I have a mage who uses Time and Space magic. I was thinking it could be interesting to have a line about parallel universes and someone important to him crossing over from another timeline, and them dealing with how different the choices each other's parallel universe self made were. Perhaps one worked hard to build a life with the other in his original timeline, but finds out his alternate self went the other way. This would be an urban fantasy line with as much adventure and drama as romance.
Also interested in vampire versus shapeshifter lines à la Anita Blake, where a master vampire can have an animal to call. Or a mage and his familiar.
I prefer slash or gen, but can write het for the right type of character. I'll only write through journals or GDocs.