A/N: This is my first fanfiction, and, unbelievably, it's Sasuke/Karin. I don't even LIKE Sasuke. But for whatever reason (perhaps it's those rabid plot bunnies I've heard other writers talk about), this idea popped into my head. This contains MATURE CONTENT and is not intended for underage consumption. I do encourage comments, compliments, constructive criticism, etc.

Disclaimer: I do not own Naruto, nor do I profit from this story.

Finally alone, Sasuke thought as he sat down on the end of his bed with a sigh of relief.

He and the rest of his team had stopped to spend the night at one of Orochimaru's old bases, and Sasuke couldn't be more grateful for the compound's numerous bedrooms. With scores of rooms lining at least three hallways of the base, he was able to select sleeping quarters far, far away from the constantly-bickering Karin and Suigetsu and the unstable Juugo—sleeping quarters which afforded him not only the peace and quiet he desired, but also the privacy he needed to take care of a little business that had been bothering him for awhile now.

Sasuke was horny.

Not just a little horny … very horny. And since he had never been one to seek out casual sex partners (for several reasons, not the least of which was the arrogant little inner-Sasuke that told him that he shouldn't have to pursue women; they should come to him), he had few tension-relieving options open to him. In fact, he really only had one way of alleviating his problem.

And so it was that Sasuke found himself stripping off his shirt and running his fingers over the growing bulge in his pants. "Mmm," he moaned, his cock twitching at his touch. This is what I've been waiting for…

As he leaned back on one hand and continued stroking himself through his pants, he couldn't help thinking about how much better it would feel if it weren't his hands touching his hardening cock but the hands of a willing female. He imagined her sliding her fingers over the covered head of his penis and down the underside to grip his balls, and his hands mimicked the imaginary woman's. Groaning softly, he spread his legs a little wider and relaxed his knees a bit, allowing his erection to point perfectly upright beneath his stretched pants. He gripped his clothed shaft and began leisurely pumping his hand up and down.

Finally unable to stand the barrier anymore, he reached inside the restricting pants and pulled his cock out, pushing the waistband of his bottoms down just enough that his erection and balls were exposed to the cool air of his bedroom. Wasting no more time with foreplay, he wrapped his hand around his dick and started moving it faster and faster, brushing his ring and pinky fingers over his balls with every downward stroke and sliding the skin of his penis over its head with every upward tug.

His breathing grew ragged and beads of sweat started forming on his chest only to run down his rippling abs to pool in the coarse hair surrounding the base of his shaft. Grunting as he felt his balls tightening in anticipation of the orgasm he'd been dreaming about for so long, he threw his head back and raised his hips up off the end of the bed, forcing his cock to point toward the bedroom door and flicking drops of precum onto the floor between his legs. His hand continued to move furiously, aided by the moisture dripping from the tip of his erection, and he nearly growled when he felt the elusive orgasm begin to overtake him …

Karin walked quietly but quickly down the hall towards Sasuke's bedroom. She had no real reason to visit him this late at night, but she figured she'd come up with some excuse by the time she got to his door. As she neared the room, however, she sensed his chakra and realized with a jolt of concern that its levels were elevated almost to battle standards. Worried that something might be wrong with him, she pushed open his door without knocking.

"Sasuke! Are you al … right …" her voice trailed off as she took in the sight before her.

There was her beloved Sasuke, deep in the throes of self-induced passion, sitting on the end of his bed and facing her directly. To be more accurate, the head of his very erect cock was facing her; his head was tilted back, exposing his muscular neck for her viewing pleasure. Her eyes moved slowly down from his squared chin to his jutting collarbones to his taut abs and finally back to his rapidly moving right hand, her mouth going dry and her pussy growing wet.

It was at that moment that Sasuke seemed to sense her presence, and as his head lifted and his ruby-eyed gaze settled on her, she watched him flash a smirk that was almost a grimace—

And then he groaned and shut his eyes as ribbons of cum streamed from his cock and onto the floor just in front of where she stood. His erection jerked one, twice, three more times, spraying the last of his cum at her feet, and then he moved his hand away to join his other on the bed, supporting his weight as his breathing slowed down.

Sasuke opened his eyes languidly and fixed onto the woman who had interrupted him, noting her open mouth and accelerated heart rate. As his gaze drifted from her face to her chest, he was surprised to feel a shock of arousal run through his abdomen and down to his groin.

"Apparently I'm not yet satisfied," he said matter-of-factly.