The fantasy genre always offers so many possibilities that would be worth to be played~ The first thing coming to my mind would be a human, a noble for example, concluding a pact with the devil and gets betrayed. Result, he/she's ending up in hell and begins plotting revenge or something along those lines.

If this sort of RP sparks your interest or if you're having some other settings in mind, pm me. I'm pretty much up for everything that's fantasy related~

Greetings,
Seira~