AN: Goddess Bubbles left a review on the last story here mentioning they would like one of these from Kili's point of view. I hadn't even realized they were all from Fili's. Perhaps compensating for all of my longer stories which tend to be Kili centric. Sadly this is another Fili POV. But I will have to think about doing one from Kili's POV soon! This was for the Winter FRE 2017 Prompt 120. Vampire AU

Cursed

Kíli didn't understand.

He told Fíli he was beautiful, but the brunet saw only the exterior. He didn't hear the blond's thoughts, didn't see the monster lurking just beneath his skin. The creature that thought of little more than its thirst for blood and who it might take as its next victim. Kíli wanted Fíli to turn him, to make him immortal, the same. But Fíli refused. He couldn't do it. He couldn't take that risk. That Kíli might lose himself to the bloodlust, might grow to hate him for 'gifting' him with eternal damnation. There was a great darkness within. Fíli fought against it night and day. Without Kíli at his side he never would have managed it. The brunet kept him sane, pulled him back whenever he fell a little further. His brother was too pure for such things, and Fíli feared it would overtake him, put out that beautiful light that so often lit up his eyes.

In the end his resistance proved worthless. It took but a glimpse of a single mark to change his mind. A tiny wrinkle, just between his brother's heavy brows. It was a sign of age. A sign of what was yet to come. It was a silly thought really. Kíli was still young, barely on the cusp of adulthood, but one day Kíli would grow old, one day he would die. And Fíli would be left with little more than a memory of the one he loved so dearly. He couldn't bear the thought. He wanted Kíli at his side forever, his warm body beneath his hands for the rest of time, and so he acted, finally giving in to his brother's pleas.

His fangs sunk into tender skin, and he tasted the irresistible sweetness of Kíli's blood as it flooded his mouth, dripping over the brunet's shoulder. The change was painful, and he could feel Kíli's struggles in every possible way. He screamed, begged for it to go away, his heart pounded at a frightening pace, and his skin trembled beneath the blond's fingertips as his soul was overtaken by the curse. The curse they now shared.

Kíli's skin paled, his eyes darkening as his soul left his body. He was cold to the touch, and the blood dripping from his skin changed, looked strange, infected, now belonging to something that wasn't truly alive. His face was frozen in a mask of pain, teeth elongated and waiting to sink into their first meal. Fíli felt regret overtake him, and for a moment he nearly let the sorrow consume what remained of his humanity. He had destroyed his brother, selfishly taken what he wanted and in turn afflicted the one he loved to serve a thousand lifetimes of depravity.

Kíli would never forgive him. How could he?

But there was a whimper, and it drew Fíli's eyes towards the brunet's face. Kíli's nostrils flared, and he ran his tongue over the two pointed teeth now fully formed within his mouth. There was a shudder, and a gasp of air, before his lips moved in a familiar way.

"Fíli," he whispered, voice slightly slurred. Fíli's eyes widened, and he stared into the dark orbs before him, searching for that glimpse of his brother he remembered so well. It was there, just beneath the surface, fighting for control, and Fíli pulled him close, dragging clawed fingers through his hair. He would get Kíli through this, keep him grounded as the other had done for him so many times before. Perhaps together, they could fight the looming darkness for a little while longer.