Hi Wick3d!
The rules aren't posted here yet, but basically any story, oneshot or drabble has to have See/Kag in it in some kind of relationship. They can be platonic, adversaries, romantic, etc..., but there must be some kind of relationship established between them in the fic.
Hope that helps!
Possessed
There is a sister fanfic site, feudalfairytale.com where all pairings are allowed. It is not running at full capacity yet, but Miss K is planning to work on it as soon as she gets things squared away here!