I've been entertaining an idea for some time now about a civilization known as the
Herikin - a race of beings who gain sustenance from something they call the ''
fay-byre'' (blood-fount in their language) which is essentially the blood of the planet they inhabit, coursing through the land in veins and channels to surface in vast, subterannean wells. Their architecture reflects their need for this, as they reside in vast 'temple-cities' that spiral down miles into the land, giant cylinders topped by heavily fortified domes at ground level.
Now, the
Herikin people can survive on the blood of mammals such as Humans and the other races with which they co-exist, but to do so for more than a very short period of time has a detrimental effect on their mental state. The longer they spend living this way, the more agressive and irrational they become as they absorb into themselves chemicals that can't exist in harmony within their anatomy.
In their history there have been civil-wars etc. due to such issues. But that's not for this thread - had to stop myself listing their entire bio! Anyway yeah, I think the romantic dracula/lestat-esque has been done to death. Originality!
...Unless... was that idea original? *wrestling with self-doubt now*
(PS. If this idea is original enough that it can be considered mine, please don't steal it - for while the thought of hunting you down and drawing blood pleases me immensely, I'm constantly trying to be pleasant
)