Being with others just reinforces how alone I am.

Humans often had sex after a close encounter with death. It was a confirmation of life or something. Vampires, Sasuke supposed, did it for a similar reason. But not Sasuke. He did it to not think. To clear his mind of all thoughts. So Sasuke let his control slip and his thoughts faded away until all that was left was pure action. Now that he had fangs, Sasuke wanted to try something. But that didn't stop Sasuke's thoughts from turning to someone else as he explored Naruto's mouth with his tongue.

Sasuke grabbed Naruto, pinning his arms down by his sides. (Sasuke had his own tent as the captain and he was glad of the extra room. The others said nothing when Naruto moved his sleeping bag into Sasuke's tent. Sasuke thanked kami for that.) He took Naruto's chin, forcing it up so they could stare at each other. Dark thunder clouds and sunny blue skies. Then-

Naruto wanted them both to be naked. But Sasuke was in control, calling all the shots. He left his shirt on, saying he couldn't wait. Naruto didn't think anything of it.

Sasuke topped, explaining that if Naruto wanted to top he could go to Sakura.

Narutos' eyes clouded and for a heart-stopping moment Sasuke thought he might change his mind. But then that smile appeared and Sasuke's shivered.

Sasuke said next time they could switch (he was lying).

Naruto's heart leapt at the promise of another moment.

Sasuke was thrusting away when he mouthed a delectable spot on Naruto's neck, marveling at how smooth it was.

"Hey, Dobe," he said after a particularly hard thrust.

"Y-yeah?" Naruto wailed, pushing back against Sasuke so that they created the most delicious friction.

In Sasuke's silence there was a question. Are you sure?

Naruto tightened his internal muscles, squeezing Sasuke's cock in reassurance. I want to be yours, Sasuke. There's no one else in the world I trust like I do you. Mark me. Claim me. You're the only one that can.

And Sasuke's fangs lengthened and he lowered his head, piercing the skin.

Naruto let out a shrill scream and a then a gasp. Sasuke drank, loving the energy of Naruto's life source.

Naruto reached for Sasuke's hand. "It doesn't hurt. I thought it would hurt."

Sasuke finished drinking and let out a satisfied moan. "Because it was voluntary I guess."

"I love you."

Sasuke knew he was lying when he replied "I love you". But Naruto was already asleep.

Sasuke licked his fangs before willing them to shorten. He slid out of Naruto. He'd been careful not to take too much. He didn't need to drink. So why did he? He guessed it was the reason why people did drugs or cut themselves. Because he could. And he couldn't find a reason not to.

He hated himself for being weak. For taking advantage of Naruto. But he didn't care all that much. I did it, Itachi. You didn't think I could. But I did. He blushed as he recalled how he'd pretended Naruto was someone else. It was for you, Aniki. I wanted it to be you.