sensations went to feed the mind-blowing wave of pleasure rushing through her, and she didn’t care how much damage she did to herself with that.

When she finally came back far enough to feel the first signs of pain slipping through the incredible endorphin rush, she realized that he was still hard and still throbbing inside her, but he had frozen against her. He was panting hoarsely and trembling from need, but he hadn’t moved an inch after he had refused to follow her into orgasm. His fingers were still clenching her ass cheeks. His flytrap fangs were still burrowed in her flesh because they plugged her wounds to prevent uncontrolled amounts of blood-loss. Only his teeth had withdrawn from her throat, and she felt rivulets of warm blood running down her chest.

Somehow she found the strength to right her head and look at his face, and she involuntarily clenched her muscles around him when she saw how his golden eyes were glowing with lust, made even more striking by the harsh contrast in his face halves.

He flared his nose and shuddered slightly, which moved the spikes in her side and sent a true wave of pain through her. Now that she was coming down from her endorphin high, there was nothing left to block the full amount of pain.

She exhaled slowly, mouth gaping open soundlessly as she tried to stay on top of the wave and ride out the red bursts of agony. When she had composed herself halfway, his blood-stained teeth smirked viciously at her, his eyes smoldering with arousal.

“You taste very, very good,” his darker half growled, and then he actually started chewing on something in his mouth. The lighter half merely smirked at her.

She frowned, using most of her concentration to beat back the pain that was becoming more and more obvious by the second. Unclenching her right hand from where she had dug it into his back, she carefully felt at her throat, and indeed, a small chunk of flesh was missing. Glaring at the man, she immediately healed the wound, not missing how he inhaled sharply from her sudden chakra flare. As fresh as the injury was, she could regenerate most of the tissue he had torn out, but she wasn’t very happy about it.

“Haven’t you said you weren’t going to eat me until after you tired of me?” she asked grumpily when she had finished taking care of her throat. Without a mirror she couldn’t be sure, but she’d bet that her injury would be invisible except for a small, pink indentation in the otherwise smooth column of her neck.

He merely laughed at her in his strange dual voice, eyes still dilated wildly, and he slowly pulled back his venus flytrap. She was assaulted by too much pain to do anything but hold her breath and go utterly rigid, healing her sides as fast as she could to close the wounds the spikes had left behind. Yes, it was good that he had not only taught her how to mix pain with pleasure but also how to endure pain on its own. Otherwise, she never would have been able to go about healing herself after a rough encounter like this.

Once she was done with her most serious wounds, she devoted her attention to him. They had a strangely symbiotic relationship – she craved the pain and the death he impersonated, and he got off on the healing and the life she had to offer. That was another reason why she dared to come back to him time and again, because the risk was calculable. She knew that he wouldn’t get rid of her until he found someone else to give him what he needed. And medics of her skill-level were very, very rare.

Slowly extending her healing chakra, she let it sweep over his back in a thin layer and let it seep into the deep furrows her fingernails had dug into his skin where she had clung to him. His eyes almost slid shut, and he groaned and grew even harder inside her when her chakra pushed into him. She relaxed her legs enough that he could resume his thrusting, but throughout it all, his glowing eyes remained fixated on hers. Then she sent a tendril of healing to his tongue that she had bitten earlier, and he couldn’t keep from moaning deeply as her energy tingled across his very, very sensitive flesh.

Smirking at the fact that she also had some power over him, she didn’t cut off her chakra flow once she was done. Instead she trailed her fingers lower and lower down his spine until she could jolt energy straight into the wonder gate at the base of his spine. The seventh gate was linked deeply to all baser urges, and as aroused and as hard as he already was, it took only a last push for him to go completely rigid and spray his seed inside her. He ground her hard into her to reach as deep as possible, and he groaned low in his dual voice when she deliberately clenched and unclenched her muscles to milk him dry.

While he was still shuddering through his orgasm, she used the time to heal herself the rest of the way, moving her healing chakra from her hands on his back first through him and then into her. It took much more concentration than if she had simply held her hand straight above her wound, but for a medic-nin of her caliber, it wasn’t an impossible feat. And, not to forget, he really got off on the feel of healing chakra flowing through his body. After all, she didn’t want him to decide somewhere down the line that all she was good for was food for his cannibalistic urges. Not that he hadn’t already taken a bite out of her, but she was quite sure that he wasn’t ready yet to go through with his threat.

With a low grunt he dropped to his knees when his legs refused to support both of them anymore. She clung to him during the unexpected change in position, coming to rest on his lap as he rode out his last tremors.

He swallowed and then smirked at her. His teeth were mostly clean by now, only some blood residue in between, but she didn’t really want to think of just what he had swallowed there at the end. So instead of leaning down and kissing him, she answered with a grin of her own and got up. The amusement in his eyes was clearly visible, but he didn’t do anything to stop her. When his spent dick slipped out of her, their last connection was dissolved.

With a groan she stretched unselfconsciously despite her nudity, testing how good of a healing job she had done. Except for a slight tenderness around her ribcage and throat everything was in working order, and she walked over to the edge of the clearing to get her clothes, feeling incredibly light from her mind-blowing orgasm earlier and the sudden absence of pain.

She didn’t bother to look back because she knew that he had disappeared as soon as she had turned around, sinking into the ground as silently as he had appeared from it a few hours ago. But she also knew that when her itch got too strong in two, three months, he’d answer with a time and a location when she sent him a message.

Smiling slightly she picked up her clothes and walked off towards the river to rid herself of the last traces of their encounter. Ino’s questions about where she had been were going to be annoying enough without giving her any more fuel for her imagination.

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A/N: How did you like it? This is my first attempt at porn after taking a 3-year-hiatus from writing anything NC-17-worthy. I stopped for that long because I felt that I was too naive to produce anything sufficiently mature and steamy, and that my writing skills weren't up to it. I hope I have improved on those bits, because my pr0n-bunnies are calling...